AN/FRD-10 Imperial Beach
thanks to Wullenweber/CDAA home page
Note 1 - While the AN/FRD-10 was primarily used by NAVSECGRU activities for DF, several were also used for general service communications. Two FRD-10's were installed for communications use at Sugar Grove, WV without the DF goniometer. The Imperial Beach, CA FRD-10 was shared by SECGRU and COMMSTA activities.
Note 2 - The CDAA also known as a Wullenweber antenna. The basic principle is that signals from a circular array of antenna elements can be combined with proper phasing to create a high-gain directional antenna which is electrically steerable.
There are lots of photos of FRD-10 antenna systems on the web, but not much info about the inner workings and equipment. Any references, photos, diagrams, etc. would be greatly appreciated.
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AN/FRD-10 Imperial Beach thanks to Wullenweber/CDAA home page |
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AN/FRD-10 COMPONENTS |
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| CU-1280/FRD-10 | 
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Multicoupler - 32 output HF for CDAA use
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manuf Sylvania |
| CU-2282/FRD-10A | need photo | Omnidirectional Combiner | - |
| CU-5069/FRD-10A | need photo | Multicoupler - 32 output HF for CDAA use | manuf by TMC for RCA
article with photos - link |
| PP-3949/FRD-10A | need photo | Power supply ? | - |
| PP-3950/FRD-10A | need photo | Power supply -24vdc, +/- 10vdc | manuf General Dynamics |
| PP-3951/FRD-10A | need photo | Power supply +/- 30vdc | manuf General Dynamics |
| SB-2186/FRD-10A | need photo | Patching Panel, Comm | manuf MVP Micro |
| SB-2187/FRD-10A | need photo | Patching Panel, Antenna | - |
| SB-2188/FRD-10A | need photo | Patching Panel, Antenna | - |
| SB-2202/FRD-10A | need photo | Patching Panel, Comm | manuf MVP Micro |
References
