HTX-404  (190-1140)        Using Memory Channels        Faxback Doc. # 6176

The HTX 404 has 16 memory channels in three groups.

*  One calling-frequency memory

*  Three priority-frequency memories

*  12 standard memories

CHANGING MEMORY OPTIONS

You can program each memory with a different frequency offset and
subaudible tones.

Follow these steps to change the settings for a memory location.

1.  Tune to the memory channel.

2.  Press F+ M-SET.  The HTX-404 displays tF followed by the transmit
    frequency.

3.  Rotate TUNE to change the transmit frequency.

4.  Press DOWN ARROW SC to set the transmit subaudible tone frequency.  The
    HTX-404 displays tc followed by the transmit subaudible tone frequency.

5.  Rotate TUNE to change the transmit subaudible tone frequency.  Set the
    option to oFF to not transmit a subaudible tone

6.  Press DOWN ARROW SC to set the receive subaudible tone frequency.  The
    HTX-404 displays rC followed by the receive subaudible tone frequency.

7.  Rotate TUNE to change the receive subaudible tone frequency.  Set the
    option to OFF to not require a receive subaudible tone.

8.  Press PTT to save the settings in the selected memory channel.

Using the Calling-Frequency Memory

The calling frequency memory stores a single frequency you can quickly tune
to at any time.  Follow these steps to save a frequency in the calling
frequency memory.

1.  Press VF.

2.  Tune to the frequency you want to save.

3.  Set the offset to the desired setting (+,-, or off) by pressing
    F + +/-.

4.  Turn on the tone-squelch option by pressing F +  T-SQL, if necessary.

5.  Press CA.

6.  Press and hold down F+ M-WR for at least 1 second.

The HTX-404 stores the tuned frequency, the frequency offset direction,
and the setting of the tone squelch option.  If you need to set a frequency
offset other than the default 5 MHz separation, or if you need to change
the tone-squelch frequency, see "Changing Memory Options" above.

To use the calling-frequency memory, press CA at any time.  The HTX-404
immediately moves to the calling frequency.  To return to the previous
settings, press CA again.  Or press VF to return to the last manually-tuned
frequency setting.

Using the Priority-Frequency Memories

The HTX-404 has three priority-frequency memories.  The HTX-404 can
periodically scan these frequencies during manual, calling-frequency
memory, or standard memory operation.  Follow these steps to store
frequencies in the priority-frequency memories.

1.  Press VF and tune to the frequency you want to save.

2.  Press F and rotate TUNE until either P1, P2, or P3 appears to the left
    of the tuned frequency.

3.  Set the offset to the desired setting (+,-, or off) and turn on the
    tone-squelch option, if necessary.

4.  Press F + M-WR for at least 1 second to store the tuned frequency in
    the selected priority-frequency memory.

5.  To change the frequency separation or subaudible tones, see "Changing
    Memory Options" above.  Each priority frequency memory can have
    different settings.

To set the HTX-404 to a priority frequency, press PR.  Then do one of the
following to select one of the three memories:

*  Rotate TUNE

*  Press UP ARROW SC or DOWN ARROW SC

*  Press 1, 2, or 3

To have the scanner check the priority-frequency memories for activity,
press VF.  Then press F+ P-SC. for at least 1 second.  The HTX-404 checks
the priority-frequency memories every 4 seconds.

To continuously scan the three priority frequency memories, press PR.  Then
press and hold down UP ARROW SC  or DOWN ARROW SC for at least 1 second.

Note:  You must store more than one priority frequency in memory to
       continuously scan priority-frequency memories.

Using the Standard Memories

Your HTX-404 has 12 standard memories into which you can store frequently-
accessed frequencies for quick access.  Follow these steps to store
frequencies into standard memories.

1.  Press VF and tune to a frequency you want to store.

2.  Press F and rotate TUNE until the memory number to the left of the
    frequency display shows the standard memory you want to store the
    frequency into.

3.  Set the offset to the desired setting (+,-, or off) and turn on the
    tone-squelch option, if necessary.

4.  Press F+M-WR for at least 1 second to store the tuned frequency in the
    selected priority-frequency memory.

5.  To change the frequency separation or subaudible tones, see "Changing
    Memory Options" above.  Each priority frequency memory can have
    different settings.

To set the HTX-404 to a priority frequency, press PR.  Then do one of the
following to select one of the three memories:

*  Rotate TUNE

*  Press UP ARROW SC or DOWN ARROW SC

*  Press 1, 2, or 3

To have the scanner check the priority-frequency memories for activity,
press VF.  Then press F + P-SC for at least 1 second.  The HTX-404 checks
the priority-frequency memories every 4 seconds.

To continuously scan the three priority frequency memories, press PR.  Then
press and hold down UP ARROW SC or DOWN ARROW SC for at least 1 second.

Note:  You must store more than one priority frequency in memory to
       continuously scan priority-frequency memories.

Using the Standard Memories

Your HTX-404 has 12 standard memories into which you can store frequently
-accessed frequencies for quick access.  Follow these steps to store
frequencies into standard memories.

1.  Press VF and tune to a frequency you want to store.

2.  Press F and rotate TUNE until the memory number to the left of the
    frequency display shown the standard memory you want to store the
    frequency into.

3.  Set the offset to the desired setting (+,-, or off) and turn on the
    tone-squelch option, if necessary.

4.  Press F + M-WR for at least 1 second to store the tuned frequency into
    the selected standard memory.

5.  To change the frequency separation or subaudible tones, see "Changing
    Memory Options."  Each memory location can have different settings.


To set the HTX-404 to a standard memory, press MR.  Then rotate TUNE or
press UP ARROW SC or DOWN ARROW SC to select one of the 12 memories.

To continuously scan standard memories, press MR.  Then press and hold down
UP ARROW SC or DOWN ARROW SC for at least 1 second.

Note:  The HTX-404 stops scanning according to the scan options you have
       set.

Clearing Memories

Follow these steps to clear a memory.

1.  Press PR or MR and select the number for the memory you want to clear.

2.  Press F+M-CLR to clear the settings stored in the current memory.

Note:  You cannot clear Standard Memory 1 or the calling-Frequency memory.
       You can only change the memory settings for these memories.

Moving a Memory Channel to the Manual Mode

Follow these steps to quickly move a frequency from a memory channel to the
manual (VFO) mode.

1.  Select the memory channel.

2.  Press F + M > VFO

All settings for the selected memory move to the VFO mode.

REVIEWING PROGRAMMED OPTIONS

Follow these steps to view the transmit frequency and the subaudible
transmit and receive tone settings for a memory or the directly tuned
frequency.  

1.  Press CA, PR, MR or VF and select the memory or frequency you want to
    check.

2.  If you want to check the subaudible tone settings, press F + T-SQL so
    T-SQL appears on the display.

3.  Press and hold M (located above PTT).  The HTX-404's squelch opens, and
    the display shows the transmit frequency for about 1 second, followed
    by the subaudible transmit tone and the subaudible receive tone.

(RLR-02-25-94)