Schematic for HollyAnne EAS Program Switch

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kkiddkkidd
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Schematic for HollyAnne EAS Program Switch

Post by kkiddkkidd »

Hi all,

Does anyone happen to still have a schematic for those old junky HollyAnne program switches? I have a client (elderly engineer / owner / friend) who has a pair of them being controlled by a DASDEC but one has stopped interrupting the program audio. IIRC, they aren't anything more than a couple of DPDT relays but he is having a hard time trying to understand how they work and wants to try to revive it himself.

Thanks,
--
Kevin C. Kidd CSRE/AMD
WD4RAT
AM Ground Systems Company
http://www.amgroundsystems.com
KK Broadcast Engineering
http://www.kkbc.com

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Dale H. Cook
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Re: Schematic for HollyAnne EAS Program Switch

Post by Dale H. Cook »

I had a couple of those POS Hollyanne systems back in the day, and still have all the documentation that I ever saw in PDF, but AFAIK they never released schematics and I don't have any.
Dale H. Cook, Contract Engineer, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcityeng/index.html

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kkiddkkidd
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Re: Schematic for HollyAnne EAS Program Switch

Post by kkiddkkidd »

Dale H. Cook wrote:
Mon Feb 10, 2020 7:09 am
I had a couple of those POS Hollyanne systems back in the day, and still have all the documentation that I ever saw in PDF, but AFAIK they never released schematics and I don't have any.
POS I agree... I bought a dozen of those things at a deep discount and sold them to my clients at a good price and regretted it for years... I still have a laptop around somewhere with the programming software.

The WX receiver (a rebranded Hamtronix IIRC) and the program audio switches were the best parts of the system. My friend has tried to run the switches off of 24vdc and I think has probably burned out the relays. IIRC, the relay output to them was 9 or 12v.

Later,
--
Kevin C. Kidd CSRE/AMD
WD4RAT
AM Ground Systems Company
http://www.amgroundsystems.com
KK Broadcast Engineering
http://www.kkbc.com

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Dale H. Cook
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Re: Schematic for HollyAnne EAS Program Switch

Post by Dale H. Cook »

kkiddkkidd wrote:
Mon Feb 10, 2020 1:30 pm
IIRC, the relay output to them was 9 or 12v.
It was 9V, to match the supply in the HU-961.
Dale H. Cook, Contract Engineer, Roanoke/Lynchburg, VA
http://plymouthcolony.net/starcityeng/index.html

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kkiddkkidd
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Re: Schematic for HollyAnne EAS Program Switch

Post by kkiddkkidd »

Dale H. Cook wrote:
Mon Feb 10, 2020 6:53 pm
kkiddkkidd wrote:
Mon Feb 10, 2020 1:30 pm
IIRC, the relay output to them was 9 or 12v.
It was 9V, to match the supply in the HU-961.
Thanks for confirming. I bet that he has burned out the relay coils.

Regards,
--
Kevin C. Kidd CSRE/AMD
WD4RAT
AM Ground Systems Company
http://www.amgroundsystems.com
KK Broadcast Engineering
http://www.kkbc.com

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Deep Thought
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Re: Schematic for HollyAnne EAS Program Switch

Post by Deep Thought »

kkiddkkidd wrote:
Tue Feb 11, 2020 9:30 am
Dale H. Cook wrote:
Mon Feb 10, 2020 6:53 pm
kkiddkkidd wrote:
Mon Feb 10, 2020 1:30 pm
IIRC, the relay output to them was 9 or 12v.
It was 9V, to match the supply in the HU-961.
Thanks for confirming. I bet that he has burned out the relay coils.

Regards,
If they are 9 volt and he applied 24 for more than a few seconds, that is pretty much a certainty.
Mark Mueller • Mueller Broadcast Design • La Grange, IL • http://www.muellerbroadcastdesign.com

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