3. Connect your SSB radio to a dummy load such as the AEA DL-1500.
4. If your SSB radio has a "monitor" facility, i.e., an audio
output that lets you listen to the audio signals entering the
microphone or phone patch jacks, turn that monitor circuit on.
5. Set the radio's MODE selector to LSB (lower sideband).
6. Set the radio's meter switch to the "ALC" position. If the
radio doesn't have an "ALC" indication, set the meter switch to
"Ip" or "Ic" to read plate/collector current. If a current
reading isn't available, set the meter to indicate power output.
7. If you are using an Timewave or AEA program such as PC-PAKRATT II,
COM-PAKRATT or MACRATT, you must enter the Dumb-Terminal mode
(see program manual) to access the CALIBRATE Mode described below.
8. Enter the Calibrate mode by typing: "CAL <Enter>."
NOTE: In the Calibrate mode only, the "K" key toggles the
transmitter PTT line on and off. The "SPACE BAR" toggles
the PK-232's tone generator from "Mark" (the lower pitched
tone) to "Space" (the higher pitched tone). The PK-232 has
a transmit watchdog timer circuit that unkeys your
transmitter automatically after sixty (60) seconds. As you
perform the following adjustments, unkey periodically, then
rekey the transmitter by typing "K."
9. Adjust the transceiver's Microphone Gain control to its minimum
setting.
10. Press the "K" key on the keyboard to key the transmitter.
Increase the transceiver's microphone gain control until you hear
a continuous tone in the radio's monitor output.
11. If you are able to hear the tones in radio's speaker, tap the
space bar several times until you hear the lower pitched of the
two tones ("mark").
12. With the PK-232 keying the transmitter and transmitting the lower
of the two tones, adjust the transmit audio level as follows:
If you have already connected and calibrated an FM transceiver to
the other PK-232 RADIO port, then complete the following:
I. Rotate the microphone gain control counterclockwise
(CCW) until it is in the totally OFF position.
II. Turn the transmitter's microphone gain control
adjustment clockwise (CW) until until the ALC meter
shows a small deflection from the unmodulated reading.
Check the radio's plate/collector current or output
power indicators.
III. Adjust the microphone gain control until the radio's
indicators show approximately thirty percent (30%) of
the manufacturer's rated full-power reading.
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