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Winged Emblem COLLINS 312B-4 STATION CONTROL WATT METER, SPEAKER, PHONE PATCH
$ 102.96
- Description
- Size Guide
Description
Winged Emblem COLLINS 312B-4 STATION CONTROL WATT METER, SPEAKER, PHONE PATCH. Unit is in Nice Condition Accept for a toggle switch instslled on the to back right side of the unit as can be seen in photos, not sure what the mod is but you can see the circuit the toggle switch is connected to . Condition is “Used”.HE COLLINS 312B-4/5 STATION CONTROLThe 312B-4 and 312B-5 Station Controls. Contains a directional coupler and wattmeter, a speaker, a phone patch, and appropriate switching circuitry. The same types of directional coupler and wattmeter, phone patch, and speaker are used in both the 312B-4 and 312B-5. In addition, the 312B-5 contains an auxiliary variable frequency oscillator to provide separate transmit and receive frequencies when used with the KWM-2 or KWM-2A Transceivers.The wattmeter indicates power levels within the ranges of 0 to 200 or 0 to 2000 watts, forward or reflected. It is accurate over the range of 2 to 30 MHz, but should not be used on higher frequencies. The phone patch includes circuitry which allows VOX phone patch operation. It can also be switched manually if desired. The vfo in the 312B-5 is the same as that used in KWM-2/2A and S/Line equipment. Switching circuits are provided to allow operation of KWM-2/2A Transceivers on different transmit and receive frequencies or transmit-receive operation on the same frequency using either vfo.312B-4/5 SPECIFICATIONSDIRECTIONAL COUPLER AND WATTMETER Frequency range ….. 2 to 30 MHz. Impedance ……….. 52 ohms unbalanced Wattmeter scales …. 200 watts, forward
2000 watts, forward
200 watts, reflected
2000 watts, reflectedSize ……………. 10-3/4″ w x 7-1/2″ h x 11-3/4″ d including feet Weight ………….. 8-1/2 Lb Maximum power ……. 2000 watts forward power Power loss ………. Less than 0.1 percent Introduced SWR …… Less than 1.05:1, 2 to 30 MHzPHONE PATCH Input impedance ….. 600 ohms Output impedance …. 600 ohmsPM SPEAKER Impedance ……….. 3 to 4 ohms
Size ………… … 5 by 7 inchesVFO IN 312B-5 Frequency range ….. 2.5 to 2.7 MHz.Calibration accuracy. Within 1 kHz after midband calibration.Drift …………… Less than 100 Hz after 30-minute warmup.Dial backlash ……. Less than 50 Hz. Power ……….Supplied by KWM-2 or KWM-2A transceiver PS.