[1000mp] Dead Band sound?

[Pete Smith]

As it should be.  So long as it is still true on 10 meters, I think you 
have nothing to concern yourself about, because the hiss won't obscure any 
signals.

73, Pete N4ZR

At 08:07 AM 2/25/2005, Brian Smithson wrote:

>Hi Pete!
>
>Great question - yes it does, much more so on 80 and 40 than the higher
>bands.
>
>Brian n8wrl
>
>-----Original Message-----
>From: Pete Smith [mailto:n4zr at contesting.com]
>Sent: Friday, February 25, 2005 7:53 AM
>To: n8wrl at arrl.net; All about Yaesu 1000mp
>Subject: Re: [1000mp] Dead Band sound?
>
>
>What happens if you disconnect the antenna while listening to this dead
>band sound - does the sound level drop?
>
>73, Pete N4ZR
>
>At 07:44 AM 2/25/2005, you wrote:
>
> >Good morning!
> >
> >I've got a really dumb question: What should a dead band sound like?
> >
> >I've got a fairly new MkV - xmas purchase. Two weeks ago I installed a
> >full set of INRAD's including the roofing filter. I haven't had the
> >radio long enough to remember how things sounded before installing the
> >filters.
> >
> >On a 'quiet' band I hear what sounds like a louder version of the sound
> >you get from a seashell - not a hiss but a steady 'whoosh'. It's
> >steady, not pulsing, and it is quieter on the high bands (10, 12, 15)
> >than 40 or 80. The narrower the filter, the lower the pitch.
> >
> >Just to be sure, I opened the case and took the roofing filter out of
> >the loop with the same result. A little quieter because the gain is
> >down (I adjusted RF gain from 14 to 12 after installing the roofing
> >filter). I confirmed that the board was getting the 5V that it needs.
> >So I think that's ok.
> >
> >The lower I set the RF gain the quieter it is, but then I'm it would be
> >going deaf at that point.
> >
> >The one thing I haven't done yet is pull out my FT990 and listen - I
> >feel like I'm losing my mind and asking a really dumb question, but
> >does this sound like a normal sound? Signals are bright and clear -
> >it's just on the empty space that it seems louder than it should.
> >
> >What do you think?
> >
> >-Brian n8wrl
> >
> >
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