Collins 20K AM Broadcast Transmitter

This 1KW AM transmitter was in service in Hot Springs, Arkansas at station KBHS. M.L. Young obtained it for his Hot Springs radio museum when the transmitter was taken out of service, and it lived in ML's museum for many years. The three phase powered heavy power supply iron and modulation transformer were discarded when it was placed in the museum as a static display. When ML's health forced him to close his museum his friend James, N5ARW, obtained the transmitter with the intention of restoring it. Here's a note he posted to the CCA mail reflector in August 2001.

I am the happy owner of a 20K transmitter. It is really great with motorized controls for most adjustments. As with most restoration projects, this one is missing a few things. From the cabinet, it is missing the left side panel and the lower rear panel section below the rear doors. It is also missing all the big iron, HV transformer and choke, modulation transformer and choke. It has spent many years of its life as a museum piece and so the heavy iron was not important. I would like to take a shot at getting it working again so please pass along any leads for parts.

It also came without any documentation so I am looking for that too (original or copies). There are some of you who are especially interested in broadcast transmitters and I would appreciate hearing from you an any advise you want offer.

Thanks & 73
James N5ARW in beautiful Hot Springs National Park, AR

James quickly determined that he could not get it into his basement (ceilings and door too low) so he traded it to me for a nice Drake TR-7 transceiver. Since then, it has lived in my shop, where I admire its stately Art Deco profile. I have not done anything with it except accumulate some 220V single phase candidate transformers with the idea when I retired it would be moved to the top of my project list.

Update July 2018: The 20K has found a new comfortable home in North Texas and will live again.