[amsat-bb] another rotator question

[Rolf Krogstad]

Question:  My elevation rotator (Yaesu G-5400) works fine, but to raise the
elevation I have to press the down button and to lower it, I press the Up
button.  How do I reverse this so it works as intended?

Background:
I had been the traditional HF ham for years.  I had a tower with a TH7 and
a Yaesu G-1000-DXA rotator.  I then got into working satellites.  I
purchased a used Yaesu G-5400 rotator and controller.  For the five years
since installing the elevation rotator I have been manually controlling my
rotators.  I relabeled the up and down buttons on the controller and all
was good.  A few years ago I purchased a new LVB Tracker from AMSAT-NA but
it sat on the shelf.

I am now automating my rotators.  I have the azimuth rotator working fine
and have connected the LVB Tracker to control the elevation rotator and
done the configuration routine.  I can control the elevation using the LVB
buttons, but must press up for down and down for up.

I looked at the controller schematic and it appears that pins 1, 2, 3 of
the rotator cable connector are connected to the potentiometer:  pins 1 and
3 are on either end of the pot windings and pin 2 is the wiper.

I set the antenna to 0 degrees elevation (0 on far left).  I tried
reversing the wires for 1 and 3, 1 and 2, 2 and 3.  I don't think any of
these will help me here, but am not sure.

Any suggestions on how to reverse the buttons so that up is up and down is
down?

Thanks

Rolf   NR0T
Grid EN34