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Maximum
Frequency Deviation
TRANSMIT
FREQUENCY
(Fig. 6)
1. Prepare
a pick-up
coil, put
it around
the telescopic
antenna,
and connect its lead to the frequency count-
er.
TR-2200G
Fig. 6
2. Adjust each channel to the exact TRANSMIT
frequen-
cy by means of associated frequency adjust trimmer.
Note:
If the available frequency counter dose not measure
144
MHz, connect the counter to the base of Ot4 through a
0.01zF coupling capacitor. This set-up permits the count-
er to indicate fundamental frequencies. Adjustment toler-
ance is +200 Hz.
Each TRANSMIT
frequency is related to its fundamental
frequency as follows:
FUNDAMENTAL
FREQ. (MHz)
TRANSMIT
144.150
144.200
144.250
RF Meter
1. Use 13 volt supply voltage.
2. Connect
a power
meter
to the external
antenna
connector.
3. Adjust VRt3 and/or modify the position of the pick-up
lead, located near Lt22, until the meter reads figure 8.
(The same applies to the telescopic antenna.)
Transceiver
TR-2200G
Ammeter
ADJUSTMENT OF OTHER CIRCUITRY
Battery Check Meter
1. Set the supply voltage to 10 volts.
2. Adjust VRs3 (on the RECEIVE
section
PCB), until the
pointer deflects to between
the red and black marks.
(Be sure not to allow the screwdriver, used in this
adjustment,
to come
in contact
with the chassis
and
other circuits.)
Charging Circuit (Fig. 7)
1. Turn the transceiver power switch off.
2. Disconnect one of the snaps at the battery holder and
measure the current.
Note: Checking charge current
Fig. 7
Model
Note:Charging
current vs battery volgage curve for nick-
elcadmium cells is shown in Fig. 8. The charging current
may deviate from this curve depending
on the particular
transceiver or cells used.
1 pattern of charge current decrease
—*
Charge
current
(mA)
3
6
9
12
15
—
Battery voltage (volts)
Fig. 8
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