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139.99
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285.3
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216.59
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88.59
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199.99
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209.99
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359.99
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159.99
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139.99
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39
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Location: Temecula,CA,USA
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99.99
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189.34
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39
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99.08
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448.8
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161.49
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600.39
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87.26
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89.87
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89.87
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96.38
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364.8
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94.99
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99.08
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180.36
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357.06
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289.91
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161.36
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831
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620.4
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285.99
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GoldFasion 1. NAME:GPS DISCIPLINED CLOCK POWER: DC11.7-12.9V、 15W GPS ANT POWER:DC3.3V. 1PPS OUTPUT:SQUARE WAVE.3.3Vpp. 10M OUTPUT:SINE WAVE.1Vrms( 13dBm+-2dB) ... moreRS232 OUTPUT:GPS NMEA SIGNAL. ACCURACY:above than OCXO 2 order of magnitude SIZE:W*H*D=107*55*122mm(INCLUDE BNC CONNECT) ACCESSORY:AC110-220-DC12V ADAPTER.GPS ANT. 2. 10MHz Distribution amplifier.10MHz OCXO frequency standard,8 port output POWER:DC11.7-12.9V.MAX:18W. INPUT:10M.0.1Vpp-5Vpp. OUTPUT:8 PORT 1vrms(13dBm) LED:PWR:POWER. EXT 10M:extern 10M input. ERROR:not output(inside OCXO error) Accessory:AC110-220V-DC12V/1.5A. SIZE:W*H*L=100*55*120(include BNC connect) Weight:600g(net weight)800g(include adapter,package) We only accept Paypal in Ebay. If you want to pay via other method please contact us. Import duties. Taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to biding Item will be shipped within 24 hours on payment received from Hong Kong using Airmail. Delivery time depends on destination and other factors. It may takes up to 30 business days. Optionally. Express Shipments with tracking service via EMS/DHL/UPS with a quoted delivery time of 5 to 7 business days is also available Here is the estimated time for your reference only: The delivery time may vary due to public holidays. Countries, and customs etc. Thanks for your understanding, You feedback is very important to us. Please let us know before leaving any negative feedback or open any disputes on Paypal, please give me an opportunity to resolve any problems and we will try our best to satisfy your requirement. If the item is defective. Please let me know as soon as possible after receive the items. The item will be returned its original condition, in order to get it refunded and replaced(please inquire us the returning address before you ship it back. Buyer is responsible for shipping costs when shipping
$
85
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281.86
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289.91
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99.08
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290
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99.08
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175.04
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290
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199.99
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113.99
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161.36
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179.87
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364.8
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$
831
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Location: Winter Garden,FL,USA
$
179.87
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281.86
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281.86
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159.99
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364.8
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89.87
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89.87
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364.8
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Used FEI PICOSYNC GPS Time& Frequency Engine with power cord,10MHz precision ocxo morion MV200 built-in. IN GOOD CONDITION. WE WILL TEST ALL BEFORE DELIVERY. It takes about 15-20 bussiness days to ship to worldwide. If you want.I will ship the item by DHL or UPS. But you should pay more for the payment of shipment and tell me which shipment you choose. Shipping Terms We ship to the confirmed address provided by PayPal. Before you pay. Please make sure your address in PayPal matches the address you would like us to ship to. Payment Terms All Paypal Payments must be Confirmed( Shipping and billing addresses must match)
