[Elecraft] Transmit when switching from DATA to AM mode?

[Grant Youngman]

Hmmm.  I do have a 6Khz filter installed.  This is NOT happening on my  
radio (2.76, #2091).  If I configure the 6khz filter out, it still  
does not occur.

Grant/NQ5T


On Dec 25, 2008, at 10:03 PM, John Buck wrote:

>
> I confirmed on K3 #125 with V 2.76, the behavior described by KB8AP  
> below.
> I also noted that the power supply jumps up to the level expected  
> for the power setting.
> So I believe that it is attempting to transmit during the second or  
> so of the transient.
> This is not a good thing.  I do not have a 6 kHz filter installed.
>
> John KH7T
>
> Hi all,
>
> I've just discovered something odd with my K3 (#1772).  When I  
> switch mode from DATA to AM via the front panel Mode button, the rig  
> tries to transmit.  The red TX light comes on momentarily and I get  
> a ERR TXF message (if in band) or an END message (if out of band) in  
> the VFO B area.  I don't have the AM filter installed, so I don't  
> think anything is actually going out over the air, but it doesn't  
> seem like the rig should ever go into transmit on a mere mode change.
>
> It ONLY happens when going from DATA to AM, not when going from FM  
> to AM or between any other modes in either direction.  There is no  
> mic connected to the rig, nor anything connected to the rear panel  
> mic or line inputs.  The only things connected to the rig are a  
> paddle, an external speaker, and the antenna.   It happens whether  
> in VOX or PTT mode.
>
> I first noticed it with MCU 2.67 (although I can't say if it  
> happened with earlier versions.)  I've updated to the 2.76 beta  
> release and it still happens.
>