[1000mp] Dead Band sound?

[Brian Smithson]

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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