[1000mp] Dead Band sound?

[D. J.]

Hi Brian,

On page 44 of the user manual for the MKV explains the front end 
selection and how they work.  For myself I always leave menu 8-4 in 
tuned.

Dale


On Feb 25, 2005, at 12:18, Brian Smithson wrote:

> Interesting - Tuned vs. Flat makes a big difference on 10-12. Sounds 
> like
> the sub receiver now. Not sure if that's good or not - I'll need to
> experiment with it.
>
> IPO on (pre-amp off) doesn't seem to make much difference on 40/80.
>
> It sounds like this is normal - I'll just have to get used to it.
>
> Thanks everyone!
>
> -Brian n8wrl
>
>
>
> -----Original Message-----
> From: D. J. [mailto:dalej2 at mac.com]
> Sent: Friday, February 25, 2005 9:34 AM
> To: n8wrl at arrl.net; All about Yaesu 1000mp
> Subject: Re: [1000mp] Dead Band sound?
>
>
> In menu 8-4 try the front end in tuned, or turn off your pre-amp,
> (green light on), I think Yaesu refers to it as IPO on which really
> means pre-amp off, confusing.
>
> Dale
>
>
> On Feb 25, 2005, at 6:44, Brian Smithson 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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>
>
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