Equipment and Accessories
The BC-375E is a liason transmitter, used on medium and large aircraft during World War 2. The BC-375E is wired for 24/28 DC volts aircraft power systems compared to the ground based BC-191F which was 12/14 DC volts.
It was purchased as a basic carcase, missing the top, sides, valve cover and volt meter. I made some flat sheet aluminium sides, front and top, but later found some original top and sides on Ebay. I bought some plugs to supply power and got the power light, amp and volt meters working. It is fitted to an original and rare FT-151 shock mount in the Dodge radio bay.
The BC-348 is a compact American communications receiver, which was mass-produced during World War II for the U.S. Army Air Force.
The BC-348 is the 28 volt dc version of the 14 vdc powered BC-224. Designed
as receivers for use in larger aircraft such as the B-17 and B-24, they were initially paired with a BC-375 transmitter in the SCR-287-A system.
The TU-5-B Tuning Unit was part of the BC-375 transmitter / SCR-287-A radio system, with a frequency range of 1500 to 3000 KC. There is a similar TU-9-B 7700 to 10000 KC tuner in the BC-375 transmitter.
The BC-221 is housed in either black-wrinkle finished aluminum alloy or matt-olive wooden cabinet.Power was supplied either from batteries or a mains power supply in a lower compartment accessible from the rear of the cabinet. A spare crystal was kept on the chassis itself in many models.
The control panel is covered by a hinged lid that contains the
Calibration Book. Each BC-221 was individually calibrated and the calibration book marked with the serial number of the unit.
BC-906 test equipment, is an absorption-type VHF frequency meter. It was used for determination and setting of the frequency of the IFF-transponder equipment.
The measuring frequency is in the 150 to 225 Mhz range. On the front of the unit is a micro-ammeter which shows a minimum reading when the instrument is in resonance with a signal source.
American made M8 break action pyrotechnic pistol. The sheet metal frame is stamped with 'M S.W.C. US PROPERTY PISTOL PYROTECHNIC M-8' within a triangle.
The barrel has four rectangular studs at the muzzle for fitting into a
bayonett mount in the fuselage of an aircraft. There is a pull clip on the top to open the breech.
|C-2 Inter Aircraft Control Signal Lamp||Air Ministry 5A/760 Aldis Lamp|
|Air Ministry 5A/2334 Aldis Lamp||Air Ministry 5A/2334 Aldis Lamp|
The LS-3 loud speaker is a permanent-magnet type speaker. An impedance-matching transformer mounted inside the case serves to match the output impedance of the radio reciver to the impedance of the voice coil.
This is the classic Army Air Force jack box, with volume control and various functions selectable by the crewman. COMP was for radio compass, INTER for interphone. COMMAND & LIAISON for the radios. Not all the crew positions could transmit via the radios, but they all could listen to the various radios listed on the switch. The "CALL" position was spring loaded to return to the interphone position.
Speaker and Microphone installed