32V-1
Collins 32V-1 CW and AM transmitter. Tubes: 4D32, 807's and a 6SL7. The output is 75 to 115 watts on the 10 through 80 meter bands.
Supplementary photos

51S-1
Collins 51S-1 HF receiver.
Supplementary photos

75A-1
Collins 75A-1 HF ham band receiver.
Supplementary photos

75A-4
Collins 75A-4 - ham band shortwave receiver for 160, 80, 40, 20, 15, 11, and 10 meters. Double conversion; precise dial calibration and high stability provided by the permeability tuned, hermetically sealed Collins VFO and the crystal controlled first injection oscillator; and ideal selectivity produced by Collins Mechanical Filters. AM, CW or RTTY.
Supplementary photos

310B-3
Collins 310B-3 RF Exciter. This unit uses plug-in coils for band switching. It employs a type 70E-8 PTO and 2E26 RF amplifier tube and delivers 10 watts RF output. Production year: 1947
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CV-157
CV-157 - SSB converter designed for use with the R-390/R-390A receiver, with 44 tubes. Weight is 100+ lbs.

KW-1
KW-1 Collins amateur transmitter. Vfo-controlled, bandswitched, AM and CW on 160, 80, 40, 20, 15, 11 and 10 meters. Input is 1000 watts and 500 watts on the 160 meter band. KW-1 is self-contained in a cabinet 28 inches wide, 18 inches deep and 66-1/2 inches high. Production year: 1950.
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R-388
Collins R-388 is a 30 band receiver that covers 540 khz to 30.500 mhz. The receiver will readout out to 1 khz for extremely good frequency accuracy. The band width ranges from .2khz to 6 khz in 5 steps. The unit is extremly stable. It is designed to receive AM/CW/MCW, you can receive SSB with turning the gain control down. The receiver is the military equivalent to the Collins 51J3 commerical receiver except it is built to military specifications.
Supplementary photos and link to R-388 page.

R-390A
R-390A receiver operates from 0.5 MHz through 32 MHz and is continuously tunable in 32 bands. It has six IF bandwidths designed to accommodate CW, AM and RTTY signals. The R-390A was designed by Collins and built by Collins and many others. It is certainly one of the most well designed receivers ever built.
Supplementary photos and extensive (linked) information.

R-391
R-391 receiver tunes from .55 - 32 Mhz, in 32 1Mhz bands; Pre-settable frequencies locally or remotely chosen and tuned by a complex set of gears, cams, and clutches driven by a 28VDC motor. "Repeatability" - the radio's ability to return to a pre-set frequency - is within 300 cycles (usually better). The radio uses double conversion for the lower 8 bands; and triple conversion for the upper 24 bands. The R-391 uses variable passband tuned IF which allows selectivity (the ability to tune stations apart) to be varied from wide for good fidelity - to very narrow -allowing maximum separation of stations. R-391 can also be operated from 28VDC by replacing the AC power supply module with the appropriate Dynamotor module.
Supplementary photos