[amsat-bb] another rotator question

[Mike Thompson]

Is the antennas physically moving up when you press the up button? IE when
you press a button, is the rotor moving opposite, or is the needle
indicating opposite?

On Tue, Mar 27, 2018 at 11:53 AM, Rolf Krogstad <rolf.krogstad at gmail.com>
wrote:

> 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
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