[1000mp] Interesting

[D. J.]

Opinions vary.  Hope you find the roofer to work for you.

Dale


On 18, Mar 2005, at 18:56, Bob Main wrote:

> Did the noise blanker this afternoon when I put in the roofing filter 
> and the 708 (2nd IF 250 Hz filter).  In fact, I think I've ran out of 
> mods for this rig.  The 704 (3rd IF 250 Hz filter) is backordered and 
> have 2 months to wait for it.
>
> So that's what the roofing filter does.  Cool.  You hear all this 
> techinical stuff that sounds good, but when you finally hear it, Oh 
> WOW.
>
> Thanks guys,
> Bob
> KB4CL
>
> ----- Original Message ----- From: "Mike Schatzberg" 
> <cherokeehillfarm at earthlink.net>
> To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
> Sent: Friday, March 18, 2005 7:33 PM
> Subject: Re: [1000mp] Interesting
>
>
>> It's the combination of the 1st IF being more narrow, and the higher 
>> gain in
>> the 1st IF from the 2 stage amplifier, which greatly exceeds the 
>> insertion
>> loss from the new filter.  This in turn allows you to lower the IF 
>> gain in
>> menu 9-1, and there you have it.
>>
>> All of this, plus all the benefits of the 6 pole crystal filter 
>> itself,
>> i.e.. reduction of whiskering from nearby stations, IMD improvements, 
>> BDR
>> improvements, DR improvements, etc.
>>
>> Now, do the noise blanker mod and finish the job.  It's only one 
>> component
>> change.
>>
>> 73 and Happy DXing,
>>
>> Mike
>> WB2AJI
>> ----- Original Message ----- From: "Bob Main" <bobmain1 at alltel.net>
>> To: "MarkV" <1000mp at mailman.qth.net>
>> Sent: Friday, March 18, 2005 7:12 PM
>> Subject: [1000mp] Interesting
>>
>>
>> Tuning around tonight after installing the roofing filter this 
>> afternoon and
>> notice that the bands appear to be a lot quieter.   Quiet as in lack 
>> of
>> static and other normal noise that I hear.  Still plenty of stations. 
>> Just
>> not sure if it is the roofing filter (since I really didn't know what 
>> to
>> expect) or conditions.  If it is the roofing filter, I like it.
>>
>> 73s
>> Bob
>> KB4CL
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