| This Vietnam era military cord switchboard works quite well. It is connected to several phones, CB and magneto. Also one trunk connects to my Mitel SX-100 PBX.
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The jackfield has 30 jacks. All have a selector switch for M, C, and T. M = Magneto, C = Common Battery, T = ? (does not work with trunk). Jacks 29 and 30 are marked for CO Trunk.
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The case becomes the stand for the switchboard. The small box on the floor is the power and ringing source. I have an external 24 VDC connected to the supply.
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SB-86/P Switchboard, Telephone, Manual
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Manual telephone switchboard, Tactical, Portable, 30 Line, 2-wire, Local battery, 90 VAC 20 Hz ringing, 180 Lbs, TM 11-2134 or 11-4134,
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Major components:
SB-248 Manual telephone switchboard section,
TA-207 Switchboard signal assembly
PP-990 Powersupply (with vibrator ringing generator) |
