Are you using Ham Radio Deluxe? That's a known bug of HRD.
73,
... Joe, W4TV
On 9/19/2011 12:22 PM, David Inger wrote:
> Has anyone experienced anything like this?
>
> I am using a K3 (FW version 4.39; DSP version 2.73) with a KPA500 amp
> connected to the K3 with the Elecraft AUX cable.
>
> I normally have the AGC set for AGC-S when operating SSB or digital modes.
> If the K3 is in receive mode for several minutes, the AGC turns itself off
> without warning (accompanied by a hugh volume increase from the speaker).
> While this doesn't happen every time, it has happened several times. It
> seems to be most likely to happen if the Noise Blanker is turned on and the
> KPA500 amp is on and ready for operation (as opposed to being in standby
> mode).
>
> When I installed my KPA500, I upgraded the K3's firmware to the above
> versions. I have no idea what is causing the AGC to turn itself off, or if
> it has anything to do with the firmware upgrade, the amp, or both, or
> neither.
>
> I would appreciate any help that exorcises this demon.
>
> 73 de K6SBA
> David in Santa Barbara CA
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