Weird frequency drift 6700

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  • Problem
  • Updated 1 year ago
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I tried to do work some digital modes today and the PSK signals looked all crooked.  The signals shift up and down frequency.  It also does this on the SSDR panafall.  At first I thought it was some type of weird band conditions but it has done it all day on multiple bands.  I have tried different computers and have done a factory reset but I still have the problem.  Any ideas?
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Burch - K4QXX

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Posted 1 year ago

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Paul W5PF

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I had a similar problem with my 6500 a couple years ago. It was a stability problem with an oscillator which required a trip back to Austin to fix. 

73, Paul W5PF
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George Molnar, KF2T, Elmer

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Have you tried a frequency calibration run? Might give it a kick in the right direction. Do you have an external reference (10 MHz)? Is it doing okay, and was it on and stable before starting the Flex?
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Burch - K4QXX

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I don't have a external reference.  This just started happening the last couple of times I have used the radio. 
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WH6HI - Pat

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Time to call Flex.
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KF4HR

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Yep!  I had the same problem with my 6700 a couple of months ago.  FRS troubleshot the problem and it turned out to be the Reference Oscillator.  I ended up having to send my 6700 in for repair.  It was repaired quickly and returned.  Excellent service.
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Duane, AC5AA

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Yep, time to call the Mother Ship!
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Burch - K4QXX

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Crap.  That isn't what I wanted to hear...  Thanks for the info.  I guess I will be calling Flex on Monday.
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Burch - K4QXX

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For those of you that had the problem, was it intermittent?  I've had the radio on decoding PSK this morning and so far no issues.
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Paul W5PF

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In my case it was temperature related. It only occurred after transmitting for a few minutes.

Paul W5PF
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Burch - K4QXX

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At first I was thinking that too but I left the radio on all day on receive and it was still doing it when I shut it off last night.  So far today is hasn't done it.  I know it's done this at least one other time.  It was doing it yesterday before I transmitted.
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k3Tim

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I would try restarting the DaX task. If no diff, then a pwr cycle of the 6k, if no diff a factory reset.
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Steve K9ZW, Elmer

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@Burch - Might be useful to open a HelpDesk ticket today, so FRS has it for Monday.

Sorry you have troubles.  

On the good side, when my radios have gone to FRS the turn-around was nice.

73

Steve
K9ZW
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George Molnar, KF2T, Elmer

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Good luck Burch -- did you try a full reset to factory defaults AND removing (as in disconnecting the power poles from the back) power for 5 minutes? That often clears a multitude of ills.
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Burch - K4QXX

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I did do the factory reset and disconnected from power but not for 5 minutes.  Maybe 30 seconds to a minute.  Right now, the radio is working great and hasn't drifted all day.  I know this is the second time it has happened.   I had the radio on for over 12 hours yesterday and it drifted all day.  I've had the radio on for 5 hours today and no drift.  Weird.
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Tim - W4TME, Customer Experience Manager

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If it exhibits this behavior again, please open a HelpDesk ticket
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Mark wt0e

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Hi Burch,

After 17 months, my 6700 is having a very similar if not the same problem you describe.  Can you reply to let us know what, if anything, was the outcome?

Thanks!

Mark W9AT