Radio Sets SCR-609-A And -B, And SCR-610-A And -B - TM 11-615 War Department Technical Manual

Section I. DESCRIPTION OF RADIO SETS SCR-609-( ) AND SCR-610-( ) a. Radio Set SCR-609-( ) (fig. 1) is a low- power, frequency-modulated (f-m) set which is designed to provide two-way communication over short distances from a stationary ground position. Power for the operation of the unit is supplied by dry batteries. Radio Set SCR-609-( ) may be converted to Radio Set SCR-610-( ) (fig. 2) by adding the compo- nents necessary for vehicular mounting and operation. Radio Set SCR-610-( ) uses a 6-, 12-, or 24-volt (v) storage battery to supply the necessary power. Figure 3 is an over-all illustration of Radio Set SCR-609-( ). Figure 2. Radio Set SCR-610-( ), ground vehicular b. Throughout this manual empty parentheses ( ) indicate reference to all models of the equipment. Thus, Radio Set SCR-609-( ) refers to SCR-609-A and -B; Radio Set SCR-6KM ) refers to SCR-610-A and -B; Radio Receiver and Transmitter BC-659-( ) refers to BC-659-A, -B, -H, and -J; Remote Control Unit RM-29-( ) refers to RM-29-A and -B; Case CS-79-( ) refers to CS-79-A, — B, and -C; Mast Base MP-48-( ) refers to MP-48 and MP-48-A; Mounting FT-317-( ) refers to FT-317-A and -B; Capacitor CA-403-( ) refers to CA-403-A and -B; Vibrator VB-7-( ) refers to VB-7-A and -B; and Mounting FT-250-( ) refers to FT-250-A and -C. 2. Application of Equipment Radio Sets SCR-609- ( ) and SCR-610- ( ) are complete installations and are not intended or designed for use as part of any other system. 3. Technical Characteristics Transmitter 27.0 to 38.9 me. Receiver 27.0 to 38.9 me.
• Type of Signal emitted F-m voice. Distance range Approx. 5 mi. -section mast Transmitter power output. 1.3 w. Type of receiver F-m superhetero- dyne, crystalcontrolled oscillator. Frequency separation between channels 100 kc. Tube JAN-1LH4 5 Tube JAN-1LN5 (VT-179). iSUPPORTIN channel STRAP Figure d. Radio Set SCR - 60 D-( ), assembled for operation. Transportable, Radio Set SCR-609- ( ) Batteries in Case Receiving r. Battery BA-40; A, Transmitting Batteries BA-39 and BA-40; receiver: A, 1.5 v and B, 90 v; transmitter: A, SCR-610-( ) Plate Supply Unit PE-117-C from 6-v or 12-v storage battery or Power Supply Unit PE-120-A from 6-v, 12-v, or 24-v storage battery. Power Supply Unit PE-120-A, tube complement 1 Tube JAN-1005 Plate Supply Unit PE-117-C, tube complement 1 Tube JAN-1005 nn Not In. both transportable and vehicular applications, 60-v, 30-v internal Battery BA— 41 is required. Power supply, transportable ground station (Radio Set SCR-609- ( ), dry batteries) Receiving: Battery BA-40; A, 1.5 v at 0.94 amp; B, 90 v at 28 ma. (receiver still on) Battery BA-40 (receiver) and Receiver: A, 1.5 v at 0.94 amp; 90 v at 48 ma. Transmitter: A, 7.5 v at 0.3 amp; B, 150 v at 50 ma. in p§ 70 ? ® e ept B tter y BA 41 ar e mounted in case CS-79-( ). The reactance modulator and the transmitter oscillator obtain B voltage through receiver Battery BA-40, thus there is a 20-milliampere (ma) additional dram when transmitter is on. Battery BA-41 is mounted on the receiver -and transmitter chassis and supplies bias for the reactance modulator. Scr-610-( ) Plate Supply Unit PE-117-C operates from a 6-v or 12-v storage battery. Power Supply Unit PE-1 20- A operates from a 6-v, 12-v, or 24-v storage battery. 6.2-v input Receiving: 2.7 amp 12.4-v input Receiving: 2.25 amp PE-120-A, 6-v input Receiving: 3.0 amp. Pe-120-A, 12-v input..

Receiving: 2.0 amp. Pe-120-A, 24-v input..

Receiving: 1.5 amp. Note.

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