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    Flex 6400 not keying amp after upgrade to SDR v2.6.2 - solved

    Member ✭✭
    edited June 2020 in SmartSDR for Windows
    Today I updated my Flex 6400 from SDR v2.6.1 to v2.6.2.  When I tried to key my Expert 1.3K - FA amp, it was not being keyed. Shorted the RCA jack to the amp and it keyed.  After spending an hour troubleshooting, I happened to look at the TX Profile on the SDR Settings, Radio, TX tab.  It was set to default, which sounds reasonable.  But, I saw a new setting, 6400_20200318 and wondered what that was for. As soon as I selected that, the amp started keying.  I did not find anything in the 2.6.2 release notes, but perhaps it was there.  That seems to be a problem that many 6400 users running amps might encounter.  My guess is any 6400 user running an amp needs to update the TX profile setting.  I have no idea why it is there, but it works.

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