[Elecraft] K3 - P3 or LP-PAN comparison

[Edward R. Cole]

I purchased the sub-Rx for entirely different application: 
dual-polarity diversity eme reception using adaptive SDR sw (Linrad):
http://www.kl7uw.com/LINRAD.htm
I originally bought two filters for the sub-Rx: 2.8 and 13-KHz 
thinking the 13-KHz filter would permit me to run wideband audio to a 
soundcard for JT-65 or Spectran waterfall displays.  But then I 
learned the K3 audio output is filtered to about 4-KHz voiding this 
approach.  Thus, I sold my second 13-KHz filter.

I currently have just one 2.8-KHz filter in the sub-Rx which is 
adequate since DSP filtering can reduce this as needed.  I should 
state I do not do HF contesting or DX chasing so need for a good CW 
filter in the sub-Rx is not required.  I have 13-KHz, 2.8-KHz, and 
400-Hz filters in the main-Rx.

I do have two LP-Pan for connection to both main-RX and sub-Rx IF 
outputs in order to provide audio IQ signals to my computer via a 
four port M-Audio Delta44 soundcard.  This is how I implement my 
dual-pol reception system for 2m-eme and accomplish 96-KHz bandspan 
bandwidth (limit of Delta44 soundcard).

For simple bandspan reception I use the LP-Pan and emu-0202 at up to 
192-KHz bandwidth on the main-Rx.


73, Ed - KL7UW, WD2XSH/45
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BP40IQ   500 KHz - 10-GHz   www.kl7uw.com
EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-?
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