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Table 2-1 Crystal. Supplied in the KWM-2/2A Transceiver
KWM-2/2A
BANI)-SWITCH
SETTING
KWM- 2/2A
OPERATING FREQUENCY
(MHz)
CRYSTAL F'REQUENCY
(KHz)
1A
2A
3A
1B
2B
3B
1C
2C
3C
1D
2D
3D
1E
*2E
3E
3.4
3.6
3.8
7.0
7.2
14.0
14.2
14.8
21.0
21.2
21.4
28A
28B
28C
3.4 to 3.6
3.6 to 3.8
3.8 to 4.0
7.0 to 7.2
7.2 to 7.4
14.0 to 14.2
14.2 to 14.4
14.8 to 15.0 (wwv)
21.0 to 21.2
21.2 to 21.4
21.4 to 21.6
28.5 to 28.7
6555.000
6755.000
6955.000
1 0155.000
10355.000
8577.500
8677.500
8977.500
12077.500
12177.500
12277.500
15827.500
*Crystals may be Inserted In these sockets to cover remaining part of 10-meter band.

 

 

  1. (3) to desired band. If KWM-2A, set crystal board selector (12) so desired set of bands appears in window.
  2. Set the MIC GAIN control (4) full counterclockwise. Set RF GAIN control (10) full clockwise

  3. set VOX GAIN control (figure 4-1, R39) full counterclockwise.

  4. Set ANTI-VOX GAIN control (figure 4-1, R45) full counterclockwise.

  5. Adjust the AF GAIN control (6) until some receiver noise is heard in speaker.

  6. Adjust the EXCITER TUNING control (6) to while portion of scale indicating the desired band. Adjust this control slightly to peak the receiver noise output The transceiver is now ready to receive and the selected 200-kHz band may be tuned with the tuning control. The operating frequency can be determined by adding the dial reading to the Band switch setting.

 
  1. Turn function switch (1) to CAL position. Tune dial to nearest 100-khz point (0, 100, or 200), and decrease AF GAIN control as necessary for comfortable listening level. Adjust tuning until the calibrate signal is zero beat. When the calibrate signal is zero beat in the receiver, set the hairline on the 100-kHz point with the zero set knob (11). Set function switch to ON and tune dial to the desired portion of the 200-kHz hand selected. If checking calibrate circuit against WWV is desired, refer to paragraph 4.5.9.

    Note

    The crystal calibrator also will be heard at dial settings 55 and 155; when function switch is in CAL position. Ignore these responses.

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