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Subject:
From:
Jim Shaffer <[log in to unmask]>
Reply To:
Jim Shaffer <[log in to unmask]>
Date:
Tue, 23 Apr 2013 19:47:54 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (127 lines)
Well, not sure why you don't want labeling, but here's the button layout on 
my MFJ 993B:
ANT C-UP L-UP AUTO POWER
MODE C-DN L-DN TUNE

ant:  antenna A or B.
C-up, C-dn - capacitence up or down.
  Pressing C-up and C-down simultaneously toggles between the input and 
output sides of the L network.
L-up, L-dn - Inductance up or down.
Auto - if the button is out, it's on auto tune, and remembers the setting 
for the associated frequency.
Tune - Manually tune the tuner when power is applied.

There's more info, so you'll want to read the manual, but that's the panel 
layout.
----- Original Message ----- 
From: "Matthew Chao" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, April 23, 2013 6:31 PM
Subject: Re: hf questions


Hi, Gary.  Am looking to set up my shack after many years of no
space.  Are there tuners that are fully automatic that don't require
labeling?  Thanks.  What MFJ antenna tuner would you recommend?--Matt, 
N1IBB.

At 07:25 PM 4/23/2013, you wrote:
>Richard:
>
>don[t know much about the 480.  However, you probably mean sgc tuners.
>generally good, but quality can be variable.  I don't recall which of =
>them are weather sealed for outside mounting.
>
>My recommendation is a good manual tuner in the shack, or get an mfj =
>993b auto tuner.  With some judicious labeling, they are perfectly =
>accessible.  also have a very wide matching range.
>
>I used one for a while, but sold it because I didn't need it.
>
>Gary Lee
>[log in to unmask]
>
>
>
>On Apr 22, 2013, at 8:33 PM, Richard Fiorello <[log in to unmask]> =
>wrote:
>
> > Hi everyone;
> > I've been away from this list for about a year because it didn't =
>appear=20
> > that h f was going to happen.  Sold some of my toys but fortunately =
>kept=20
> > the ts480.  I've run across someone to offer some antenna help who =
>knows=20
> > far more than I which may have some possibilities.
> > A couple somewhat basic questions have come up that I'm certain 
> > people=20=
>
> > here can easily answer.
> >=20
> > First, has anyone worked with tuners from stg?  I never heard of 
> > them=20=
>
> > until it was suggested that they made the tuner I had to have.=20
> > Apparently they are a remote tuner that mounts up at the antenna.  I=20=
>
> > gather that the tuner gets its operating current through the coax 
> > but=20=
>
> > that seems like a bit of a mystery.  It would seem that the tuner =
>could=20
> > only be used with one antenna in this arrangement.  Any thoughts=20
> > appreciated.
> > Secondly I have run across a few things with the 480 that are a bit=20
> > perplexing.  Wonder if most people run the receiver with the preamp =
>on?=20
> >  My noise is manageable without the preamp  but once its turned on 
> > the=20=
>
> > noise goes up as much as the signal.
> > As for the internal tuner I've been astonished with the high swr it =
>will=20
> > match.  It seems to act rather strangely if the swr is between 1.4 and =
>2=20
> > to one.  Often once the tuner finishes the forward power is ten wats=20=
>
> > lower than it was when the tuner isn't in the line.  Is there any 
> > type=20=
>
> > of reset I should be looking at?
> > I have speech set to read the s meter which is great but not at all=20
> > certain if its accurate.  Someone was looking at the s meter and 
> > there=20=
>
> > readings and the readings via the vgs1 were very different.  It 
> > seemed=20=
>
> > that the agc setting had a lot to do whith the accuracy of the =
>reading.=20
> >  Has anyone else noticed this?
> > I still find the fact that most keys on the number pad have to =
>functions=20
> > to be a bit challenging.  Number four will set tx monitor and tx =
>power.=20
> >  The other day I hit four more times than I care to count and all I =
>got=20
> > was tx monitor when I wanted to change the power setting.  There must =
>be=20
> > some sort of timing that I just don't seem to get.
> > Lastly I thought I kept all my important messages from yester year 
> > and=20=
>
> > obviously the one I wanted wasn't in my folder.  What is the 
> > situation=20=
>
> > with the microphone plug adaptor.  Apparently two wires had to be=20
> > reversed.  When doing this did you need to buy an extra plug or 
> > socket=20=
>
> > or could you change the wiring on the existing adaptor?
> > Sorry for all the questions and wish me luck on an antenna project or =
>two.
> > --=20
> > richard 

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