Datum 9390-52054 GPS Disciplined 10MHz Atomic Clock Time Receiver IRIG-B 1PPS Outputs: IRIG-B• 1PPS• 10MHz• Includes Power Supply& Indoor GPS Antenna Locks onto GPS Time and Outputs IRIG-B For Clocks/Displays FAST Shipping- Ships same/next day Description This is a GPS Master Clock receiver that obtains the correct time(and location) from the GPS Satellite constellation and outputs accurate frequencies and timecode. Note that the firmware is from a previous GPS epoch so the day number is likely to be incorrect. It may be possible to install updated firmware code. Or to correct this via some configuration arrangement, but this is not guaranteed. The listing comprises the receiver. Antenna and power supply so you should be good to receive atomic time within a few minutes of opening the box provided that the antenna has a full view of the ... moresky. A included basic antenna and adapter are included to get you started. For a permanent installation an is highly recommended and I have some related hardware. The antenna supply voltage is 5V. For your peace of mind. I will offer bidders a guarantee that this item will arrive in the working condition described in the listing- provided that you notify me of any issues within 48 hours of receipt and that the cover has not been removed. No other warranty, express or implied, is offered. Fuller details are available in the Product Manual Test Results The receiver locks onto a GPS signal when the antenna has a good view of the sky. The status indicators then all illuminate- indicating that time has been successfully acquired with no problems detected. The location's Latitude. Longitude and Elevation are also obtained. I will guarantee that this unit will achieve time lock for you as indicated by the front panel LEDs(note that it may take a couple of hours for this to occur) Manufacturer's Description The GPS TC/FG operates on the civilian L-band(1575.42MHz) utilizing the C/A(Coarse Acquiistion) code transmissions to monitor time and frequency data from the NAVSTAR sat
This machine was used. It came from CDMA base station, There are some scratches and minor dents on the shell. When connect it to the DC power supply.The power LED will keep light,and other LED will flash once,after a while,when the OCXO touch warm,we can get stable 10MHZ signal and 1pps from the connection port. I have no such GPS antenna and software.So I can not test it fully. I sold it as is. no returns.No exchanges. It takes about 15-20 bussiness days to ship to worldwide. If you want.I will ship the item by DHL or UPS or FedEX. But you should pay more for the payment of shipment and tell me which shipment you choose. Shipping Terms We ship to the confirmed address provided by PayPal. Before you pay. Please make sure your address in PayPal matches the address you would like us to ship to. Payment Terms All Paypal Payments must be Confirmed( ... moreShipping and billing addresses must match)
Datum-Efratom Rubidium Oscillator and Timing Unit. This is a rare production item. It is a rubidium oscillator that has the GPS receiver built-in providing for constant synchronization to GPS satellites. Unit has 10 MHz sine-wave and 1PPS outputs. The 1PPS is synchronized to GPS and is adjustable through software. The rubidium oscillator is an Efratom FRS-C- it has less than 50 hours running time. All electrical connections are on the front panel. The GPS antenna connector is a TNC female and feeds 5 volts DC to the GPS antenna. 10 MHz RF is SMA female. The GPS receiver inside the GPS-RB is a Motorola UT+. Unit requires 24 VDC at 3 amps at start-up and 1.5 amp for operation after warm-up(power supply not included) Heat sinks are provided on all sides except bottom cover. Unit comes with a CD with operation/service manual and software that ... morehas been tested to run under windows XP. RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk.rp*73c7e%3D%3E-13f98f4237f-0xec-
Up for auction is a Trimble Thunderbolt Starter Kit. Complete specs. Data sheets, and manuals can be found online. The product description printed on the box is shown clearly in the photo above. The auction includes all of the items shown in the photos. And only those items. The items photographed are the exact items you will receive. Trimble Thunderbolt. Part number 48050-61. Like New. GPS Antenna. Part number 41556-00. Used. Trimble antenna cable. Part number 60433. Used. Condition: The main component. The Thunderbolt box is in like-new condition and appears to have never been used. The plugs and connectors show no signs of use, the labels are in perfect condition, and the casing shows no signs of wear or use. The antenna has obviously been used and displays some minor scuff marks as seen in the picture above. The threading and cable connection ... moreplug are in excellent condition. The cable itself appears to be used as is evident from some tape residue and minor kinks and twists. The connectors are in excellent condition. I guarantee this unit to be functional. Although some of the original parts and accessories are missing. I also guarantee that the items you receive are in the condition described and photographed, and that the items you receive are the exact same items shown in the photos. I am not an expert in the operation of these units. But will do my best to answer any questions you may have. Please do not hesitate to request more photos as necessary for determining a bid value. The shipping fee includes tracking and insurance through the United States Postal Service. Shipping is to USA addresses only. The winning bidder may pick up this item in person at our office in Raton. New Mexico.
