Navy Radio - Puzzlers
Equipment I have questions about

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

What Transmitter Site is this?

What ship is this?

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, AN/WRT-4 (XN-1) - Hoffman Electronics; NAVSHIPS 93549, 1960
• Radio Modulator, 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, AN/URR-30 (XN-1) - National; NAVSHIPS 91947, 1953 (R-571/URR-30)
• Radio Receiving Set, AN/SRR-15(XN-1) - 2-32mc, National; Contract NObsr-63391 (1953) - Prototype for AN/WRR-2 (AN/FRR-59)?
  "The AN/SRR-15 is a general purpose communication receiver for shipboard use having extremely accurate tuning dial and frequency control. A second version will have, in addition, circuits and facilities for reception of single-sideband suppressed-carrier signals."
  "Precision tuning with frequency accuracy determined by 100 kc frequency standard and frequency synthesizer ."
• Radio Receiving Set, AN/SRR-16 (XN-1) - Radio Corporation of America; NObsr-71333 (1956), NAVSHIPS 92974, 1956
  "The AN/SRR-16 is the AN/SRR-13 receiver modified for single sideband capabilities which is accomplished by the use of Radio Receiver R-441A/SRR-13 modified for external frequency control."
• Radio Receiving Set, AN/BRR-3 (XN-2) - ITT Laboratories; NAVSHIPS 93439, 1959
• Radio Receiving Set, AN/BRR-3 (XN-1) - Collins Radio; NAVSHIPS 93385, 1959
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• Control Monitor Group, AN/FRA-11 - Charleston Navy Yard; NAVSHIPS 92273, 1954
• Modulator Power Supply Group, AN/FRA-16 - Lewyt Manufacturing; NAVSHIPS 92662, 1956
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• 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.

Click on any photo to enlarge

CV-2310()/G FSK and DFSK demodulator  -

Looks like an NSA item to me (clues - DFSK, shift freqs, no contract number, & ID tag). Please send me e-mail if you have any info about this unit

Colored cylinders are plug-in filters

Please send me e-mail if you have any info about this unit.

Navy mystery transmitter - kind of like a TBW or GO-9 layout

Mystery SSB receiver - for 2M fixed freq. - who built it? what for? Please send e-mail

What is it? FM test generator - 50-500mc - looks military - please send e-mail if you have an ID and/or info on it.
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What is it? - TONE-VOICE switch housing - about 10" long, 6" wide - the missing switch handle is labeled RECEIVE  - I've seen one somewhere but just can't recall where - some airborne thing? please send e-mail if you have an ID and/or info on it.
Miscellany
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
Hammarlund Variable Capacitor - built like a tank - what was it used for?
	really great bearings and anti-backlash gear
little adjustable trimmer pistons			massive rigid plates

Mars Electronics - model RC-288A SSB converter. Similar in function to a CV-157/URR. Was there ever a military version of this??? Please send e-mail if you have info I need a manual, documentation, info, etc. Price in 1963- a modest $2825.00
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