[1000mp] 1000MP Settings after Roofing Filter Installed

[Mike Schatzberg]

Hello Doug:

After installing several Inrad roofing filters in different Mark V radios, I
would suggest lowering the gain in menu 9-1 by two integers from the factory
setting.

You will notice that signals that are S9 on the modified main receiver, will
be approximately S9 on the second receiver.  The S meter will not be linear
below S9 however, and will differ from the second receiver readings more and
more as the signals become weaker.

I used my signal generator to confirm the S9 correlation with 50 microvolts
input.

In practice, I keep the RF gain reduced to further lower the noise floor.  I
synchronize the frequency of the second receiver to the main board, and use
the S meter on the second receiver to give signal reports.

73 and Happy DXing,

Mike
W2AJI



----- Original Message ----- 
From: "Doug McCann VA3CR" <va3cr at rac.ca>
To: "1000mp" <1000mp at mailman.qth.net>
Sent: Monday, October 23, 2006 8:19 PM
Subject: [1000mp] 1000MP Settings after Roofing Filter Installed


> I just installed the INRAD roofing filter.
> Any suggestions about changing the menu settings after the install?
>
> Doug, VA3CR
> www.va3cr.net
>
>
>
>
>
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