BELL TELEPHONE MANUFACTURING Co.
(BTMC) ANTWERP
Telephone No. 2528 and 22528

Portable Field Telephone Station
(magneto calling and local battery)
for railways, military, telephony, etc.
No. 22528B

Despite its very compact size, this station includes all the components required for establishing an instant telephone station with magnetic calling and a local battery.

22528B
Portable field telephone set using Telephone No. 2528B for series connection, with polished teak woodwork, nickel-plated metal parts.

Includes a four-wire magnetic generator No. 2012A, special polarised ring No. 2005 (400ohm resistance), induction coil No. 2202A, microphone No. 2256A and a four-conductor power cord No. 2063.

Uses two HYDRA IV dry cell batteries.

Dimensions: 280 x 170 x 150mm.

Taken from the 1910 BTMC Catalogue