[1000mp] INRADS Roofing Filter

[ON4ADZ]

Dear Bob

After the roofing filter is a amplifier installed, this must compensate the
insert losses of the filter.

But the insert losses are not so high, so you have to reduce the IF gain in
the receiver.

73
DIRK
ON4ADZ



-----Oorspronkelijk bericht-----
Van: 1000mp-bounces at mailman.qth.net
[mailto:1000mp-bounces at mailman.qth.net]Namens Bob Main
Verzonden: zaterdag 5 februari 2005 14:20
Aan: MarkV
Onderwerp: [1000mp] INRADS Roofing Filter


I have got to ask this because it is bugging the heck out of me.  First, I
have no doubt the roofing filter works, but everybody is having to reduce
the IF-Gain to cut back on the additional noise that is now received.  Dumb
question, if you cut back on the IF-Gain BEFORE you install the roofing
filter won't that also cut back on the noise?  Just thinking that if the
noise is what is bothering you then reduce the IF-Gain now instead of later.

BTW I do plan on ordering the roofing filter too, but that has just been
bugging me.

Bob
KB4CL

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