[Milsurplus] R-366
WF2U
[email protected]
Tue, 13 Jan 2004 17:43:35 -0500
Bob,
Here are my observations and information on the R-366/TRR-5 receiver
The R-366 is a decent receiver. It's a nice set with great, powerful audio
for shortwave broadcast listening and of course, for AM reception on the ham
bands. It's fairly stable, will receive SSB after a warm up period. The
original LS-171/U speaker is an excellent sound reproducer and almost as
heavy as the radio itself ;-) .
You'll have to get used to the gearing of the dial mechanism: the dial
rotates in the opposite direction from the tuning knob.
The receiver was a Navy contract from 1949 and was manufactured for
something like 3-4 years. The contract number is N0bsr-43229 dated 15 March
1949. Here is the receiver description from my NAVSHIPS 91454(A) manual. and
the receivers were manufactured by Espey Manufacturing Company, Inc. in New
York, NY. My R-366 is from 1953. The receivers were made for the US Marine
Corps use.
Here is the receiver description from my NAVSHIPS 91454(A) (BuShips 1 May,
1951) manual. - I scanned a few pertinent sections from it:
Purpose
a. Radio Receiving Set AN/TRR-5 is a general purpose receiving set designed
for use as an entertainment unit or auxiliary communications receiver. It
may be used at shore stations or on shipboard whenever a 60 cycle 115V AC
voltage is available. It is a locally controlled, 16 tube superheterodyne
with a frequency range of 540 to 30,000 Kilocycles covered in five bands.
It can be used on either CW (continuous wave) or MCW (continuous waves
modulated with tone or voice) signals. The receiver is capable of delivering
5 watts of audio power to the loudspeaker with less than 5 percent
distortion. The equipment is ruggedly constructed for use under adverse
conditions and is complete except for headphones and antenna.
b. Radio Receiving Set AN/TRR-5 consists of the following components and
accessories: Radio Receiver R-366/TRR5, Loudspeaker LS-171/U, Case CY-851/
TRR-5, transportable group
maintenance parts, power cable, speaker cable and connectors for antenna
input, scanning output, and audio output.
5. ELECTRICAL CHARACTERISTICS.
a. FREQUENCY RANGE.-The receiver has a working frequency range of from 0.54
to 30 megacycles (mc) without hiatus.
b. NUMBER OF BANDS.-Five bands.
c. RANGE OF EACH BAND.
1) Band A 13 to 30 MCs
2) Band B 6 to l4 MCs
3) Band C 2.7 to 6.5 MCs
4) Band D 1.3 to 3 MCs
5) Band E 0.54 to 1.3 MCs
ACCURACY OF MAIN TUNING DIAL CALIBRATION.-? 1 percent.
e. INTERMEDIATE FREQUENCY. -455 kc;
f. IMAGE REJECTION.-5 to 80 decibels.-{db)
g. INTERMEDIATE FREQUENCY REJECTION.- 65 db.
h. SIGNAL TO NOISE RATIO (MCW).-10 db.
i. SIGNAL TO NOISE RATIO (CW).-20 db.
j. SENSITIVITY (MCW).-<10 micro-volts (uv).
k. SENSITIVITY (CW).-<5 uv.
1. SCANNING CHANNEL SENSITIVITY.-10 uv.
m. AUDIO CHANNEL OUTPUT.- 6 milliwatts (mw) with respect to a 600-ohm load
at the line output terminals of the receiver.
n. SCANNING CHANNEL OUTPUT.-100 uv with respect to a 70-ohm load at the
scanning output jack.
o. MODULATION FREQUENCY.-l000 cycles per second (cps).
p. BEAT NOTE FREQUENCY. l000 cps.-
q. AUDIO OUTPUT.-The audio input is designed to work into the following:
(1) 600-ohm line
(2) Loudspeaker (6 ohms)
(3) One set of headphones with 600 ohms impedance.
r. MAXIMUM UNDISTORTED OUTPUT.
(1) 5 W into the 600 ohm load at the line terminals
(2) 5 W into the loudspeaker
(3) 6 mW into the headphone terminals
I hope this info is useful to you.
73, Meir WF2U
Gowensville, SC
-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Bob Wilder
Sent: Tuesday, January 13, 2004 12:42 PM
To: [email protected]; [email protected]
Subject: [Milsurplus] R-366
A R-366 receiver has been donated to the LST-325. Does anyone know where we
can find
the specs on this receiver?
TIA
Bob Wilder
6032 Idlemoore Court
Theodore, AL 36582-4117
251-653-5274
http://home.earthlink.net/~bwild
Asst USAF State MARS Director- Alabama
AF2HD/AFA2HD