[Elecraft] Digitized IF over IP?

Edward R Cole kl7uw at acsalaska.net
Tue Nov 21 05:20:22 EST 2017


I"m not sure what bw you are requiring for IP, but I assume you are 
talking about the 1st IF of the K3 or K3s.

You do realize that its very wideband at that point.  Roofing filters 
follow the 1st IF to feed the 2nd IF and DSP ckts.  I run two LP-Pan 
from the IF of both my main and subRx on the K3.  Input bw of the 
LP-Pan is 400-KHz and can provide 196-KHz IQ baseband output.  I also 
have a SDR-IQ with max bw of 190-KHz.  I only utilize that bw when 
measuring sun noise on 1296; normal bandpass for monitoring is 
100-KHz which covers eme sub-bands.  For MAP65 I only monitor 60-KHz 
(144.095-144.155 MHz); Map65 takes output of two LP-Pan into a 
Delta44 soundcard which has 96 KHz bw.  My emu0202 can do 196 KHz but 
run from K3 audio out its limited to 4-KHz bw.

I would guess the 1st IF would receive bw of a complete band (28-30 
MHz on 10m).

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com 



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