Military Wireless in the Midlands Museum Virtual Museum site

The U.S. of A. Section with Canadian section below


NC-100


The National NC-100 receiver, picture left as received, right and below as it looks now. Replaced the ift cans, the mains tranny was u/s so replaced with one from CR100 rx. Re-valved and re-capped. Now set is actually NC-100X as xtal filter also fitted.


PRC-74 & GRC-9


LEFT: US made PRC-74, 15W ssb/cw, 2 to 18MHz.
grc9-amp
RIGHT: The GRC-9 and 100W amplifier set.

BC-223 AND TBX2


LEFT: A very nice addition, the BC223AX transmitter. I'm looking forward to trying this out soon.
tbx2

RIGHT: Recent addition, TBX-2 US Marines set, used on beach landing and the like, very nice little set, easy to operate.

AVR-20 AND AVT-111


Addition to the US section, the RCA AVR-20 receiver, aircraft use, 4 valve. Just acquired, the matching transmitter, AVT111, 4 valve, hf, AM

avt111

Bendix 3810 Aircraft set & AN/URC-101


bendixrxtx urc101

51-J4 AND AR88


The 51J4 receiver, very nice set indeed.
51j4 ar88

Right: The AR-88, this is the D version, there is also the LF version.

PRC-64A


The CIA's PRC64A xtal controlled hf rx/tx, with aerial reels etc.
prc64a

BC-654A AND PRR-9/PRT-4A


LEFT: The BC-654A US military hf set undergoing trials on the operatring bench.
bc654a prr9

RIGHT: PRR-9 receiver, with new battery holder, and PRT-4A transmitter (on let).

NATIONAL 1-10


LEFT: This is the National 1-10 VHF HRO set, 30 -300 Mhz with plug in coils (inside) super regen set, working fine.
hro-110 110restore

Another 1-10 arrived recently but in need of a bit of love. Before and after pictures.

NATIONAL NC-240S AND NC-46


RIGHT: The National NC-2-40S is a nice unit, but differs from the NC shown in Ostermans book, it has a square meter but the round center tuning dial. Anyone know its history ?
nc-2-40s nc46

LEFT: The NC-46 receiver with matching speaker.

SCR-522 AND BC-191


LEFT: A pic of the SCR522 VHF tx/rx as used in WWII fighters, Spit, Hurri, etc. 4 channel xtal controlled, replaced the early hf sets used there.
scr522 bc191

RIGHT: The BIG US BC-191 transmitter...........

APR-4


The APR-4 Search receiver, here is the APR-4 chassis weith an APR-1 tuning head fitted.
apr4rx
Need help, can anyone tell me what the extra little chassis/valve is on this set (left pic) and there's something missing, in yellow circle, probably a cap? (right pic), connects to i.f.t. in the corner.
apr4addon apr4missing

BC-652 AND 6 LINE EXCH


BC-652
6 Line exchange
The BC-652 receiver, hf set, 12 or 24 volt types. Now a 6 line US telephone exchange, compared to the British 10 line unit its somewhat big, but then, it is American... hi.

BC-148 AND BC-470


BC-148. This is one of the earliest mil sets here. Dated 1931 its a most unusual set. Three valve rx, sinlge valve tx, and the aerial was a loop of about 4 ft in diameter. I am in need of an actual aerial unit for this set if anyone has one in their attic.
BC-148
1941 advert showing BC-148
BC-470
BC-470. This is a Direction Finding set, a large loop aerial afixes to the top and can be rotated by using the large handle atop the set. I am looking for info on this set, a circuit or other details.

RA-1 AND WS-48


The Bendix RA1 aircraft set. Very nice receiver to use. Used with the TA12 transmitter.
RA1-B rx
WS 48
The US version of the British 18 Set, the Wireless Set No 48. Man carried, low power. The Canadian version was known as the 58 set.

