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Subject:
From:
Tom Brennan <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Mon, 15 Apr 2013 23:18:15 -0500
Content-Type:
TEXT/PLAIN
Parts/Attachments:
TEXT/PLAIN (117 lines)
Its not an amp, its an artificial ground and is connected to the ground terminal
of the radio.  Its never anywhere in the antenna path.

Tom


Tom Brennan  KD5VIJ, CCC-A/SLP
web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html

On Mon, 15 Apr 2013, Steve Dresser wrote:

> Date: Mon, 15 Apr 2013 15:59:56 -0400
> From: Steve Dresser <[log in to unmask]>
> Reply-To: For blind ham radio operators <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: mfj 931
>
> Tom,
>
> If you're using the internal tuner on the TS-2000, how can it tune the
> antenna when the amplifier is in the path?
>
> If you wanted to hook the meter up with the cabinet closed, you could
> install a three-conductor jack on the back, with the meter connected to the
> tip and the ring so neither terminal would be directly grounded.
>
> Steve
>
> ----- Original Message -----
> From: "Tom Brennan" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Monday, April 15, 2013 12:52
> Subject: Re: mfj 931
>
>
> > Steve, I do have one.  In fact, I've got one of the Omega units.  However,
> > this
> > thing has to be adjusted all the time and you have to work with it while
> > adjusting it.  Seems like a real potential problem to have the cabinet off
> > of
> > the unit to access it.  Since its essentially to control rf ground issues
> > that
> > seems like it would defeat the purpose of it.  Since the meter is reading
> > current I'm also not sure what that would do to the stability and
> > reliability of
> > its circuitry.  Apparently you have to adjust this thing going back and
> > forth
> > between it and the antenna tuner (mine is internal on a ts2000) to adjust
> > it.
> > Then there are also the swr measures to change on the antenna so it would
> > be
> > quite a circus to add a vom to that mix <g>.
> >
> > Tom
> >
> >
> > Tom Brennan  KD5VIJ, CCC-A/SLP
> > web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html
> >
> > On Mon, 15 Apr 2013, Steve Dresser wrote:
> >
> >> Date: Mon, 15 Apr 2013 12:12:32 -0400
> >> From: Steve Dresser <[log in to unmask]>
> >> Reply-To: For blind ham radio operators <[log in to unmask]>
> >> To: [log in to unmask]
> >> Subject: Re: mfj 931
> >>
> >> Tom,
> >>
> >> If you had one, you could try putting a VCO across the meter.  That would
> >> give you some indication of what the meter is doing.
> >>
> >> Steve
> >>
> >> ----- Original Message -----
> >> From: "Tom Brennan" <[log in to unmask]>
> >> To: <[log in to unmask]>
> >> Sent: Monday, April 15, 2013 11:25
> >> Subject: mfj 931
> >>
> >>
> >> > I've got an MFJ 931 artificial ground.  The unit has a meter on it
> >> > that's
> >> > supposed to let you watch current and adjust both current and
> >> > capacitance
> >> > with a
> >> > couple knobs of the unit itself.  Has anyone got a work around for that
> >> > meter?
> >> > I called MFJ tech support and spoke to Bob.  He was really unhelpful
> >> > with
> >> > the
> >> > whole thing first telling me that you didn't need the meter because all
> >> > it
> >> > shows is current and then telling me you had to use it to adjust the
> >> > unit.
> >> > I
> >> > never could get him to tell me anything other than you didn't need the
> >> > meter.
> >> > That's the first time in years that I've ever had a useless response
> >> > from
> >> > MMFJ's
> >> > tech support but I guess there's a first time for anything.  Therefore,
> >> > any
> >> > suggestions from any totals who don't have eyes around for using this
> >> > thing
> >> > would be appreciated.
> >> >
> >> > Tom
> >> >
> >> >
> >> > Tom Brennan  KD5VIJ, CCC-A/SLP
> >> > web page http://titan.sfasu.edu/~g_brennantg/sonicpage.html
> >> >
> >>
> >
>

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