Episode 9 - Italian "Telefono da campo" D. Mk. VI., 1946

Описание: Visit http://fieldphones.org/episode9/ for additional information.

This Italian field phone is a refurbished British D. Mk. V. The post WWII Esercito di Transizione was equipped with mostly British WWII material. This D. Mk. V. was originally manufactured by the Telephone Manufacturing Company ltd (T.M.C.). The coil is made by Elettrotelefonica Milano, maybe the complete refurbishing has been done there.

The instrument is built into the base of a heavy duty metal box with a hinged metal cover which can serve as rain-cover when the instrument is open. The bell, capacitors and coil are mounted onto a main board which is fixed into the metal box. Two mount screws also make the battery contact. The generator is mounted onto its own board. Where the original British D. MK. V. had the buzzer mounted the Italian refurbished version has a generator installed, and in place of the buzzer key the coil is mounted (The British instrument shared the voice and buzzer coils). The battery compartment takes two 1,5V cells of the British types "X" (dry) or "S" (inert) elements.

Unique feature:
Headset with a foldable metal headband with 4 fold hinges. An unfortunate design choice is that the main rx circuit requires the headset to be connected. If the headset is damaged it must be short-circuited for the instrument to remain functional.

Datasheet:
Size: 260 x 150 x 140 mm
Weight: 5kg
Material: Case: Metal, Handset: Bakelite
Battery: 2x 1,5V
Retrofitted generator
Single bell ringer
Retrofitted voice coil
Bakelite handset with P.T.T. button
Headset with foldable headband

Sources:
http://www.culturaitalia.it/opencms/v...
http://www.culturaitalia.it/opencms/v...
https://en.wikipedia.org/wiki/Italian...
http://www.rcsigs.ca/index.php/Teleph...
http://www.telephonecollecting.org/Bo...

Visit http://fieldphones.org/episode9/ for additional information.