Midland ALAN 199-A, Руководство пользователя

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able to open the Squelch circuit. To receive very weak signals, it is best to leave
Squelch set to the minimum position by rotating the control maximum counter-
clockwise. The Squelch circuit in your transceiver is an advanced design. It uses an
operational amp IC to accomplish a hysteresis action. The result is that when you
set the Squelch for a precise signal level, if that signal level increases or decreases
in strength, the Squelch circuit will follow this change. With conventional Squelch
circuit, often a signal which changes strength get “chopped” by the Squelch circuit
and you lose a portion of the message. With a hysteresis Squelch, you get it all.
To Transmit:
1. Select the desired channel.
2. Press the push-to talk button on the microphone and hold it an angle about 5-7
cm from your mouth and speak in a normal voice.
3. To receive, release the push-to-talk button. Be sure the mic plug is firmly con-
nected to the jack.
NOTE: shouting into the mic will not increase your power or signal. An internal cir-
cuit automatically sets the mic signal for maximum modulation, so speak loudly will
give no advantage.
PRIORITY CHANNELS (CH 9-19)
ALAN 199-A comes with an emergency selector that permits the immediate activa-
tion of channels 9 or 19. The former (CH9) is used for emergency communications
only, while with the latter (CH19) you can ask for traffic information, etc.
By moving this knob to the central position, the last channel selected will be activa-
ted.
REMOTE SPEAKER OPERATION
An 4 Ohm speaker, rated at 3-10 watts, should be used for this function. Plug the
speaker into the EXT SPKR jack at the rear of the Transceiver. When the external
speaker is plugged in, the internal speaker is disconnected. You can now monitor all
incoming signals through your remote speaker.
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ENGLISH
ISTR.199-A 3-12-2002 14:24 Pagina 7