Radio Shack HTX-420 User Manual

BG TECH.
VERSION III
2001/2/28
learn Morse code for a Technician Class license, we encourage you to learn it anyway so you can advance to
higher levels of operating privileges.
There is no fee to take the Novice exam. As soon as you pass the Novice exam, you can immediately take the
Technician exam. All license level tests are administered by a three-member Volunteer Examiner Team.
Contract the ARRL for a schedule of exam opportunities in your area.
The Technician Class license lets you use the transceiver to communicate directly with other operators, and
use repeaters for distant communication.
Amateur radio is a great hobby that has enriched the lives of millions of people all over the world. The ARRL
would be glad to hear from you if you need more information or would like to join!

Radio Shack HTX-420 Specifications

Frequency

2-Meter TX frequency range	144–148 MHz
2-Meter RX frequency range	137–174 MHz
70-cm TX frequency range	438–450 MHz
70-cm RX frequency range	420–512 MHz
Air Band frequency range	108.000-136.9875 MHz
Weather Band channels	CH1–CH7

Operating Environment

frequency stability	± 10 ppm
operating temperature range	14° to 140° F (–10° to 60° C)
operating voltage range	DC 5 V to 13.8 V

Receiver

circuit type	Dual Conversion, Superheterodyne
1st IF frequency	45 MHz
2nd IF frequency	450 kHz
sensitivity	0.2 µV For 12dB Sinad
distortion	5% Max
S/N ratio	34 dB Min.

Transmitter

power output at DC 7.2 V	3 W
power output at DC 13.8 V	4 W
distortion (nominal)	3%
deviation	± 5 kHz Max.
S/N ratio	32 dB
current drain at DC 7.2 V	1200 mA
current drain at DC 13.8 V	1500 mA

Weight and Dimensions

weight with rechargeable battery	11.46 oz (325g)
dimensions (HWD)	4[1]/2 × 2[2]/5 × 1[1]/5 (122 × 61 × 31 mm)
impedance	50 ohm