Is it really as simple as changing the crystal in the
SoftRock 40 from 7.038 to 8.215 to provide a band
scope for the K3? Seems too easy. I use the "Rocky"
program to manage the display.
You do NOT want an 8.215 MHz crystal (or 4 x 8.215 MHz) for the softrock if
you attach it to the IF pickup of the K3 for a bandscope. The softock has
very little isolation of the L.O. to its antenna input, and you'll inject a
lot of energy directly into the IF of the K3.
You want the softrock injection on the LOW side of 8.215 MHz. I can't tell
you what the best frequency might be because I don't know, but I suspect 8.200
or thereabouts. You may also want/need an isolation amplifier to ensure the
reverse coupling back into the K3 is at a very low level.
73,
Lyle KK7P
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