Radio Shack HTX-420 - Manual (Page 10)

10
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You can select one of the three transmitting
power levels: High (no display), Mid (
C C C C
appears), and Low (
BBBB
appears). To select the
level, repeatedly press H/L .
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1 2'4#6+10
You can select a transmit frequency in the
VHF band and a receive frequency in UHF
band or vise versa. Or, you can select a
transmit frequency and a receive frequency
in the same band.
± ± ± ±
1. Press F + XBO ( SC ). The main frequency
is duplicated at the sub frequency
display.
q
appears to the right of the
main frequency display.
2. Enter the transmit frequency on the main
frequency display.
3. Press F + REV ( 8 ) to exchange the main
frequency display and sub frequency
display.
4. Enter the receive frequency on the main
frequency display.
5. Press PTT to transmit using cross band.
To exit the cross band channel operation,
press
F + XBO ( SC ).
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7#.
"9
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You can set the transceiver to check a
specified channel every 2.5 seconds while
receiving any other channel. If the transceiver
finds a signal on the specified channel, it
automatically switches to it.
1. Select a frequency you do not want to
miss while you receive another
frequency.
2. Press DW . The transceiver duplicates
the selected frequency on the sub
frequency display.
3. Select a frequency you want to receive
on the main frequency display.
The transceiver scans the channel on the sub
frequency display every 2.5 seconds.
If you press PTT , the transceiver transmits
the frequency on the sub frequency display
and the dual watch is canceled. If you want to
transmit the frequency on the main frequency
display, press
F + REV to exchange the
frequencies.
If you hold down M , the transceiver scans for
the frequency on the sub frequency display
until you release
M .
4 '%'+8+0) " 6*' "# +4 "$ #0&
Repeatedly press until
7777
appears to select
the airband at the top of the display. Press
8
or
9
, or rotate CH to tune to the
frequency you want to hear. The air band
receiving range is 108 to 136.9875 MHz.
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( 4'37'0%; "4 #0)'
You can change the standard transmit
frequency ranges to extended ranges.
± ± ± ±
Standard Transmit Frequency Ranges:
2 m: 144–148 MHz
70 cm: 438–450 MHz
Extended Transmit Frequency Range:
2 m: 142.000–149.880 MHz
70 cm: 420.000–470.000 MHz
To extend the range, turn off the transceiver.
Then while holding down
SC + 9 , press PWR .
To return to the standard range, repeat the
above steps.
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This device complies with Part 15 of the FCC
Rules. Operation is subject to the following
two conditions: (1) This device may not
cause harmful interference, and (2) this
device must accept any interference
received, including interference that may
cause undesired operation.
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Keep the transceiver dry; if it gets wet, wipe it
dry immediately. Use and store the
transceiver only in normal temperature
environments. Handle the transceiver
carefully; do not drop it. Keep the transceiver
away from dust and dirt, and wipe it with a
damp cloth occasionally to keep it looking
new.
'44"&
+52.#;
If you use your transceiver in an area (such
as a vehicle) that has many metal surfaces,
the transmitted signal can reflect back into
the radio and cause the PLL circuit to unlock.
If this happens,
;HH ;HH ;HH ;HH
appears. This is an
inherent problem with this type of transceiver.
To avoid this problem, you can try reducing
output power, use an external antenna, or
relocate the transceiver when
;HH ;HH ;HH ;HH
appears. If
;HH ;HH ;HH ;HH
appears even when you are using an
external antenna located away from the
transceiver, service might be required.
± ± ± ±
"016'"
± ± ± ±
"
Cross Band Channel Operation
You cannot transmit and receive at the same
time.
Changing the Transmit Frequency
Range
The extended transmit frequency range feature
is only for MARS, CAP, and public service
users. Once you change the setting to the
extended ranges, be sure not to transmit on
those frequencies unless you are licensed to do
so.