Navy Radio - Puzzlers
Equipment I have questions about

Please send me e-mail if you have any info about these items - Thanks!

Click on any photo to enlarge

Any info or photos on the following Navy prototype or limited use equipment greatly appreciated

Radio Transmitting Set, AN/URT-9 (XN-1); Federal Telephone & Radio; NAVSHIPS 91846, 1953
(AN/URT-8 is related)
Radio Transmitting Set, AN/URT-15 (XN-1) - Manson Laboratories; NAVSHIPS 3535, 1960
Radio Transmitting Set, Model AN/WRT-4 (XN-1) - Hoffman Electronics; NAVSHIPS 93549, 1960
Radio Modulator, Models MD-150 (XN-1)/SRT and MD-150/SRT - Dumont Airplane & Marine Instruments; NAVSHIPS 93113, 1958
Power Supply, PP-1163 (XN-2)/URT - Federal Telecommunication Laboratories; NAVSHIPS 92529, 1955
Keyer, KY-43/URT - Munston Manufacturing & Service; NAVSHIPS 91138, 1948
Radio Receiving Set, Model AN/URR-30 (XN-1) - National; NAVSHIPS 91947, 1953 (R-571/URR-30)
Radio Receiving Set, Model AN/SRR-16 (XN-1) - Radio Corporation of America; NAVSHIPS 92974, 1956
Radio Receiving Set, Model AN/BRR-3 (XN-2) - ITT Laboratories; NAVSHIPS 93439, 1959
Radio Receiving Set, Model AN/BRR-3 (XN-1) - Collins Radio; NAVSHIPS 93385, 1959
Control Monitor Group, Model AN/FRA-11 - Charleston Navy Yard; NAVSHIPS 92273, 1954
Modulator Power Supply Group, AN/FRA-16 - Lewyt Manufacturing; NAVSHIPS 92662, 1956
Transmitter-Teletype Writer Control Unit, Type C-492/SG - Northeastern Engineering; NAVSHIPS 91108, 1948
Controls transmitter off-on, carrier off-on, and transfer of teletype to transmit or receive, 3.88 Lbs, Draws power from teletype local loop.

What is it??? Some sort of HF receiver system with panadaptors? 4 units showed up on ebay - one 200-500kc, the others 2-4, 4-8, 8-16 mc - those numbers are from memory - it was something like that? Is it a Navy system? Army, Air Force, or AFSAV (NSA)? Please send me e-mail if you have any info

Mars Electronics - model RC-288A SSB converter. Similar in function to a CV-157/URR. Was there ever a military version of this??? I need a manual, documentation, info, etc. Link to 1963 ad - a modest $2825.00