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•When the transceiver receives no signal within an 8-second period, p begins flashing indicating power save is active.

•When the transceiver receives a signal during the 8-second period, p remains steady.

•The green signal indicator lights to indicate that a signal has been received and that power save is on stand-by.

•To use the transceiver for packet communications, disable power save (see “Using the Transceiver with Packet Radio” on Page 7).

(TNC). See the following diagram for a suggested connection. Refer to your TNC instructions for details.

HTX-420 TNC Computer

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To lock the transceiver’s keypad so you do not accidentally change a setting, press F+LOCK (DW). This locks all buttons except PTT, PWR, F, and M.

To unlock the keypad, press F+LOCK (DW) again.

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When you press any key except PTT or F, the backlight turns on for about 5 seconds. Press M to turn on the backlight.

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The transceiver is preset to sound a beep each time you press a key. To turn off the beep, press F+BEEP. 8F-E<<briefly appears. To have the beep sound again, press F+BEEP again.

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Follow these steps to change the frequency increment used during scanning and stepping to a frequency.

1.Press F+STEP. IJ;Fýand the current step setting (in kHz) appear.

2.Repeatedly press 8 or 9 or CH until the desired new setting appears. You can change the frequency step to 5 kHz, 6.25 kHz, 7.5 kHz, 10 kHz, 12.5 kHz, 15 kHz, 20 kHz, 25 kHz, or 50 kHz.

3. Press

or PTT to store your selection.

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Power save conserves battery power by turning off power to the receiver part of the transceiver and turning it on briefly every 8 seconds to check for a transmission.

To enable power save, press F+PS (5). p appears.

To disable power save, press F+PS (5). p disappears. ±

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Follow these steps to have the transceiver automatically turn off after a preset period of non-use.

1.Press F+APO (3). Auto Power Shutoff is normally disabled. e<< appears.

2.Repeatedly press either 8 or 9, or

turn CH to select a time period until power shutoff. You can select e<<, )&, ,&, /& or '(& minutes.

3. Press PTT or	to store your selection
and exit.

To turn off auto power-shutoff, press F+APO again and select e<<.

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When you communicate using repeaters, keep your transmissions as brief as possible. Most repeaters have built-in timers that limit single transmissions to 3 minutes or less. You can set the transceiver to stop transmitting if you exceed a set time limit with a single transmission.

To set a value for the time-out timer, press F+TOT (4). The default setting e<< appears along with JEJ. Repeatedly press 8 or 9, or turn CH to select the desired time-out interval (up to 20 minutes). When you select a value for the time out feature, JEJ appears. Press or PTT to store the setting and exit to the VFO mode.

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The transceiver can receive seven NOAA (National Oceanographic and Atmospheric Administration) weather broadcast frequencies. To listen to the channel broadcasting in your location, repeatedly press to select the weather band. MN appears. Then rotate CH or repeatedly press

8or 9 to select your local weather channel from the following table.

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9>#'	162.400

9>#(	162.425
9>#)	162.450

9>#*	162.475
9>#+	162.500

9>#,	162.525
9>#-	162.550

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Traditional weather radios simply receive the NOAA weather broadcast (usually within a 40-mile radius), then sound an alarm if any emergency code was transmitted along with the broadcast. People who live outside an affected area are often alerted even when their area is not affected, causing many of