[1000mp] VRF on Mark V

Tue, 06 Apr 2004 19:57:17 -0700

Hi Tom,

The IC-7800 has a tuneable RF preselector as well as the RF BPF bank.

http://www.qsl.net/ab4oj/icom/ic7800/7800_mkv.html

Cheers for now, 73,
Adam VA7OJ/AB4OJ

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Thomas Beltran
Sent: Tuesday, April 06, 2004 16:19
To: [email protected]
Subject: Re: [1000mp] VRF on Mark V

>      thanks for the email. Funny you said that because I was experimenting
> with that last night. But can you not get the same effect from turning
down
> the rf gain? I am waiting till tonight when qrn gets rough to run
> comparisons.
> Waiting to hear your reply on this topic Tom.

I hate these concentric knobs - that is one thing that keeps me going back
to the old A-4.  The VRF though, has a different quality to it - it is not
just desensing, it is one of those things you have to try.  In some cases,
it even seems like a noise blanker.  For the first six months or so, I
didn't touch it - primarily, because the literature states that it is for a
multi-op situation.  But now, as I said, I use it all the time.
Unfortunately, I am mostly on 17, so I cannot use it.  Maybe George can
figure out something to extend its range.  It was interesting to see that
the IC-7800 is using a passband frontend, in addition to selectable roofing
filters.  Tom W6EIJ

BTW, I wonder if George at INRAD has made any further progress on the
selectable roofing filters for the MP.

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