Trimble GPS Disciplined Clock P/N: 48050-61 D/C: 0234 S/N: 12309956 General L1 frequency. CA/code(SPS) 8-channel continuous tracking receiver Update rate: 1 Hz PPS accuracy: UTC 20 nanoseconds(one sigma) 10 MHz accuracy: 1.16 x 10-12(one day average) 10 MHz stability: See graph below Power: DC 24v Used Working We ship FAST& via DHL worldwide This item comes with a 30 day warranty!
Datum 9390-52016 OCXO 10MHz GPS Atomic Clock Time Receiver IRIG-B 1PPS Outputs: IRIG-B• 1PPS• 10MHz• Includes Power Supply& Indoor GPS Antenna Locks onto GPS Time and Outputs IRIG-B For Clocks/Displays FAST Shipping- Ships same/next day Description This is a GPS Master Clock receiver that obtains the correct time(and location) from the GPS Satellite constellation and outputs accurate frequencies and timecode. Note that the firmware is from a previous GPS epoch so the day number is likely to be incorrect. It may be possible to install updated firmware code. Or to correct this via some configuration arrangement, but this is not guaranteed. The listing comprises the receiver. Antenna and power supply so you should be good to receive atomic time within a few minutes of opening the box provided that the antenna has a full view of the sky. ... moreInterior views are posted at the end of the listing so you can see which options are installed. A included basic antenna and adapter are included to get you started. For a permanent installation an is highly recommended and I have some related hardware. The antenna supply voltage is 5V. For your peace of mind. I will offer buyers a guarantee that this item will arrive in the working condition described in the listing- provided that you notify me of any issues within 48 hours of receipt and that the cover has not been removed. No other warranty, express or implied, is offered. Fuller details are available in the Product Manual(a close match to the model for sale) Test Results The receiver locks onto a GPS signal when the antenna has a good view of the sky. The status indicators then all illuminate- indicating that time has been successfully acquired with no problems detected. The location's Latitude. Longitude and Elevation are also obtained. I will guarantee that this unit will achieve time lock for you as indicated by the front panel LEDs(note that it may take a couple of hours for this to occur) Powered by The free listing tool. List your items fast and easy and manag
Symmetricom/Kinemetrics/TrueTime/Datum GPS-DC LCD Atomic Clock Receiver 1PPS. 10K PPS& RS-232 Outputs Locks to GPS and Outputs Timecode FAST Shipping- Ships same/next day Description This is a GPS Synchronized Clock with a variety of time and waveform outputs. An indoor 12V antenna is also included to assist you with your testing. The internal Lithium battery has recently been replaced. The following test results were obtained. The unit powered up fine with 115V AC power and the display started counting up from 00:00. DC Power input was not tested. The Antenna bias voltage was measured at 12V DC nominal. The commands can be entered manually using the usual key sequence of FUNC 00. Then UP/DOWN etc The receiver locks on to at least three satellites(when the antenna has a good view of the sky) and shows the correct time on both the LCD ... moredisplays. The UNLOCK flag clears when accurate time is received. The unit correctly identifies its latitude and longitude. The smaller LCD display is backlit. The larger one is not illuminated. Time also appears on the IRIG-B output. And this can be decoded using an external display. Other outputs and functions have not been tested. You need a 12V powered GPS antenna to use with this unit. If you decide to replace the one that I'm supplying please note that most GPS antennas that are sold today are for 5V power and may be damaged if connected to this unit. A new basic 12V indoor antenna is included to get you started. For a permanent installation an external 12V antenna with a full view of the sky is hightly recommended and I have some related hardware also listed on eBay. The supplied test antenna will obtain time from the GPS constellation but the unit may not achieve lock. Or at least not quickly, until a proper antenna is attached. T he lithium battery to maintain the time under power loss conditions was recently replaced. But its longevity is not guaranteed. Replacements are about $7. Rack ears are not included. There is no backlight on the large LCD display. If the unit
