[Elecraft] [K3] Filters for mixed JT65 and JT9 HF

[Sam Morgan]

not sure what your TX problem is Michael?

I am running WSJTX v1.2.1, r3587
I am using the K3's AM filter for RX so I can run WSJTX in dual mode

I am running WSJTX using WSJTX's CAT through DXLabs Commander

I just tested my TX all the way from 200 up through 4400
and I can tx with the full audio out of 5 bars
and no reduction in power out

also I am running a SignaLink USB,
but that would have anything to do with it because the audio in WSJTX is 
always between 1500 – 2000 Hz. when in dual mode.


to quote the help notes in WSJTX Version 1.2 Aug. 16, 2013:

Pages 11 & 12    #13.

"Note that most SSB transceivers have a fixed Tx filter that will not 
pass audio frequencies higher than about 2700 Hz. WSJT-X v1.1 takes care 
of this by using Split mode, receiving with VFO A and transmitting with 
VFO B. The Tx dial frequency (VFO B) is offset in 500 Hz steps, and the 
generated audio frequency is adjusted so that it always falls in the 
range 1500 – 2000 Hz. With CAT and Split Tx enabled on the configuration 
screen and your transceiver set to Split mode, frequency control will be 
handled automatically."

On 10/6/2013 2:41 PM, Michael Jensen wrote:
> Hi
>
> I am right now using this exact setup with WSJTX.
> I do get the about 400Hz to 4200 on the waterfall, but TX are an issue.
> As "i guess" the K3 transmit through the 2,8 Khz. filter when ever i try to
> work a JT9 QSO above 3,0 Khz on the waterfall i do not see any audio output.
> I have been looking for a way to TX through the AM filter but have not found
> the way.
>
> Any hints please ?
>
>
> Thanks in advance
>
> 73 De OZ1BZJ
> Michael

-- 

GB & 73
K5OAI
Sam Morgan