Here's one thing that you may want to do. For 160M and 75M and sometimes
40M operation, reduce the RF gain to the point where the no signal condition
{thus background noise/atmospheric noise} has the S-meter at about S-1 or
between S-1 & S-2. Keeping the RF gain down will improve S/N ratio. Also
running the AGC in the FAST mode helps.
73
Bob, K4TAX
----- Original Message -----
From: "Paul DeWitte K9OT" <k9ot@mhtc.net>
To: <tentec@contesting.com>
Sent: Thursday, October 25, 2007 8:52 AM
Subject: [TenTec] 219 filter
I did some more playing with the 219 9mhz filter last night.
I have tried it in both of the n1 and n2 positions. N2 has the inrad
roofing
filter in it also. No difference in either position. I get about a 10 db
loss which is what T T says is the loss in that filter.
This is regardless of how I play with any other functions, PBT,NR, etc.
This is for weak signal DX on 80&160m. Other bands dont need it. I am just
trying to lower the QRN to sig ratio.
Thanks for all of the replies and suggestions. I guess it is back to the
500hz filters.
73 Paul K9OT
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