TRIMBLE THUNDERBOLT GPS DISCIPLINED OSCILLATOR FW 3.00 10MHz 1PPS You are bidding on a Trimble Navigation Thunderbolt GPS disciplined oscillator which provides precision 10MHz and 1PPS timing. This unit is used. Working, pulled from a working system and recently tested. As shown in the internal photo, it is loaded with ROM/FW version 3.00. The unit will ship as shown with DC power leads. Buyer must provide their own power supply, GPS antenna and serial computer/terminal for configuration. Power supply voltages required are DC +12V, 12V and +5V. There are many articles online about using these for hobby/laboratory purposes. Do your own searching. This unit is for expert buyers only. The seller offers no warranty or exchange of any kind. Sold As-Is. Terms: Read carefully. Placing a bid on this item represents your acceptance of these terms. ... morePlease visit for more details. CONTINENTAL US SHIPPING ONLY- NO EXPORT-No local pickups Payment: I accept PayPal only. Bottom line: I can't ship it if you don't pay for it. I will follow eBay's procedures for handling non paying bidders. Warranties: Due to the complicated nature of electronic equipment and my inability to control the level of expertise of the end buyer. I must sell this item As-Is with no warranty or post sale support of any kind, no refunds, no right of return. I consider all items I sell to be liquidations. Please make sure you bid accordingly and make sure you read my carefully before bidding. Shipping Info: Item ships via the carrier and service level specified in the auction only. I accept no responsibility for items lost or damaged in transit. Please report any damage to the carrier and save all packing materials. Items are insured for the value of auction. Items usually ship within one week of receipt of payment. After the Auction: When your shipping label is created. UPS sends an email automatically to the buyer's PayPal email address of record containing the item tracking number. It is the buyer's responsibility to make sure that the
Brandywine GPS-8 GPS Synchronized Master Clock& Frequency Generator Used. Great Condition Free Shipping to the 48 States• Guaranteed to Arrive Working for US Buyers FAST Shipping- Ships same/next day! Photos show the actual item for sale Description A used Brandywine GPS8 satellite time receiver and disciplined oscillator. In very good condition and supplied with a new external pole mount antenna and cable. This unit offers an impressive range of time and frequency outputs as well as configurable alarms for loss of sync etc. I assume that this is the TCXO version of the product. A basic antenna is included to get you started and to allow you to test the unit straight out of the box. For a permanent installation an external antenna is highly recommended(and I have some related hardware also listed on eBay) The antenna voltage is 5V. For ... moreoptimum compatibility I recommend using an. Which in my testing was able to achieve lock in a few minutes with a full view of the sky. The included antenna does achieve lock, but it does need to be positioned outside with a full view of the sky. Full details may be obtained from the User Manual. The responses from the unit on the serial admin port to the various basic status requests are shown below. REQUEST RESPONSE a Version number. Time, position averager, and output status information $PRCCG.A,028,17:44:39,20/03/14,8,4,1,0000,00*27 b x Sounder control. Where x = 0, 1, or 2 c 1 st pulse output(local/UTC) time or pulse period. Polarity, and pulse length $PRCCG.C,U000000,+100*65 e Modulated time code. Pulsed output, TxD1 format, and TxD2 format $PRCCG.E,5,2,2,3*2A f Frequency and phase controller data $PRCCG.F,150,33,+0,5353,+3.0E-14,1.80E-10,079:17:44:48,+11.6,02,08,09*07 h Health status of satellites $PFEC.GPanc,140320174422,22222122222222222222222122222122*46 j Leap second date and UTC-GPS seconds offset value $PRCCG.J,120701000000,00,16*0D l Location and signal strength of satellites(up to three records) $GPGSV.3,3,09,32,27,313,00*45 $GPGSV.3,1,09,01,13,311,00,
