[1000mp] roofing filter and menu 9.1

[Tod - MN]

You could simply reduce the value by 3 and check things and then by 4 and
check again. Almost everyone reporting has stated that the change is either
3 or 4. The difference is probably attributable to the fact that the
adjustment is not continuous. 

If you have even an 'uncalibrated' signal generator that you can connect to
the input of the radio through attenuating resistors (so you don't overload
things) you could adjust the attenuation so that the S-meter reads S9. Then
use the same set up after you make the modification to select the reduction
in gain needed.

That should be plenty close enough.


Tod, KØTO



> -----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 7:33 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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