[VHFcontesting] VHFcontesting Digest, Vol 159, Issue 23 Rotor Question

[Bill Schwantes]

I just learned the answer to your rotor question myself:

The Yaesu rotors will work on 12 vdc after modification. The mod involves
removing the ac supply, which provides 20 vdc. That supply is replaced with
a DC to DC converter. The one I've seen used is the 12 to 15 vdc model
available from DigiKey.

The rotor runs a little slower but otherwise works fine.

It's good practice to place the converter inside the rotor control box to
minimize radiated noise, run the supply and return leads with a few loops
through a couple of torroids also inside the box and fuse the DC
appropriately. Isolate the DC output return from the converter from chassis
ground.

Good luck, Bill
W7QQ DM75ao
On Mar 20, 2016 10:00 AM, <vhfcontesting-request at contesting.com> wrote:

> Send VHFcontesting mailing list submissions to
>         vhfcontesting at contesting.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
>         http://lists.contesting.com/mailman/listinfo/vhfcontesting
> or, via email, send a message with subject or body 'help' to
>         vhfcontesting-request at contesting.com
>
> You can reach the person managing the list at
>         vhfcontesting-owner at contesting.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of VHFcontesting digest..."
>
>
> Today's Topics:
>
>    1. rotor question (David Vari)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 20 Mar 2016 06:36:37 +0000 (UTC)
> From: David Vari <n2rhl at yahoo.com>
> To: VHF Contesting List <vhfcontesting at contesting.com>
> Subject: [VHFcontesting] rotor question
> Message-ID:
>         <265127517.1406596.1458455797952.JavaMail.yahoo at mail.yahoo.com>
> Content-Type: text/plain; charset=UTF-8
>
> Anyone know of a 110vac rotor that uses a transformer to 12vdc?. I'm
> getting old and lazy and want to start going rover class and too lazy to be
> using armstrong.
>
>
> DAVE - N2RHL
>
>
>
> ------------------------------
>
> Subject: Digest Footer
>
> _______________________________________________
> VHFcontesting mailing list
> VHFcontesting at contesting.com
> http://lists.contesting.com/mailman/listinfo/vhfcontesting
>
>
> ------------------------------
>
> End of VHFcontesting Digest, Vol 159, Issue 23
> **********************************************
>