External GPSDO products and projects

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  • Updated 1 year ago
I use a 6500, have had it for about 2+ years and having a ball with it. I added a Jackson Labs GPSDO mainly just to be dead nuts balls accurate and because I could. Most if not all of these can also be used to create time servers such that when operating portable you could have a timing reference for FT8.

I'm finding a few products out there that today would be less expensive alternative to my Jackson http://www.jackson-labs.com/index.php/products/lc_xo_plus_kit at $600+ such as

at $170 (friend is using this one on his IC7610) https://www.ebay.com/itm/NEW-10MHZ-SINE-WAVE-GPS-DISCiPLINED-CLOCK-GPSDO-with-LCD-Display-Frequency/263627123794?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649

at $90 https://www.ebay.com/itm/NEW-10MHz-Sinwave-PLL-GPSDO-GPS-DISCIPLINED-OSCILLATOR-adapter-GPS-ANT/2620...

What other GPSDO products or projects are out there?

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Posted 2 years ago

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Craig Williams

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Rory - N6OIL

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When using these external GPSDO does the software see them?
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Jon - KF2E

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From the hardware reference manual...

The radio can use the external 10MHz reference, the optional GPSDO reference, the internal TCXO reference, or choose among them automatically. When set to automatic mode, the radio prioritizes the reference signals in External, GPSDO and TCXO order. In automatic mode, the radio watches for the appearance or disappearance of reference signals and chooses the highest priority available signal. In manual mode, the radio uses the selected input whether a signal is present or not.

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Rory - N6OIL

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See, I just need to RTFM!
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James Skala

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I'm wanting to buy a external gpsdo for my flex 6400.

If you have purchased one will you please send me the link and reviews.
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John Culliton

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I use the BG7TBL GPSDO with my 6500. It just works. Available on Ebay or Amazon
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Don N

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I use one made by Leo Bodnar. He has a couple of models, one with 2 ports, the other a single output. They are strictly for providing a clock, no NTP functions. The good thing though are the wide freqs out, 800 hz to somewhere north of 800mhz, i forget right now. They can run off a battery if you need to use as a simple source to test antennas, placed out across the yard.... poor mans test range. The 2 port model has semi independent selection of freq for each port, though #2 selections depend on #1 setting. I use the 2 port to clock the Flex and a DEMI 432 xvtr. I think the single port model is about $145 or so. They are about the size of a deck of cars. Try Airspy.com or this link if you like

73, Don
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John - W8AGS

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I also use the one by Leo Bodnar. I use one output for the Flex 6600 and other for Flex 5000. The antenna that came with it works very well. The antenna is inside on the 2nd floor. Has no trouble receiving and locking on to the satellites. Bought it from AirSpy.com. Very satisfied with it.
73, and Happy New Year.

John, W8AGS
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Michael Walker, Employee

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I know of many who use this one.  https://www.ebay.com/itm/NEW-10MHz-Sinwave-PLL-GPSDO-GPS-DISCIPLINED-OSCILLATOR-adapter-GPS-ANT/2620... for $89.  

I have used it to find a PLL signal to my modified transverter and it has been fine.

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I have used Tindie https://www.tindie.com/ GPS products are very good. Geppetto Electroncs puts out  well documented GPSDOs.
I feed the GPS output into a Down East  Microwave https://www.downeastmicrowave.com/ (DEM Model 10-4)  for a reference for multiple devices.