[Elecraft] K3 3.30 FW 80M split-strange behavior

[Joe Planisky]

Confirmed, but with a few differences.  In my case, I found:

1. I don't have to actually be in SPLIT mode.

2. It doesn't seem to depend on the VFO-B frequency.

3. VOX on/off doesn't seem to matter, manually entering transmit with  
the XMIT button seems to be the trigger.

4. It's frequency dependent.

That is, if I tune VFO-A to 3.535 and tap the XMIT button to enter  
transmit and then tap it again to enter receive, the receiver is  
dead.  (By "dead", I mean I hear noise but at a very reduced level.)   
If I tap my paddle, the receiver comes back immediately.  If I do the  
same thing at 3.530 or 3.540, it doesn't happen (i.e. the receiver  
always comes back fine.)

Interestingly, I DON'T see this behavior at 3.515.

73
--
Joe KB8AP

On Oct 19, 2009, at 5:03 AM, Mark C. Killmon wrote:

> Hello,
>
>
>
> Can anyone reproduce this one, or is it just me?
>
>
>
> 80M, A VFO on 3.515, no sub receiver (I don't have one), B VFO on  
> 3.518.5.
> Key the transmitter (PTT via a footswitch or front panel XMIT) and the
> receiver comes back with vy. low sensitivity. Key it again, receiver  
> is
> fine. This effect is totally repeatable, toggling back and forth. No  
> split,
> no problem, so it's not the RF path and/or antenna.  If I use the  
> XIT to
> accomplish the split, I have the same problem.
>
>
>
> Here's the real kicker. When the split is less than 3 kHz or greater  
> than 5
> kHz, the K3 doesn't  behave this way.
>
>
>
> If I use VOX, no problem. The same configuration on 40M doesn't  
> produce this
> problem.
>
>
>
> This might be a "If it hurts when you move your arm like this, don't  
> move
> your arm like this" situation, but I generally use PTT via a  
> footswitch and
> this split is not unusual. I'll run VOX to get around it for now.
>
>
>
> V. 3.30 FW, 2.26 DSP
>
>
>
> 73, Mark
>
> K3  #2861
>
> www.k4so.com
>
> www.picasaweb.com/kfourso
>
> kfourso.googlepages.com
>
>
>
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