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The amount
of frequency spread between any two receiving ог any two transmitting
frequencies should not exceed 2 MHz. Since the receiver and transmitter are independent
of each other, you may have any practical amount of frequency separation you wish here.
Only two or more widely spaced frequencies for the receiver alone, or for the transmitter
alone, need be considered under the 2 MHz limitation. For accurate crystal alignment it is
best to use a frequency counter, however, an easy method of tuning to crystals is as
follows:
1.
Receiving:
a.
| Use a calibrated IC-20(IC-20X) or IC-21(IC-21X) signal source.
b.
Set RIT Control (#5) to 0, or off.
c.
Next
adjust trimmer
for that particular channel
to a '0' reading on the
Discriminator Meter (#9).
2.
Transmitting:
a.
Turn the Squelch Control (#3) full counter-clockwise, past the "click."
b.
Adjust
trimmer
for
that
particular
channel
for a '0' reading
on
the.
Discriminator Meter (39).
c.
Ву turning the Mic Gain Control (#16) the deviation can be set for the
best transmit tone.
*
Front Panel
[1] ^ [24]
Crystal unit sockets for transmission
кш!)
1 ~
24
Transmitting frequency adjust trimmers
(D— 00
Crystal unit sockets for reception
-Б-
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