[1000mp] roofing filter and menu 9.1

[Blake M.]

>From Page 5 of the XG-1 manual:

"Using the results from the previous page, you can calculate the 
signal-to-noise ratio (S+N/N) at 1microvolt, and estimate the MDS (mininum 
discernable signal) as follows:"

(Equation omitted).


73,
Blake N4GI

----- Original Message ----- 
From: "Jim W7RY" <w7ry at centurytel.net>
To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>; "'All about Yaesu 
1000mp'" <1000mp at mailman.qth.net>
Sent: Monday, January 24, 2005 12:14 AM
Subject: RE: [1000mp] roofing filter and menu 9.1


> The XG-1 will not allow you to determine the MDS level of the receiver.
>
> 73
> Jim W7RY
>
>
>
> At 06:28 PM 1/23/2005, Hank Beisheim wrote:
>>I'd recommend the elecraft XG-1 calibrated signal source if you want to
>>accurately set menu 9.1.
>>
>>Hank
>>W6IR
>>
>>-----Original Message-----
>>From: 1000mp-bounces at mailman.qth.net 
>>[mailto:1000mp-bounces at mailman.qth.net]
>>On Behalf Of Bob Main
>>Sent: Sunday, January 23, 2005 6:33 PM
>>To: All about Yaesu 1000mp
>>Subject: Re: [1000mp] roofing filter and menu 9.1
>>
>>
>>OK now to find something that will give me 50uV so that when I get the mod 
>>I
>>
>>will be able to set it up properly.  Luckily between the delay in them
>>sending the mod and when I will be able to order it will give me plenty of
>>time, at least 3 or 4 months.
>>
>>Thanks,
>>Bob
>>KB4CL
>>
>>----- Original Message -----
>>From: "Mike Schatzberg" <cherokeehillfarm at earthlink.net>
>>To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
>>Sent: Sunday, January 23, 2005 4:28 PM
>>Subject: Re: [1000mp] roofing filter and menu 9.1
>>
>>
>> > Hello Bob:
>> >
>> > On my Mark V, a reduction of 3 numbers in menu 9-1 brought parity to
>> > the S meter, after checking the meter on 10 meters, with the tuned
>> > preamp on.
>> >
>> > I used a signal of 50 microvolts, which gave a reading of S9 before
>> > the
>> > mod,
>> > and about 15 DB over S9 following the mod.
>> >
>> > In the end, I decided upon a reduction of 2 numbers only, which seemed
>> > to produce the best signal to noise ratio, and enabled me to hear the
>> > very weakest S0 stations best.
>> >
>> > Today I regularly work S0 stations with no effort at all.  What a
>> > sensational improvement in the Mark V.
>> >
>> > 73 and Happy DXing,
>> >
>> > Mike Schatzberg
>> > WB2AJI
>> > ----- Original Message -----
>> > From: "Bob Main" <bobmain1 at alltel.net>
>> > To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>
>> > Sent: Sunday, January 23, 2005 7:24 PM
>> > Subject: Re: [1000mp] roofing filter and menu 9.1
>> >
>> >
>> >> Just wondering how do you know what to turn it down to?
>> >>
>> >> Bob
>> >> KB4CL
>> >>
>> >> ----- Original Message -----
>> >> From: "Jim W7RY" <w7ry at centurytel.net>
>> >> To: "All about Yaesu 1000mp" <1000mp at mailman.qth.net>;
>> >> <1000mp at mailman.qth.net>
>> >> Sent: Sunday, January 23, 2005 6:36 PM
>> >> Subject: Re: [1000mp] roofing filter and menu 9.1
>> >>
>> >>
>> >> > When I installed my roofing filter in my MK-V 1000 MP I had to turn
>> >> > my menu 9.1 from 13 down to 10.
>> >> >
>> >> > You most likely will need to do the same.
>> >> >
>> >> > 73
>> >> > Jim W7RY
>> >> >
>> >> >
>> >> > At 01:27 PM 1/23/2005, Kostas SV1DPI wrote:
>> >> >>  I added the roofing filter in my MARK V.
>> >> >>     Does it need to decrease this value?
>> >> >>     I read in inrad manual that i need to increase if i had IF mode 
>> >> >> =
>> >> >>     installed (i didn't).
>> >> >>     I had the impression reading the emails here that i must
>> >> >> decrease
>> > it.
>> >> >>     I noticed that s-meter is wrong now (without decreasing the
>> >> >> 9.1
>> > menu)
>> >> >>     Confused.....
>> >> >>     Kostas SV1DPI
>> >> >>
>> >> >>
>> >> >>_______________________________________________
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>> >>
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>> >
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