Sounds like the potentiometer inside the rotor housing has died, a
common thing with these rotors.
IIRC, it's a 500 Ohm wire-wound pot, with the winding connected between
pins 3 and 7, and the wiper tied to the ground pin, #1.
You can get a manual for it here:
http://www.hy-gain.com/man/pdf/HAM-IV
Jim, Scott and Brad,
Thank you all so much for the prompt replies! You have provided the exact info
I need as to diagnostics to perform before doing any "real" work becomes
necessary!
Thanks again and I will update you when the problem has been pinned down.
Best 73s
Craig
N6RSX
From: Scott
- Original Message -
From: "D. Craig Fox"
To:
Sent: Wednesday, January 05, 2011 9:26 PM
Subject: [amsat-bb] Ham IV rotor problem
> Greetings and happy new year to my fellow sat-ops. I thought I would try
here before searching the entire ‘net, for some tips in trouble shooting a
rotor p
, 2011 3:59 PM
To: D. Craig Fox
Cc: amsat-bb@amsat.org
Subject: [amsat-bb] Re: Ham IV rotor problem
Sounds like the potentiometer inside the rotor housing has died, a common
thing with these rotors.
IIRC, it's a 500 Ohm wire-wound pot, with the winding connected between pins
3 and 7, and the
Thanks again to all for the useful suggestions.
LRD- I hope you are wrong! hi
I will report back.
73s
Craig
N6RSX
NOTICE: This communication may contain privileged or other confidential
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Hi Craig,
I've attached a copy of the HamIV manual. Let me know if you get it OK. It
has some troubleshooting info towards the back.
>From your problem description, my bet is that the sweeper arm on the
>potentiometer inside the rotor is no longer making contact. I've had several
>wear o
: Ham IV rotor problem
Hi Craig,
I've attached a copy of the HamIV manual. Let me know if you get it OK. It
has some troubleshooting info towards the back.
>From your problem description, my bet is that the sweeper arm on the
potentiometer inside the rotor is no longer making contact.
