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Is there a Bug on 6600 with 3.3.33 on Preamp/ATT?

Hi folks,
I have a brand new 6600 and found out a little strange thing with Preamp/ATT on ANT2.
It´s independend of used OS, so same on Maestro, Windows and IPad/IPhone.
We have a automated 6x2 Antenna switch on ANT2, all Monobanders with Bandfilters and a Multiband Vertical on ANT1.
Most used is ANT2 connector.
If we switch on the radio with activated ANT2 and then switch to - or + dB steps, the RX goes totally deaf as there is no antenna connected.
Then switch to ANT1 and any step of Preamp/ATT and all is working as it should, switch back to ANT2 and this also works now until the next reboot of the radio.
Any suggestions?


  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin

    I doubt this is a software bug. If it was, thousands would be reporting the same problem.

    I did open a support ticket for you. They will likely first ask you to reset your radio to see if the problem goes away.


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