[amsat-bb] another rotator question

[Rolf Krogstad]

The antenna is rotating.   I do a visual check and the antenna is
horizontal.
I have the controller indicating zero, I press the DOWN button and hold it
for a bit.
When I go out and do a visual check the antenna is now elevated above zero.

Rolf  NR0T

On Tue, Mar 27, 2018 at 12:11 PM, Mike Thompson <zryder94 at gmail.com> wrote:

> 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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>
>