[amsat-bb] Yaesu G-5500 meters and readings to LVB tracker not working

Mon Oct 5 22:59:30 UTC 2020

The part number is *NJW-207-PF10 *CONNECTOR (NANABOSHI).  If you Google it,
you will find some distributors.

Dave Johnson
W9DWJ

On Mon, Oct 5, 2020 at 4:59 PM John Brier via AMSAT-BB <amsat-bb at amsat.org>
wrote:

> I don't think anything is wrong with the rotators themselves. They turns
> fine. It was only used a few times for field day. I have never had an
> antenna on them though. Got it used.
>
> Also, I am aware of the many posts about these products. The most common
> issue with the control box seems to be the meters don't work but readings
> are okay to PC interface. Both meters and readings are bad on my control
> box.
>
> Does anyone have a good source on the connectors for the cables into the
> rotators?
>
> 73, John Brier KG4AKV
>
> On Mon, Oct 5, 2020, 09:12 <kb2mjeff at att.net> wrote:
>
> > When I looked at this message again I thought it might be the loose drive
> > gear set screw issue . Does the rotor sound like it's turning, but
> antennas
> > not moving? If so you will have to take it almost completely apart to get
> > to
> > the drive gear set screw to apply Loctite, like Yeasu should have done
> when
> > they assembled it. I had to do that to one of my 5500 a few years ago. If
> > you do take it apart for another reason for the failure, make sure to
> apply
> > the Loctite anyway.
> >
> > 73 Jeff kb2m
> >
> > -----Original Message-----
> > From: AMSAT-BB <amsat-bb-bounces at amsat.org> On Behalf Of Burns Fisher
> via
> > AMSAT-BB
> > Sent: Sunday, October 4, 2020 7:19 PM
> > To: John Brier <johnbrier at gmail.com>
> > Cc: AMSAT BB <amsat-bb at amsat.org>
> > Subject: Re: [amsat-bb] Yaesu G-5500 meters and readings to LVB tracker
> not
> > working
> >
> > Oh, you were tapping the CONTROL BOX!  I totally missed that.
> >
> > One problem I have had is with those darned screw terminals.   It is
> really
> > easy to get the wires shorted--I put all of my wires in eye terminals,
> but
> > I
> > had a strand of wire sticking out in one case, and in another the angle
> > of the terminal moved around and touched another.   I finally bent them
> so
> > the wires all feed in at 90 degrees to the screw/loop.  Maybe a bit
> > obvious,
> > but...
> >
> > 73,
> >
> > Burns WB1FJ
> >
> > On Sat, Oct 3, 2020 at 9:04 PM John Brier via AMSAT-BB <
> amsat-bb at amsat.org
> > >
> > wrote:
> >
> > > Thanks Jim.
> > >
> > > So, I did that a dozen times for the azimuth side and it didn't make
> > > much of a difference. It did start reading (instead of staying at
> > > around 0), going to about 180, but never much beyond that that. And
> > > eventually it seemed to get stuck again.
> > >
> > > However, when I started doing the same for the elevation rotator I
> > > noticed that the cable jacket was falling out of the connector. The
> > > rubber and the connector wasn't compressing the jacket so there was
> > > presumably stress on the wires. When I pushed the cable in the
> > > connector the meter started reading right.
> > >
> > > There is a similar issue on the connector on the cable I am using for
> > > azimuth but pushing it in towards the connector or wiggling it doesn't
> > > seem to help.
> > >
> > > I think I am going to redo these cables. They came with the rotator
> > > and there is also a disconnect a few feet from the rotator connectors.
> > > Not sure what for. The connector there is wrapped in electrical tape
> > > so I am not sure what state it is in.
> > >
> > > One question: If the issue is in the rotator or a connection issue at
> > > the rotator, why would tapping the control box affect the issue?
> > >
> > > The only thing I can think of is there could be another issue in the
> > > box (connection or otherwise).
> > >
> > >
> > > 73,  John Brier KG4AKV
> > >
> > > On Sat, Oct 3, 2020, 18:12 Jim Walls via AMSAT-BB <amsat-bb at amsat.org>
> > > wrote:
> > >
> > > >
> > > > <snip>
> > > >
> > > > Sounds like the position pots in the rotor (not the controller) are
> > > > dirty.  That does make some sense with it not being used for several
> > > > years.  Step one (the easy way) is to use the manual control levers
> > > > on the controller and repeatedly move the rotors from end to end
> > > > while watching the needles.  If you are a bit lucky, after a few
> > > > passes back and forth, the needles will start responding correctly.
> > > > Keep trying at least a dozen full passes back and forth before
> > > > giving up on this method.  The next method requires disassembly of
> > > > the rotor - now you know why I suggest giving the first method lots
> > > > of tries before giving up on it.  If you have to resort to the
> > > > second method, I will let someone who has done that more recently
> > > > than I (about 20 years) give instructions.
> > > >
> > > > --
> > > > 73
> > > > -------------------------------------
> > > > Jim Walls - K6CCC
> > > > jim at k6ccc.org
> > > > Ofc:  818-548-4804
> > > > http://members.dslextreme.com/users/k6ccc/
> > > > AMSAT Member 32537 - WSWSS Member 395
> > > >
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> _______________________________________________
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> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
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-- 
David Johnson