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Author Topic: HAM-IV box with a Tailtwister rotor??  (Read 1962 times)
N3RU
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Posts: 4




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« on: January 07, 2001, 10:22:30 PM »

I run a ham station at a Boy Scout Camp in eastern PA.  Someone
gave us a HAM-IV rotor box and I want to use it with a Tailtwister
rotor.  However, the HAM-IV control box has a 8 pin plug and the rotor
has a 8 conductor terminal block. How do the pins on the
HAM-IV box plug match up to the terminal block on the rotor?

Thanks.

73, Bob Zajko  N3RU
KB3BOY Trustee
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K5RG
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Posts: 8


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« Reply #1 on: January 14, 2001, 10:45:09 AM »

I remember the Tailtwister as being a ruggidized HAM IV.  Thus I would suspect the terminal block on the control box to be the same as the Tailtwister, where Pins 1 - 4 are the top row numbered left to right looking at the back (Pin 1 closest to the edge in other words). In the Tailtwister rotor the corresponding pins are the same with Pins 5 - 8 closest to the perimeter of the rotor housing viewed from the bottom.  The connections are Pin 1 to 1, etc.  A check from the control box standpoint would be to measure the control voltage (28 VAC ?) between pins 1 and 2 when energized. Pins 1 and 2 on the rotor measure 2.6 ohms.  However I would never trust speculation and would require both sets of documentation before any wiring.  If you can come up with the HAM IV documentation, I can easily supply you with a copy of the Tailtwister documentation.
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