[Elecraft] KDSP2 problem

Steven Pituch spituch at ev1.net
Thu Jun 9 17:31:49 EDT 2005


Hi all,

OK, I think I have all the upgrade modes working on my K2 #402.  It was 
a lot more work than I thought it would be; lots of changes.  The CW 
filters seem significantly better than before.  And the SSB filter looks 
quite flat.

However, I just installed the KDSP2, and based on the manual the auxbus 
isn't communicating with the dsp unit.  I seem to be able to use the 
default filters, but when I hit "display" I still get the voltage and 
current readout.  Also I think I was supposed to get a clock setting 
routine when I first powered up.

Everything seemed to go together OK, except the width of the socket for 
the clock IC is significantly narrower than the IC pins.  I had to 
actually bend the pins inwards in order to get them into the socket. 
That's the first time that has happened.

I am studying the schematic now.  Any suggestions?

Also, what happens if I want to do a cal pll or something.  Don't I need 
the freq counter probe plugged in to do that?  Would I need to remove 
the DSP unit and then short out the connector where r18 and r19 are shown?

As good as the radio was before the mods, its gonna be a killer once I 
get this dsp working.  I'm impressed.

Thanks,
Steve, W2MY


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