[Elecraft] KX2 80m LSB bug

[Wayne Burdick]

Hi Linas,

I can't duplicate this problem on my KX2. I would suggest re-doing the transmit gain calibration on 80 meters. 

Set mic gain to about 15-20 with the MH3, or about 30-50 with the internal mic.

73,
Wayne
N6KR


On Mar 13, 2017, at 7:14 AM, Irma Linas <irmalinas73 at gmail.com> wrote:

> Hello group,
> 
> I am now a proud owner of the brand new KX2 which arrived few days ago
> straight from CA. Being also a proud owner of an old and fully upgraded K3
> I found this little rig very familliar to operate and navigate. Very lovely
> package of all what you need on QRP, including the battery pack and the key
> paddle! I am especially amased by the built-in microfone - it works very
> nicely and I am re-descovering the SSB mode being mainly the CW op! The RX
> audio quality  of SSB signals is outstandingly pleasant even with this
> small speaker! The general sensitivity of the receiver though  seems a bit
> too low compare to the K3 thus the preamp is needed most of time even with
> good antennas. But that is no problem.
> 
> A strange bug appears to live in the radio. It only related to 80m band LSB
> mode. It is not possible to get the signal transmitted if you are on 80m on
> power-up or if you come to 80m LSB from another band. Pushing Xmit or mics
> PTT puts the rig into transmit mode but RF meter shows no output. If you
> want to transmit, you have to change the mode into CW, transmit a dot or so
> ( it always works on CW ok ) then change back to the LSB mode and then only
> it starts transmitting your SSB signal out. The bug is NOT related with the
> " RF in the shack" case, it is there with different antennas and the dummy.
> The bug is permanently there and does not depend on battery supply,
> voltage, etc. I have also tried to reload the latest firmware , no change.
> So I think it could be the firmware problem.
> 
> Would be interesting to know if anybody else experiencing the same strange
> effect?
> 
> 72! de Linas LY2H
> KX2 #1488
> K3 #1568 S-upgraded
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