K3MSB
U.S. Army Signal Corps T-240/SRT-10 CW/AM Transmitter
Usage: WW II through mid 1960s
There is not a lot of information available about this transmitter which was part of the AN/SRT-10 system. It seems to have served in Army maritime service from WW II through the mid 1960s.
From TM-11-837 July 1951 issue:
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“This manual contains instructions for the installation, operation, maintenance, and repair of Radio Transmitting Set AN/SRT-10 and Radio Transmitter T-83/SR. Radio Transmitting Set AN/SRT-10 consists of Radio transmitter T-240/SRT-10, Power Supply PP-462/U, and Motor Starter RE-79/SRT-10. Radio Transmitter T-83 consists of a transmitter, a power supply, and a converter starter box”. |
“Radio Transmitting Set AN/SRT-10 and Radio Transmitter T-83/SR are 50-Watt telephone and telegraph marine radio transmitters designed for use on small ships. Either c-w (continuous wave) or phone transmission is available on any of five preset channels in the frequency range between 1,700 and 8,700 kc (kilocycles)." |
“Each station may transmit on any one of five channels, to a distance of approximately 25 miles. Two-way communication may be established between ships or between ship and shore stations by using a single channel or by using two channels. Hence, each station may operate in the same tactical net or in several nets and in liaison channels according to the communications plan.” |
From a 2013 correspondence with Robert Downs WA5CAB: "T-83/SR was covered by TM 11-837,
05/26/45. According to DA PAM 310, the 1951 edition (which I don't have)
also covered T-240/SRT-10. T-83/SR is listed in the 1950 TM 11-487A. But not
AN/SRT-10. Both are listed in 1957 and only the latter in 1964. "
From a 2013 correspondence with Paul Thekan N6FEG: “I have the WW2 version of the xmtr with power supply and the associated receiver. These were used , as I was told, for use at ship harbors by the Army. My friends brother during the war operated one on board a anchored ship outside a harbor here in the states on the east coast during the war.”
My particular units were produced for a 1950 Army order by the A. F. Smuckler & Sons Co.
By the way, these units are heavy. The transmitter weighs 127 pounds and the power supply weighs 108 pounds!
T-240/SRT-10 Radio Transmitter - Serial Number 63
Power Supply PP-462/U -- Serial Number 39
Copyright (c) Mark S. Bell 2017 - 2020