Lucent RFTG GPS Disciplined Frequency Standard(GPSDO) HAM This is the frequency disciplining section of a Lucent RFTG frequency standard. It's the second(and last) of these units that I have available. The RFTG consists of both an ovenized crystal oscillator(OXCO) which is disciplined by a GPS receiver and associated circuitry. And a separate rubidium oscillator, which is also disciplined by control from the OXCO. The system is redundant, and both the OXCO and the rubidium oscillator sections are capable of being operated independently. From the exterior they both look alike, but only the OXCO has independent GPS capability. I prefer the OXCO as a standard over the rubidium unit for two reasons: 1) The stand-alone rubidium unit must be periodically calibrated. The OXCO is self-calibrating by locking to the cesium beam standards of the ... moreGPS system. 2) The rubidium unit will eventually"wear out" due to gradual failure of the excitation lamp. The OXCO will last indefinitely. Even if left on continuously- which is the preferred mode of operation. This standard has been fitted with its own indicator and power supply. And is extremely simple to use. There are no switches or controls, just a red/green LED to show GPS lock status and a 10 MHz output port on the front. An antenna connection and a power input are on the rear. There is no on/off switch, as the unit is intended to operate continuously for maximum accuracy. The GPS receiver is shown at the top in the fourth photo, attached to the removable bottom of the standard. This receiver and antenna connection are not present in the rubidium version. The output impedance is a standard 50 ohms. With just over 4 volts of clean sine wave output into an open circuit as shown in the second photo. The output is a bit less when terminated in its 50 ohm characteristic impedance. A new power supply and"starter" antenna are included. However, the receiver should have a standard mast-mounted antenna for best operation. They are available at modest cost here
Datum Symmetricom 9390-6000 ExacTime GPS Time Receiver with TCXO 10MHz Oscillator Includes GPS Test Antenna• Outputs: IRIG-B• 1PPS• 1MHz• 10MHz• Additional Outputs Option Card Installed Locks onto GPS Time and Outputs IRIG-B For Clocks/Displays FAST Shipping- Ships same/next day Photos show the actual item for sale Description The ExacTime 6000 is a 1.75" rack mount chassis that is configured to meet or exceed the demands of many applications. Including test and measurement, metrology, range instrumentation and telecommunications. Full details may be obtained from the User Manual(but use the photos to check that the options you need are installed on this unit) The firmware is a late revision so the day number is in the correct GPS epoch and corresponds to the right calendar day number. The included antenna is intended to get you started ... moreand to allow you to check out the unit the day it arrives. The test antenna needs a complete view of the sky to achieve lock so you may need to move the whole ensemble outside to test as the antenna cable is only 55" approx. A weatherproof external antenna with a full view of the sky is highly recommended for a permanent installation and for achieving the highest level of time accuracy as the unit will need to track 8+ satellites to achieve this- and I usually have some listed that would be ideal. Alternatively you can choose your own antenna as any 5V L1 antenna should work well. I do have some antenna pole mounting skirts available which may solve the problem of how to mount a conical outdoor antenna in a robust weatherproof fashion. For your peace of mind. I will offer buyers a guarantee that this item will arrive in the working condition described in the listing- provided that you notify me of any issues within 48 hours of receipt and that the cover has not been removed. No other warranty, express or implied, is offered. The extreme flexibility of this instrument allows configurations including time codes. Low phase noise frequencies, pulse rates, parallel time and
This is a GPS disciplined rubidium oscillator made by Datum/Efratom Company. It operates from 24 volts DC and has a 10 MHz. sine wave output that is constantly corrected by GPS. The rubidium is a LPRO-101. This unit has had very little use so there should be many hours operation left on the rubidium oscillator. Clean unit. No scratches! Contains a heat sink all the way around the unit. Measures 11 inches W X 7 inched D X 3 inches H. Weight: 6 LB. Comes with a copy the Lucent RFTG instruction manual on a CD. NOTE: For international shipment using eBay's Global Shipping Method- I am not responsible if the company handling this item ships it to the wrong location. This happened to me once before and I can not be responsible for it once I ship it to them.
