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

[Joe Subich, W4TV]

Sam's advice is correct ... however, the FM filter is a suitable
alternative to the AM filter if you plan to do/try FM on the top
end of 10 Meters, 6 meters or install the internal 2 m transverter
at some point.  Either the FM or AM filters will provide a 4 KHz
wide waterfall (200 - 4200 Hz) with the current WSJT-X software.

The high stability TCXO is most certainly not needed - drift over
one minute at HF just isn't a factor.

73,

    ... Joe, W4TV


On 9/14/2013 11:20 AM, Sam Morgan wrote:
> I would defiantly add the AM filter, works great for dual JT65 + JT9 wf
>
> I do not have or need the TCXO, the stock K3 works fine for stability
> the timing with a pgm like NTP is more of a key factor for QSO's
>
> ymmv
>
> On 9/14/2013 10:10 AM, dberkley wrote:
>> I am considering purchase of a K3 (I own a K2).  One application is
>> the new
>> mixed JT65-JT9 HF mode.  Possible accessories are:
>> -KFL3A-6K   6 kHz AM / ESSB, 8-pole filter (to allow full band mixed
>> waterfall)
>> -KTCXO3-1  TCXO  (0.1 ppm typ) High Stability Ref. Osc. (to provide
>> stability especially as required by JT9)
>> Are these needed and reasonable choices?
>> 73, David, K2MUN
>>
>