Radio Receiving Set Type BC-14A

• alternative name: American Marconi || Marconi, American
• Brand: Marconiphone

US Army, covers 200-600m, push-button operated buzzer, catwhisker detector.

The BC-14A Trench Crystal receiver was manufactured for the U.S. Army Signal Corps by de Forest, Liberty Electric, Wireless Specialty Apparatus, General Radio, and Marconi Wireless.

It was part of the SCR-54A artillery spotter outfit. These crystal radios were used to communicate in the WWI trenches by morse code from airplanes using spark transmitters.

The field outfit containing the BC-14A radio was designated Type RC-1, and it was available from the supply sergeant of the artillery battery to which the wireless man was assigned. It consisted of:

• The radio itself
• 1 ST-5 carrying strap
• 2 P-11 headphones
• 4 DC-1 crystals (3 as spares)
• 3 M-14 crystal springs (2 as spares)
• 1 hank W-20 stranded wire
• 2 BA-4 batteries to power the tuning buzzer
• 1 TL-2 screwdriver set to put everything together.

In questo link sono elencati 33 modelli, di cui 33 con immagini e 3 con schemi.
Elenco delle radio e altri apparecchi della Marconi Wireless Telegraph Co. of America