HTX-404 440 MHz UHF FM Transceiver
(190-1140) Memory Faxback Doc. # 6176
Your 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 (see
"Transmitting") and sub-audible tones (see "Tone-Coded Squelch [CTCSS]").
Follow these steps to change the settings for a memory location.
1. Tune to the memory channel. (See the instructions for the memories
below.
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 \/ SC to set the transmit sub-audible tone frequency. The
HTX-404 displays tc followed by the transmit sub-audible tone
frequency.
5. Rotate TUNE to change the transmit sub-audible tone frequency. Set the
option to oFF to not transmit a sub-audible tone
6. Press \/ SC to set the receive sub-audible tone frequency. The HTX-404
displays rC followed by the receive sub-audible tone frequency.
7. Rotate TUNE to change the receive sub-audible tone frequency. Set the
option to oFF to not require a receive sub-audible 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 sub-audible 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 /\ SC or \/ 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 change the priority
scan time, see "Setting the Priority Scan Time."
To continuously scan the three priority frequency memories, press PR. Then
press and hold down /\ SC or \/ 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
into the selected standard memory.
5. To change the frequency separation or sub-audible tones, see "Changing
Memory Options" above. Each memory location can have different
settings.
To set the HTX-404 to a standard memory, press MR. Then rotate TUNE or
press /\ SC or \/ SC to select one of the 12 memories.
To continuously scan standard memories, press MR. Then press and hold down
/\ SC or \/ SC for at least 1 second.
Note: The HTX-404 stops scanning according to the scan options you have
set. See "Scan Options" for more information.
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 sub-audible
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 sub-audible 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 sub-audible transmit tone and the sub-audible receive tone.
(RLR/EB 3/2/98)