Spectracom 8183 Netclock GPS Satellite Atomic Clock Receiver 10MHz IRIG-B 1PPS Includes Antenna and 120V Power Supply Great Condition• Guaranteed to Arrive Fully Working FAST Shipping- Ships same/next day Photos show the actual item for sale Description The Spectracom NetClock/GPS Master Clock is a precise. Traceable time provider. The NetClock/GPS receives and recovers time information from the Global Positioning System(GPS) constellation of satellites. The GPS constellation consists of 24 satellites placed in 6 orbital planes spaced equally around the equator and inclined at a 55-degree angle. This design assures reliable worldwide coverage 24 hours a day. Each satellite contains a redundant system of highly accurate and stable atomic clock sources. The satellite’s timing, orbital position and other system parameters are monitored and controlled ... moreby ground stations maintained by the US Department of Defense and US Naval Observatory. The NetClock/GPS Master Clock provides timing outputs accurate to within 100 microseconds of UTC. Standard Master Clock outputs include RS-232. RS-485, IRIG B/E and a one pulse per second. The NetClock/GPS is ideally suited as a Master Clock in all applications requiring an accurate and traceable time source. Typical applications include computer network timing, utility billing, financial transactions, public safety and transportation. The clock comes with everything you need to receive accurate time from the GPS system. I am including a mag-mount antenna. And a power supply to get you started. A copy of the manual is not included, however this may be downloaded if needed. I placed the antenna and receiver outdoors(so that the antenna would have a full view of the sky) achieved time sync within a few minutes. I also tested with a professional grade outdoor antenna- the results of those tests are shown in the log files reproduced at the end of the listing. The basic indoor antenna is included to allow you to test it straight out of the box. But for a permanent installation an ou
Used but in a mint condition. Quartzlock GPS disciplined RUBIDIUM Time and Frequency Standard, Pulled out of working environment. It comes with a manual. Please see the pictures for details. Unlike most low cost GPS receivers the Quartzlock model A8 series Frequency Standard Receivers are able to perform extremely high resolution carrier phase measurements for each satellite being tracked. This yields a frequency resolution which is better than“code-only” detection by a factor of 10. 000. By performing carrier smoothed high resolution code evaluation the model A8 is able to make range(or time) measurements of far superior precision to non-carrier. Code only detection receivers. This enables the model A8 to detect almost instantaneously any local oscillator frequency excursions and makes fast corrections such that. Even with a low cost crystal, ... morethe short term stability is well controlled. The model A8 is therefore unique in its price range and yields performance equal to that of less affordable multi-channel receivers. All satellites in view are tracked and fast time frequency averaging is performed which minimises errors due to any single satellite. All satellites URAs(User Range Accuracies) are taken into account in the course of the averaging process. Further. Significant errors can be eleiminated from the averaging process by the use of special plausibility checks and the ability of the receiver to assume that it is stationary with respect to the earth having fixed its position to an accuracy of better than ±2m(which it may do automatically given sufficient time. Ie: minimise the effects of constellation changes.
Timple Thunderbolt E GPS Disciplined Clock Model:60333-30 Serial:58979639 Includes: Comes as pictured. No additional accessories included. Condition: Item is in good overall used condition. Functional Notes: Item pulled from working service. Unit has been tested to power on. We lack the setup to fully test this piece. However, we are selling guaranteed functional. Please ask all questions prior to bidding. All sales final unless otherwise noted. International Bidders If you are an international bidder and would like to bid on this item. Please contact us via email to request access to bid on this auction. Payment& Shipping You will receive a winning bidder notification to the e-mail address associated with your eBay account. If you have not received such an email. Please contact us to remit an invoice to you. All items paid with Paypal ... moreMUST ship to the Paypal confirmed address. Unfortunately there are no exceptions to this rule. Your item will be shipped within 24 hours of completed payment excluding purchases made on Friday. Purchases made. Or items paid on Friday or a day before a holiday will be shipped the following business day. Tracking information will be emailed to your address on file. You can also track your package by checking the order details on the associated eBay account. Acceptable payment methods are Paypal. 8.00% California Sales Tax applies to all items that are shipped to California addresses and that are picked up from our location. Local Pickup: We offer local pickup free of charge on most items. Local pickup must be done by appointment only. Please contact us to arrange local pickup. Return Policy: We accept returns ONLY if the item was not as described in the auction. Buyer must request to return the item within 14 days of receiving it. Customer Guarantee At Pro-Trasactions. We stand behind all of the products that we sell. You can be assured that if your item, for whatever reason, does not arrive as described in your listing, we will work diligently to ensure your utmost satisfactio
Raltron SY-GSC10 GPS disciplined OCXO frequency and time reference This was pulled from a product that never got off the ground. It was used as the reference for a wireless base station. I could only find Japanese looking datasheet when I Googled the part number. The only thing I verified was that 10 MHz came out of the OCXO when power was applied. It is probably 0.01 ppm over temperature.
