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

[Joe Subich, W4TV]

I checked both K3 s/n 622 and s/n 1450 ... no transmit when 
switching from DATA to AM on either rig.  Tried with and without 
VOX and all Data submodes. 

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Roger Marrotte
> Sent: Friday, December 26, 2008 7:53 AM
> To: Elecraft at mailman.qth.net
> Subject: RE: [Elecraft] Transmit when switching from DATA to AM mode?
> 
> 
> I just tried to recreate this and did not see it happen.  No 
> messages of any kind showed up on the front panel of the K3 
> and there were not any changes to the meters on the attached 
> power supply.
> 
> K3 #1192
> MCU 2.76
> AM Filter installed
> Tried in and out of band
> With PTT and VOX on
> A microphone is connected but it is connected at the back of 
> the radio.
> 
> Roger, W1EM 
> 
> |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.
> |
> |Anyone else see this?
> |
> |73
> |--
> |Joe KB8AP
>