RCA Global on Guam

[wa3dsp]

Back in 1971 I was in the Air Force on Guam. While there I utilized my commercial license for the first time working at an HF transmitting station. The station was beamed to Vietnam. The transmitters were independent SSB with two upper and two lower multiplexed channels. Phone calls came in from the US via satellite to Guam and then over HF to Vietnam. I would tune and monitor these transmitters during my shift. I am attaching a photo of the transmitters in hope that someone can tell me a model number. I believe it used two 4CX5000's. The antenna was a large Vee. I have many photos of this site and I plan to write some history about it. Perhaps someone on here may have worked on one of these transmitters or for RCA Global.

[W7TFO]

That is a really neat transmitter.

Yes, do write up that article about your time there, I would love to read it!

73DG

[aa5wg]

Looking forward to reading your military transmitter experience.

73,
Chuck

[wa3dsp]

Just a note that this was not a military station. It was commercial - RCA Global.  I worked there part-time while in the Air Force on Guam.  My boss was Jim Long, who was in RCA Global Administration on Guam for many years.  I have researched RCA SW transmitters, but I have not been able to find a transmitter that looks like these. As I remember, there were several of these transmitters at the facility.

[kb3ouk]

Looks like an RCA SSB-T3, also referred to as a type H or H set. There's one of those in service out at KPH in Bolinas, CA.

[WB6NVH]

As above, you might go to the Maritime Radio Historical Society website and check with them as the KPH station in Point Reyes / Bolinas California was an RCA Global station that had both point to point and maritime CW facilities. A great deal of the transmitter plant (Bolinas) is still there and in use as a museum station.  The transmitter you refer to was, I think, one of the point to point transmitters and most or nearly all the point to point equipment was removed and scrapped to make room for new tenants after the station shut down in 1999 but I think there is at least one still there in the area that survived at the transmitter plant.

[wa3dsp]

I found this on the SSB-T3 -

http://rca.vobj.org/RCA%20Engineer/RCA%20Engineer%20v07/RCA%20Engineer%20v07n5/p12AutryCanto-5KwTransmiter.pdf

But if this is the right transmitter it does not look anything like the one I pictured on Guam.

[kb3ouk]

I found this on the SSB-T3 -

http://rca.vobj.org/RCA%20Engineer/RCA%20Engineer%20v07/RCA%20Engineer%20v07n5/p12AutryCanto-5KwTransmiter.pdf

But if this is the right transmitter it does not look anything like the one I pictured on Guam.

They're calling that an IST-5K in the article.

This is the MRHS' SSB-T3 (first picture)
https://myemail.constantcontact.com/Your-Night-of-Nights-XXIII-Special-Bulletin-is-here-.html?soid=1109843077277&aid=O_5IGlxMuEU

There are several pics of the companion SSB-R3 diversity receiver here
https://myemail.constantcontact.com/Special-Hardware-Issue---MRHS-Newsletter-No--59.html?soid=1109843077277&aid=7vyQfgQJOvw