[Yaesu] RE: [1000mp] Re: Mark V Field Power Output Test Results
Joe Subich, K4IK
k4ik at subich.com
Fri Aug 6 13:21:25 EDT 2004
> Hi Tod et all,
> I will post the data later today on the Mark V Field for
> 100, 150 and 200 watts.
If you do, please post the test procedure, equipment configuration
and current calibration certificate for the equipment.
73,
... Joe, K4IK
> ----- Original Message -----
> From: Tod - Idaho
> To: 'All about Yaesu 1000mp'
> Sent: Friday, August 06, 2004 10:45 AM
> Subject: RE: [1000mp] Re: Mark V Field Power Output Mod
>
>
> Tom:
>
> Since you apparently have the necessary equipment to make
> valid tests, could
> you please share with us the IMD numbers of your Field for
> 100,150 and 175
> watts?
>
> Tod, KØTO
>
>
>
> > -----Original Message-----
> > From: 1000mp-bounces at mailman.qth.net
> > [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of Thomas
> > Giella KN4LF
> > Sent: Friday, August 06, 2004 8:17 AM
> > To: All about Yaesu 1000mp
> > Subject: [1000mp] Re: Mark V Field Power Output Mod
> >
> > Morris et all,
> >
> > I used an HP8563E spectrum analyzer and some other equipment
> > to measure spectral purity at 100 watts, 150 watts and then
> > at 200 watts on the V Field.
> >
> > There was no discernable spectral purity degradation at 150
> > watts and a very minimal amount of degradation at 200 watts
> > and still well within FCC requirements.
> >
> > 73,
> > Thomas F. Giella, KN4LF
> > Plant City, FL, USA
> > Grid Square EL87WX
> > Lat & Long 27 58 31 44N 82 09 51 98W
> >
> > PODXS 070 PSK31 Club Member #349
> >
> > KN4LF Solar Space Weather & Geomagnetic Data Archive:
> > http://www.kn4lf.com/kn4lf5.htm
> >
> > ----- Original Message -----
> > From: morris wideman
> > To: All about Yaesu 1000mp
> > Sent: Friday, August 06, 2004 7:49 AM
> > Subject: Re: [1000mp] Re: Mark V Field Power Output Mod
> >
> >
> > Hello
> > Im curious as to how you checked the spectral purity of
> > your modified radio?.
> > Finals that are operating at 12v not 30 are going to be
> > much more likely to generate spurious emissions if they are
> > overdriven.
> > WA4MIT Morris
> >
> > ----- Original Message -----
> > From: "Thomas Giella KN4LF" <kn4lf at tampabay.rr.com>
> > Date: Thu, 5 Aug 2004 23:45:07 -0400
> > To: "a Yaesu E-Group" <yaesu at contesting.com>,"a FT-1000MP
> > eGroup" <FT-1000MP at yahoogroups.com>,"a 1000MP QTH e-List"
> > <1000mp at mailman.qth.net>
> > Subject: [1000mp] Re: Mark V Field Power Output Mod
> >
> > > My original post below has stimulated allot of
> > controversy and posts. I stand by what I already said:
> > >
> > > .....I've tested the rig extensively at 175 watts on CW
> > and RTTY and have suffered no component failures,
> > overheating, etc. and no transmit spectral degradation. Of
> > course like all mods. make it at your own risk.....
> > >
> > > I look at it this way. In the original spirit of ham
> > radio I'm not afraid to open up my modern expensive rice box,
> > to experiment and modify. In my original post I never
> > mentioned operating my V Field at 200 watts but it did hold
> > up very well with no overheating etc. at 175 watts on CW and
> > RTTY, as an experiment. Why did it hold up so well? It's
> > because the rig is better engineered and has better specs.
> > then advertised and a certain amount of "appliance operator"
> > headroom is built in.
> > >
> > > Am I stressing the rig? Maybe so but if it blows up I'll
> > fix it and/or buy another one. One ham posted in response to
> > my original post, to paraphrase, "Real Ham's understand how
> > electronics work and don't turn up the power on their rig". I
> > say "Real Ham's" are not afraid to experiment.
> > >
> > > In any event, in my day to day operations I never run my
> > V Field above 125 watts. I originally tweaked up the power
> > output because from the factory my V Field only put out 90
> > watts on 160 meters and I needed 125 watts to drive my old
> > linear to 800 watts.
> > >
> > > 73,
> > > Thomas F. Giella, KN4LF
> > > Plant City, FL, USA
> > > Grid Square EL87WX
> > > Lat & Long 27 58 31 44N 82 09 51 98W
> > >
> > > PODXS 070 PSK31 Club Member #349
> > >
> > > KN4LF Solar Space Weather & Geomagnetic Data Archive:
> > http://www.kn4lf.com/kn4lf5.htm
> > > ----- Original Message -----
> > > From: Thomas Giella KN4LF
> > > To: a Yaesu E-Group ; a 1000MP QTH e-List ;
> > FT-1000MP at yahoogroups.com
> > > Sent: Monday, August 02, 2004 6:28 PM
> > > Subject: Mark V Field Power Output Mod
> > >
> > >
> > > Justin et all,
> > >
> > > The Mark V Field power modification is simple but it
> > will attract naysayers that will warn of power supply
> > damage/failure, finals failure, degraded transmitted spectral
> > purity, etc.
> > >
> > > Pop the top and bottom covers. Gently turn the rig
> > upside down on a hard surface with the front of the rig
> > facing you. There are three boards visible. One is the
> > "Control" board on the left side, the "AF" board on the back
> > right side and the "IF/Filter" board on the front right side.
> > Go to VR3003 on the AF board and turn it clockwise. It's
> > marked "RF Power" (I think it was). Fully clockwise gives you
> > 190 watts in the CW mode on 14200 kc, 200 watts on 1845 kc
> > and 180 watts on 28400 kc. Of course connect an antenna with
> > low VSWR or a good dummy load.
> > >
> > > I've tested the rig extensively at 175 watts on CW and
> > RTTY and have suffered no component failures, overheating,
> > etc. and no transmit spectral degradation. Of course like all
> > mods. make it at your own risk.
> > >
> > >
> > >
> > >
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