Is an external 10MHz reference needed for a 6700 with GPSDO?

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I have a 6700 with GPSDO, with the latter connected to a dedicated rooftop GPS antenna. Is there some reason that I should connect a 10 MHz external reference standard to the 6700 in addition to the GPSPO system?
Thank you, 
Justin Smith
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Justin Smith

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Posted 1 month ago

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Bill - N4APG

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Hi Justin,

There is no reason to connect another reference to your Flex6700 equipped with the GPSDO option.  You have your frequency reference in the GPS Disciplined Oscillator already. 
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Robert Lonn

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I dont think so, the internal GPS creates the Lock Signal,, The 10 MHz external reference is active on mine using an external GPS clock generating a precise 10 MHz reference.. I use the 10 MHz reference for many items, including several radios and test equipment that can use an external reference input.. 

Robert
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David-N5PSM

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  ! The 10Mhz reference connector is an output on the 6700 !

  So you can share the GPSDO of the 6700 with other devices.

Per the manual........
"If the radio has the optional GPSDO, the 10 MHz reference output is a buffered 3.3V p-p output of the 10 MHz oscillator in the GPSDO. The signal can be used to provide a reference signal for external equipment. The connector is a female SMA."
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Clay N9IO

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Justin, like David said on your 6700 it is a 10 mhz output BUT if you want a really great reason to purchase an outboard GPDSO just use it's "data" output to a com port OR USB com converter on your PC, download the "free" GPS to PC clock software and you will always have your PC's clock dead on. I am on the road right now but I am sure someone will have the link available.
(Edited)
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Justin Smith

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Thank you Bill, Robert, and David for your helpful comments. The 6700 has both input and output connectors for a 10 MHz signal.
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Justin Smith

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Clay,
Brilliant!
Thank you,
Justin