You definitely need the amp for the 250 Hz filter.
Otherwise it's not a bad idea.
73
Rick
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of Lee A Crocker
Sent: Wednesday, July 14, 2004 10:04 AM
To: tentec@contesting.com
Subject: [TenTec] Redesigning the filter section of the Orion IF
Given the results of the INRAD 600hz filter replacing
the 1khz filter in the Orion, has anyone looked at
modifying the IF board to include all filter position
in parallel?
>From looking at the schematic, it looks to me you
could cut a couple of traces, re-route the signal and
add a nand gate and a couple of steering diodes to
have all the roofing filters positions available ahead
of the offending amplifier. You would need the custom
filters, but given the apparent ease of modification
and ready reversibility, it looks like this could be
done fairly easily. I haven't measured anything yet,
just brainstorming. Has anyone considered this?
73 W9OY
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