GPSDO alternative

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  • Updated 2 months ago
I have a Flex 6300 and participate in FMT (Frequency Measuring Tests).  The 6300 can't use the GPSDO from Flex so I looked for an alternative.  I purchased the GPSDO from BG7TBL. It is a 10Mhz unit and extremely accurate. I use the setup for frequency adjustment within the Flex software to read my 10Mhz signal.  The results of the FMT show how well it works.  The price was $139.  Try it, you'll like it...
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Bob Brown - N8OB

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  • satisfied

Posted 11 months ago

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Jim Gilliam

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What is the downside of just calibrating on 5/10 MHz. on WWV?
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Jim Gilliam

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Unless everyone on the band is accurate to 1/1000 Hz., seems sort of moot.
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Tim - W4TME, Customer Experience Manager

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Depends on your application.  If driving a uWave XVTR, this is very important so that you reduce frequency multiplication errors.
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Ross - K9COX

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I find myself drifting with age and a friend tells me I have no long term stability
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Winston VK7WH

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Hi Ross. In doing a little research on the units, it appears there are a number of different models available. Can you tell which models you purchased? Was the 10 MHz output sinewave or square wave?

Many tnx

Winston
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Bob Brown - N8OB

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I purchased the BG7TBL 2016-05-31 version and it is sinewave.  I have a rubber duck antenna on the 10Mhz connector which I use to check the radio frequency and for adjustment purposes.
Bob - N8OB
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Mike va3mw

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During FMT with my stock 6300 and using the 800hz beat tone, I think I was less than 1Hz on all readings.  It was pretty impressive.  My worst reading was 0.80 Hz and my best was 0.08Hz.  I even surprised my self.  And, that was my first time.  
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Larry - W8LLL

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How is an external 10 MHz GPSDO connected to a 6300?
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Michael Walker, Official Rep

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A 6300 will not support 10Mhz or a GPSDO.

Mike
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Larry - W8LLL

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That's what I thought but the first post is saying otherwise.
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Larry - W8LLL

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I understand now what he is doing.
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Michael Walker, Official Rep

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Ah.  He sent a 10Mhz signal to the radio on one of the antenna ports and then did the 10mhz calibration much like you would do on WWV.