Radio Shack Advanced Operation of the HTX-242 Radio: Frequency Offsets and Settings

ADVANCED OPERATION

Frequency Offset Defaults

When you select a frequency, the HTX-242 defaults to the following frequency offsets if auto duplex is turned on:

Receive Frequency	Transmit Offset
Below 144.600 MHz	No offset (Simplex)
144.600 to 144.905 MHz	+ offset
144.910 to 145.205 MHz	No offset (Simplex)
145.210 to 145.505 MHz	– offset
145.510 to 146.005 MHz	No offset (Simplex)
146.010 to 146.375 MHz	+ offset
146.380 to 146.605 MHz	No offset (Simplex)
146.610 to 146.995 MHz	– offset
147.000 to 147.395 MHz	+ offset
147.400 to 147.595 MHz	No offset (Simplex)
147.600 to 147.995 MHz	– offset
148.000 MHz and above	No offset (Simplex)

The default offset is 600 kHz. For example, if you tune to receive 146.940 MHz, the HTX-242 automatically transmits at 146.340 MHz (600 kHz less than 146.940).

!Note: Outside these ranges, the HTX-242 operates with no offset.

Turning Auto Duplex On and Off

The HTX-242 can automatically select the correct duplex offset for frequencies normally assigned to repeaters and selects no offset (simplex) for other frequencies. Follow these steps to turn this option on or off.

1.Press VFO.

2.Hold F for at least 1 second. FUNC flashes.

3.Press MR.

4.Repeatedly press ▲ or ▼ until the HTX-242 displays AS and either on (if the option is on) or oFF (if the option is off).

5.Rotate TUNE, or press UP or DOWN on the microphone, to select on or oFF.

6.Press MR or PTT to save the setting.

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