The AM Forum
December 07, 2024, 06:54:23 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Calendar Links Staff List Gallery Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: RCA Global on Guam  (Read 2949 times)
0 Members and 1 Guest are viewing this topic.
wa3dsp
Member

Offline Offline

Posts: 297


WWW
« on: October 04, 2024, 10:56:29 PM »

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.


* scan0023.jpg (825.52 KB, 1968x1800 - viewed 134 times.)

* scan0024.jpg (1021.76 KB, 1968x1820 - viewed 137 times.)
Logged
W7TFO
WTF-OVER in 7 land Dennis
Contributing
Member
*
Offline Offline

Posts: 2496


IN A TRIODE NO ONE CAN HEAR YOUR SCREEN


WWW
« Reply #1 on: October 05, 2024, 09:51:41 AM »

That is a really neat transmitter.

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

73DG
Logged

Just pacing the Farady cage...
aa5wg
Member

Offline Offline

Posts: 450


« Reply #2 on: October 05, 2024, 02:25:36 PM »

Looking forward to reading your military transmitter experience.

73,
Chuck
Logged
wa3dsp
Member

Offline Offline

Posts: 297


WWW
« Reply #3 on: October 05, 2024, 04:02:10 PM »

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.
Logged
kb3ouk
Member

Offline Offline

Posts: 1640

The Voice of Fulton County


« Reply #4 on: October 06, 2024, 09:14:41 AM »

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.
Logged

Clarke's Second Law: The only way of discovering the limits of the possible is by venturing a little past them into the impossible
WB6NVH
Member

Offline Offline

Posts: 272


WWW
« Reply #5 on: October 13, 2024, 11:46:11 PM »

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.
Logged

Geoff Fors
Monterey, California
wa3dsp
Member

Offline Offline

Posts: 297


WWW
« Reply #6 on: October 14, 2024, 03:39:00 PM »

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.

Logged
kb3ouk
Member

Offline Offline

Posts: 1640

The Voice of Fulton County


« Reply #7 on: October 14, 2024, 09:22:20 PM »

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
Logged

Clarke's Second Law: The only way of discovering the limits of the possible is by venturing a little past them into the impossible
Pages: [1]   Go Up
  Print  
 
Jump to:  

AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
 AMfone © 2001-2015
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Page created in 0.05 seconds with 19 queries.