TCS AND ARC5


A US Navy set, the TCS transmitter, shown here in use at this location. Nice set, under modulated but a few slight mods soon cures that.
tcs
On the subject of VHF, how about these two Command rx's, modded by USAAF in the UK for use as blind landing receivers, 6 to 9 Mhz versions altered to 28-41 Mhz. 28-41
4 to 9 Mhz covered by the Command set transmitters
command
A few more Command sets !
commandshelf
Interesting ARC-12 unit, holds the R19 and T363 VHF units with controls on the front. Believed to have been used in helicopters.
arc12a arc12b
arc12e arc12c

ZB AND GF-11


Two US sets now, tuners, VHF, used in aircraft, in front of
a general coverage hf set. The ZB range of tuners.
zb_rx gf11
Right: 2 similar looking sets, the top one, black, is the GF11 transmitter, aircraft use, hf, plug in coil pack, needs pairing with the RU-19 receiver. The bottom one, alum, is the BC-AS-230, part of the SCR-AR-183 and needs the BC-229 receiver. If you have either rx available, please get in touch.

BC-222 AND TS-184


BC-222
TS-184
BC-222 vhf set, man carried, beach heads etc. TS-184 test set, complete in transit case.

BC-609 AND ARR-7


BC-609
ARR-7
The BC-609 test set, vhf, valved type absorption meter.
After surviving a dropping by good old Parcelforce and two weeks of restoration following we have the ARR-7 receiver, a very early scanner. The tuning can be motorised to sweep between two limits, searching the band for unknown transmissions. Used by USAAF to search for enemy signals.

ASB-4 AND BC-611


Early radar receiver, around 400 Mhz or so, a recent donation to the collection.
asb4 bc611
RIGHT: The often quoted "first ever walkie talkie" the BC-611 HF portable set.

HRO AND RBJ


The good old HRO receiver, many a shortwave listeners first set. Used throughout the war, and long after. Many variations made but all had the same unique dial and detachable coil pack. Here an HRO and the US Navy RBJ sets
hro rbj


SP-600 AND BC-620


The SP-600 rx in its US Army colours. Interesting set, though it lacks origonality as every component has been changed in this example.
sp600 bc620
RIGHT: The US BC-620 set, the mobile 10 Mtr set, batteries carried in a similar sized box underneath the unit. Jeep mounted or could be carried into the field for forward OP use.

BC-603 AND BC-684


LEFT: The SCR combo, BC-603 (right) and BC-684 (left), there were two ranges for this station, and this is one unit from each, the actual companion sets are near identical.
scr beacon
RIGHT: A Beacon set, used to guide in Para troops and drops.

R5032A AND RME-69


LEFT: The US made version of the British R1132 vhf control tower receiver.
r5032a rme69
RIGHT: The RME-69 hf receiver and preselector, DB-20.

RT-524 AND I-129B


LEFT: The RT-524 VHF transceiver, fitted inside the Hummer for instance, used in Nam.
rt524 wavemtr
RIGHT: Simple Wavemeter, just tuned circuits, I-129 B apparently.
i129


AN/CRC-7 RT-159 SAR SETS


The AN/CRC-7 SAR VHF transceiver, 140 MHZ, AM, 50mW output, entered service 43, still used in Nam. When power was applied amazingly the set still worked fine.
ctc7 rt159
The RT-159 SAR set, replaced the CRC-7, tx and rx on 121.5 or 242 MHz, saw action in Korea and Vietnam.

BC-221



Just how many BC-221's are there out there ?. Here's 4.
bc221s


CANADIAN SETS

WS-58


A rather odd WS58, plated as Canadian Signals Experiental Establishment. It has odd connectors for mic/phones and has a built-in calibrator.
ws58f

My standard WS58 Mk1*, the normal version seen.
ws58e

Close up of the id plate.
ws58a ws58b
Close up of the calibrator part, knob first then the internal crystal and switch.
ws58d ws58c
The shock mountings, on the side in this set.

Canadian Marconi Co, CP34 hf manpack, 2 to 18Mhz, AM/USB/LSB. 20w PEP.
cp34a cp34b

CPRC-26 and WS-9


cprc26
LEFT: The Canadian CPRC-26 VHF transciever, later day version of the WS88 basically, very nice construction inside though.


RIGHT: The WS-9 receiver section. For runner to the WS-52.
















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