TrueTime/Symmetricom XL-AK GPS Disciplined Oscillator(GPSDO) This is the TrueTime aka Symmetricom model XL-AK 600-101-1 receiver and GPS disciplined frequency& time standard. The instrument contains the optional 86-690 Output Configuration“L” Board which allows the user to select the analog or digital signals that will appear at five rear panel BNCs labeled J1 through J5. Signal selection is made by the installation of jumpers. Outputs include 10 MHz and 1 PPS signals. Analog output formats are: IRIG B AM IRIG B amplitude modulated. Analog signal amplitude is 1 V rms into 50 ohms. Digital output formats are: IRIG B 001. IRIG H 001, and IRIG E 001- These are the DC Shift formats of IRIG B, H, and E time code. ALARM- This output level is asserted by various programmable alarm conditions such as timing error during loss of lock or antenna ... moreshorts. A Programmable Pulse Output allows the generation of a precisely synchronized trigger pulses at an arbitrary time and with arbitrary pulsewidth in integer multiples of 1 ms. Pulse rates are: 1 PPS, 1 KPPS, 10 KPPS, 1 MPPS, 10 MPPS. These pulse rate outputs have a 50 percent duty cycle with their rising edge“on-time. Digital output amplitude is +2.5 Vdc into 50 ohms(+/24 ma) 0 to +5 Vdc Open Circuit) The Symmetricom data sheet is included in the attached photos. The instrument also has the optional up-converter board installed piggy-back on the receiver. It receives its power from the receiver and has two SMB connectors to accept an input signal and deliver the up-converted signal back to the receiver. This board may be un-plugged and removed. However. It appears that if this is done, some jumper settings on the receiver board will need to be changed for the receiver to work properly. As I do not have a proper antenna to supply a down-converted signal, nor the information needed to operate without the up-converter board, I am unable to receive any satellite signals to prove its operation. Therefore this instrument is sold as-is for parts or repair. It ships with
HP Z3801A 10 MHz GPS Disciplined Frequency Standard- HAM Here's a nice 10 MHz frequency standard that is having a problem. The instrument does not give a GPS"Lock" signal. And the oscillator, while very accurate and stable, is not locked to the GPS 10 MHz signal. The Z3801A uses a Motorola"Oncore" GPS receiver. As I have other GPS standards that use the Oncore. I removed this one and placed it in one of the other standards. It performed properly, giving a GPS lock within a a few minutes of power-up. I returned it to the Z3801A where the same symptoms persisted. The Z3801A may not obtain lock, but the problem is not the Motorola receiver- it is good. The oscillator. An oven type, is very accurate and stable, even without discipline. As I have other GPS units, I was able to accurately measure the frequency offset- one ... morecycle per 20 seconds, or 5 x 10 e-9, after only a few minutes of warm-up. The unit has a DC power supply installed internally by a previous owner. Who also had the 10 MHz output routed to the front panel. I returned the output connection to the rear and plugged the hole. You can return it to the front if you wish. The internal jumpers, originally set for RS-422 have been re-set for RS-232 communication. The instrument ships with a new power cord and a CD containing the Z3801A User's Guide, HP's SatStat control program, and much more information regarding using and modifying the Z-3801A for use in your"shack. I rather suspect the problem may be with the set-up. As the internal fault lights show normal operation and there is no alarm light on the front panel. But I'm unable to get the SatStat control program to run on my WIN7 computer. It requires XP or XP emulation. If you are handy with a soldering iron. Or maybe just able to run the SatStat program, you may have a working GPS disciplined standard. At the minimum, you'll have a very stable and accurate OXCO, plus a working Motorola Oncore GPS receiver! Very carefully packed and shipped via UPS/FedEx Ground
TrueTime Symmetricom XL-AK GPS Master Clock/Precision Pulse Generator• Was $2.495 Good Cosmetic Condition. With Rack Ears• New Outdoor Antenna Included• 115V or 230V Power Photos show the actual item for sale This listing comprises the receiver and antenna as shown. Full product details may be found in the User Manual here. This unit has five user configurable supplemental outputs on BNC jacks at the rear. The signal in each jack is selected by means of a jumper on the circuit board- see the photos at the end of the listing for more detail. The antenna is new and unused. The antenna voltage is 5V. For a permanent installation and accurate time/frequency generation. The antenna needs to be mounted outdoors with a clear view of the sky. T he lithium battery to maintain the settings under power loss conditions has just been replaced so it should ... morebe good for a few years but its longevity is not guaranteed. The unit should show the correct date out of the box. But if the date is inaccurate then you may need to"remind" it which GPS epoch it is in by using the Set Year function on the front panel to indicate 1999. This is standard procedure on TrueTime units of this type. Description The rack-mount XL-AK GPS receiver provides ultra-precise time and frequency. This configurable instrument provides timing outputs to within 40 nanoseconds rms of UTC/USNO and frequency outputs accurate to less than 1x10-12. Even when tracking satellites with Selective Availability(SA) implemented. User-configurable outputs provide significant flexibility in configuring the XL-AK as a central source for IRIG time codes or output pulses. Powered by The free listing tool. List your items fast and easy and manage your active items.
