HTX-212 Two-Meter Mobile Transceiver
(190-1125)                 Advanced Operation         Faxback Doc. # 19131

FREQUENCY OFFSETS DEFAULTS

When you select a frequency, the HTX-212 defaults to the following
frequency offsets:

Receive Frequency                  Transmit Offset

144.600 to 144.910 MHz             + offset
144.910 to 145.210 MHz             No offset (Simplex)
145.210 to 145.510 MHz             -offset
145.510 to 146.010 MHz             No offset (Simplex)
146.010 to 146.380 MHz             + offset
146.380 to 146.610 MHz             No offset (Simplex)
146.610 to 147.000 MHz             - offset
147.000 to 147.400 MHz             + offset
147.400 to 147.600 MHz             No offset (Simplex)
147.600 to 148.000 MHz             - offset

The default offset is 600 kHz. For example, if you tune to receive 146.940
MHz, the HTX-212 automatically transmits at 146.340 MHz (600 kHz less than
146.940).

NOTE:  Outside these ranges, the HTX-212 operates with no offset.

Changing the Default Offset

Follow these steps to change the default offset for the VFO modes.

1.  Press VFO.

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

3.  Press SHIFT. The HTX-212 displays "oS" and the current offset (in 
    MHz).

4.  Rotate TUNE, press UP or DOWN on the microphone, or directly enter
    the step using the microphone's keypad to select an offset default
    (from 0 to 4 MHz in 10 kHz steps).

5.  Press SHIFT to save the setting.

NOTE:  This setting does not affect frequencies stored in memory.

Reversing the Offset

To reverse the transmit and receive frequencies when you are operating
duplex, press F then REV.  For example, if you tune to 146.940 (which has
a - offset), pressing F then REV makes the transceiver receive on 146.340
and transmit on 146.940.  The setting returns to the default if you change
frequencies or turn off the HTX-212.

Overriding the Duplex Offset

When you tune to a frequency, the HTX-212 automatically selects either
simplex operation, or duplex operation with the correct offset direction.
To override this setting, press SHIFT.  Each time you press SHIFT, the
offset switches between +, -, and no offset.  The setting returns to the
default if you change frequencies or turn off the HTX-212.

NOTE:  The HTX-212 will not switch to an offset that would place the
       transmit frequency out of the permitted transmit range.  For 
       example, you cannot set the offset to - for frequencies less than
       145.200 (600 kHz above the minimum transmit frequency of 144.600).

USING THE DUAL VFOS FOR DUPLEX OPERATION

Follow these steps to use one VFO transmit and the other to receive.

1.  Press VFO to select VFO-A.

2.  Select a frequency.

3.  Press VFO to select VFO-B.

4.  Select a frequency.

5.  Press DUP. When the HTX-212 displays:

    VFO-A-T
    VFO-B

    it transmits on the VFO-A frequency and receives on the VFO-B
    frequency.  When it displays:

    VFO-A
    VFO-B-T

    it transmits on the VFO-B frequency and receives on the VFO-A
    frequency.


(CS 2/21/96)