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section 5


The KWM-2 anD KWM-2A transceivers are capable of covering any frequency within theranges of (3.4 to 5.0 MHz and 6.5 to 30.0 MHz. With crystals furnished, they cover the entire amateur bands of 80, 40, 20, and 15 meters, the 28.5- to 28.7-MHz portion of the 10 meter band and WWV at l5.0 MHz. The KWM-2 is equipped with 14 crystal sockets that are selectable frtom the front panel and provide 14 operating bands, each 200 kHz wide. The KWM-2.A differs only in regard to the number of crystal sockets furnished, the method of switching crystals, and slight eleetrical and mechanical differences related to crystal switching. It is equipped with an extra crystal-mounting board that doubles the number of selectable crystal sockets. Crystals for added coverage may be plugged into spare sockets in either transceiver, or crystals for other bands may be substitutes for those furnished.


Either transceiver requires a power sullply such the 516F-2 or PM-2 for fixed-station operation. It consumes approximately 190 watts of power from the line in receive function and aproximatcly 430 watts on peaks in transrnit function The transceiver may be operated mobile by using a power supply such as the MP-1 for 12-volt dc operation or a 516E-2 for 24- to 28-volt operation. In mobile operaion the transceiver requires 800 volts dc at approximatcly 175 mA 275 volts dc at approximately 210 mA; a bias supply adjustable betwecn -60 and -80 volts; and 6-, 12-, or 24-Volt dc filament supply at 11.0, 5.5, or 2.75 amperes respectively. Any high-impedance crystal or dynarnic microphone may be used. A 4 ohm speaker is required. The antenna and feed system must present a 50-ohm load with swr not execeding 2.0 to 1.

Frequency range...............










Mode ..............................

Type of service.................

Power consumption from
ac line.............................

3.4 to 5.0 an 6.5 to 30.0 MHz. With crystals furnished, bands are as follows:

80 meters: 3.4 to 3.6 MHz, 3.6 to 3.8 MHz, and 3.8 to 4.0 MHz.

40 meters: 7.0 to 7.2 MHz and 7.2 to 7.4 MHz

20 meters: 14.0 to 14.2 MHz, 14.2 to 14.4 MHz, and 14.8 to 15.0 MHz (WWV).

15 meters: 21.0 to 21.2 MHz, 21.2 to 21.4 MHz, and 21.4 to 21.G MHz.

10 meters: 28.S to 28.7 MHz.

Single sideband (either sideband selectabie) or CW.

SSB-continuous; CW 50% duty cycle.

RTTY-continuous with a small blower directed at the power amplifier cage

190 watts in receive function.430 watts peak in lock -key.290 watts in voice transmit.

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