User's Manual

2-13
2.5 OPTIONAL LOUDSPEAKER, HEADPHONE INSTALLATION
Provision is made for connection of an external loudspeaker or headphone to the
SPEAKER/PHONE jack of the transceiver, as shown in Figure 3-1.
2.5.1 External Loudspeaker
When an external loudspeaker is to be installed, an 8-ohm nominal impedance loudspeaker
should be used. The loudspeaker cable should be terminated by a 1/4 in., 3-pole telephone plug
(male), with the loudspeaker connected between tip and sleeve (ground). Insert the external
loudspeaker connector into the SPEAKER/PHONE jack located on the front panel of the
transceiver. When the external loudspeaker is connected to the transceiver SPEAKER/PHONE
jack, the internal loudspeaker is automatically disconnected.
2.5.2 Headset
Headset impedance should be 150 to 600 ohms. The headset cable must terminate in a 1/4
in. 3-pole telephone plug (male), to mate with the SPEAKER/PHONE jack located on the front
panel of the transceiver. The internal loudspeaker is automatically disconnected. Connect the
headset as indicated below for receiver audio with or without transmit audio.
(1) HEADSET WITHOUT TRANSMIT AUDIO - When receiver audio only without transmit
audio is required, the headset should be connected between the tip and sleeve (ground)
of the telephone plug.
(2) HEADSET WITH TRANSMIT AUDIO - When receiver audio with transmit
audio is required, the headset should be connected between the ring and sleeve
(ground).
2.6 TRANSCEIVER ADJUSTMENTS AND SETTINGS
The locations at which certain transceiver settings and adjustments can be performed are
shown in Figure 2-5. The top dust cover of the transceiver must be removed as described in
paragraph 2.2.1 to access the AGC, Squelch and Modulation settings. The plastic plugs must
be removed prior to adjustment of the remaining settings which are accessed from the bottom
of the transceiver chassis. If alignment procedures for these settings are required please
consult the manufacturer or the appropriate service manual.
2.7 OPERATIONAL CHECK
Perform an operational check of the transceiver after all adjustments. Ensure that the
transceiver operates in both the transmit and receive modes of operation, using the Operating
Instructions given in Section 3 of this document and the appropriate specified operating
procedures for use with the Remote Control Unit.
2.8 STORAGE
To store for an extended period, store unit in a dry place, in the original shipping container.