Man, I went through all that HAM-2 indication stuff big time. First, after getting it and the KT-34A on the tower back around 2000, I found the indication not working right, and now just a couple months ago trying to fix that issue and do general maintenance before trying the rotator again. (This time to be near ground level.) 

I'd assumed I had messed up the connections of the 8-wire cable at the rotator's TB, but no - it was an internal problem.

The schematic really messes with my  mind as it uses ground as the return conductor for the pot wiper. I never found a for-sure smoking gun for the problem, but there are some sliding contacts that perhaps had intermittent high resistance. Anyway, after a lot of cleaning it seems to work OK.

Overall, they built those things hell-for-stout back around fifty years ago,. It clanks like a Caterpillar tractor, but will still get up and go when I push the button.

73

Nick, WA5BDU

On Wed, Mar 20, 2024 at 6:59 PM Dennis Schaefer <dennisw5rz@gmail.com> wrote:
My rotator quit indicating.  It rotates, but the pot in the motor unit has opened up.  I can run outside and see which way it is pointing, but that isn't very elegant, especially since my back and neck are still a little messed up.  I need a way to temporarily tell the direction until I get it fixed. 

I thought about a camera, but the way our house is arranged, the only window I can put one in faces West and gets direct sun into the lens several hours a day.  Its a cheap camera, and it might not hurt anything, but it would make the camera unusable for that time.  I could probably get an outdoor-rated camera and point it somewhere out of direct sun.  That's the only real solution I can think of.

The antenna and rotator are on a Hazer that only comes down to the garage roof.  I can't climb on the roof anymore, so I think the Hazer is going to go away in favor of a more standard configuration.  Someone who knows way more than I do is coming by later in the week and will advise me. 

I will probably put the Force-12 C3 back up but I sure wish there was something I could do to make it work better, or at least have a better SWR, on 12 meters.  I guess a QRO antenna tuner would be the best option.  The 4.5 SWR on 12M doesn't make the amp very happy.  I have a Dentron tuner that is stout enough, but it does not have a bypass switch.  It would probably be easy to rig something with two switches, but that would have the possibility for accidentally running power into an open feed would always be there.  The C-3 has two direct coupled elements for 10 meters, and one is for operating FM above 28.9 Mhz.  I wish I knew what would happen if I extended that element to make it resonate on 12 meters.  I plan to get help to get this all done in one shot, so I don't have the luxury of time for antenna experimentation. 

Ideas or comments are welcome!

73,
Dennis
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