Rohde& Schwarz/Meinberg ED170MP GPS Satellite Disciplined Clock Used. Very Good Condition• No Antenna Included) Photos show the actual item for sale Got a Question? Here's a lightly-used high-end German made laboratory type GPS time receiver. Note that no antenna is included. The unit has been tested and been found to lock to the GPS network of atomic clocks- see screenshots at the end of the listing taken during my testing. You will need to supply your own Meinberg antenna for this unit to function. Note that the antenna includes a proprietary down-converter circuit enabling long cable runs between antenna and receiver. But that eliminates the option of using one of the generic 5V antennae you'll find available for sale on-line, so you will need to stick with a Meinberg antenna. The unit ships with the password is set to the ... moredefault value of"meinberg" These values can easily be changed using the Meinberg config utility via the process documented in the User Manual. Listing comprises the items shown in the images only. No unpictured hardware. Cables, accessories or documents are included. Description The frequency locking of the master oscillator to the GPS system enables the module GPS170 to generate fixed and programmable standard frequencies with high accuracy and stability. Various oscillator options allow the cost efficient implementation of different requirements concerning the accurracy of the outputs. The pulse generator of ED170 generates pulses per second and per minute. The pulses are synchronized to UTC second. Full details may be obtained from the User Manual Two serial interfaces are available for sending time strings. These ASCII telegrams include information regarding time. Date and status of the GPS receiver. The module provides two inputs for measurement of asynchronous time events. These capture events can be read via a serial interface. A powerful and feature-rich software called GPSMON is available for configuration and monitoring of your Meinberg GPS receivers. Features
Lucent RFTG GPS Disciplined 10 MHz Frequency Standard(GPSDO) HAM This is the frequency disciplining section of a Lucent RFTG frequency standard. The RFTG consists of both an ovenized crystal oscillator(OXCO) which is disciplined by a GPS receiver and associated circuitry. And a separate rubidium oscillator, which is also disciplined by control from the OXCO. The system is redundant, and both the OXCO and the rubidium oscillator sections are capable of being operated independently. From the exterior they both look alike, but only the OXCO has independent GPS capability. I prefer the OXCO as a standard over the rubidium unit for two reasons: 1) The stand-alone rubidium unit must be periodically calibrated. The OXCO is self-calibrating by locking to the cesium beam standards of the GPS system. 2) The rubidium unit will eventually"wear out" ... moredue to gradual failure of the excitation lamp. The OXCO will last indefinitely. Even if left on continuously- which is the preferred mode of operation. This standard has been fitted with its own lock indicator and power supply. And is extremely simple to use. There are no switches or controls, just a red/green LED to show GPS lock status and a 10 MHz output port on the front. An antenna connection and a power input are on the rear. There is no on/off switch, as the unit is intended to operate continuously for maximum accuracy. The GPS receiver and antenna power supply are shown(unconnected) at the top in the fourth photo, attached to the removable bottom of the standard. This receiver and antenna connection are not present in the rubidium version. Output is approximately 4 volts P-P of clean sine wave output into an open circuit as shown in the second photo. And half that value when terminated into a 50 ohm impedance. A new power supply and"starter" antenna are included. However, the receiver should have a standard mast-mounted antenna for best operation. They are available at modest cost here on eBay. About $30 will get you a new(5 volt) one if you shop. I'