capability of 3 watts at least should be
required. Use
PA SP
jack on the rear
panel of the radio for its connection using
3.5 millimeter 0 [subminiature] plug
[available from your nearest radio/CB
supply shop].
Be sure that there is physical se-
paration between the microphone and
the PA speaker itself. If the speaker is
located close to the microphone, acoustic
feedback will result when the public
address is operated at very high volume.
Maintenance
The
transceiver
is specifically designed
for the environment encountered in
mobile installation. The use of fully
transistorized circuitry containing very
reliable IC and semiconductors result in
high stability and reliability in base
operation. Should a failure occur, how-
ever, replace parts only with identical
parts authorized by
Apollo. Do not
substitute. Refer to the schematic dia-
gram.
Adjustment
The
Transceiver
is factory aligned and
should not require any adjustment when
used with 52 ohms antenna. If any
antenna other than 52 ohms impedance
is used, adjustment of the transmitter
output circuit may be made to obtain
optimum power transfer to the antenna.
This adjustment should be made only by
qualified personnel using a high quality
measurement equipment.
Note
If the performance described in the
Receive
and
Transmit Operation
section
can not be obtained, review the in-
structions to insure that proper pro-
cedures were followed. If a problem still
exists, ask your dealer of
Apollo
or from
which you purchased the
Apollo-IV
for
specific servicing information. They will
meet your needs gratefully.
Technical Specifications
General
Frequency Composition:
PLL [phase locked loop] synthesization.
Frequency Range:
27.015 to 27.225 MHz.
Channels:
18.
Frequency Tolerance:
±0.005%
Operating Temperature:
—30
°
C to 50
°
C.
Operating Voltage:
240
volts, 50 or
60
Hz ac, or 13.8 volts
[nominal 12 volts] dc.
Emission Type:
Lower sideband, Upper sideband, or AM.
Receive Portion
Sensitivity at 10 dB MI [AM]:
1
microvolts.
Sensitivity at 10 dB S/N [SSB]:
0.25 microvolts.
I F response at 6 dB down [AM]:
6
kHz.
IF response at 6 dB down [SSB]:
2.5 kHz.
Clarification:
±800 Hz.
Audio Output Power at 8 ohms:
3 watts.
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