[TenTec] Installing i.f. output mod or roofing filter for Corsair II

[Barry N1EU]

I'm no expert, but I'd try tapping the 9MHz i.f. on the 80987 RF Mixer
board, between C21 and T8, and take the output through another .01 ceramic
disc cap if there's no input cap on the buffer amp board.  That's in the
center of the schematic on manual p3-10, right after the D7/D8 diodes that
split off the TX/RX signals.  You definitely want to tap before the Y1 xtal
filter.  Please let us know how it works.

I had once asked George W2VJN of Inrad where he would install a roofing
filter on the Corsair II and that's where he pointed, although that also
has never been done before to our knowledge.  Again, please let us know if
anyone tries this.  I'd like to do this myself some day and actually have
the roofing filter on hand.

73, Barry N1EU


On Sat, Dec 19, 2015 at 2:38 AM, jon greenwood via TenTec <
tentec at contesting.com> wrote:

> Barry,
>
> I have a Clifton labs amp that I was wanting to install in my Corsair 2
> 9mhz IF for a panadapter. Not to steal your thread but do you have any
> thoughts as to where you would pull the IF out on the Corsair?
> 73Jon N8MUS
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