Jim,
The IF take-off point normally used for the K2 is at J12 pin 1 which is
after the Post-Mixer amplifier. That point provides a signal that is
about equal in strength to the antenna input affords isolation for BFO
leakthrough.
For everyone's information, DX Engineering is selling the Clifton Labs
buffer amplifier (but not the specific K2 version that Jack Smith (SK)
also sold.
73,
Don W3FPR
On 2/15/2019 12:02 PM, Jim KO5V wrote:
Good morning,
I have a HupRF PAT tap buffer amp board for my K2's IF. I installed an SMA
connector on the heatsink panel
when I built the rig.
Looking at the K2's block diagram, the IF is shown between the mixer and
post-mixer pre-amp. On the schematic,
that appears to be between Z6, pin 2, and C159. My plan is tap the mixer-side
of C159, then attach the ground
braid to the ground side of R80. Is this the right way to do this?
I've searched this reflector, and the web, and I can't really find anything specific
using "K2 IF out", etc.
SDR kits' site (they sell G4HUP's kits since Dave passed away), and the HupRF
site have no instructions for
Elecraft rigs. There are links to installation instructions in the most popular
Yaekencom radios, but not the K2,
even though they are selling the K2 boards.
Thanks again. 73,
Jim KO5V
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