Magnum 357DX

Magnum 357DX 10 meter AM/FM/SSB transceiver.

The 357DX is designed to provide years of enjoyment and trouble-free service. There are many features and functions
designed into this transceiver. To ensure that your investment is enjoyed to its fullest extent, please take a
few moments and thoroughly read this manual.

The Magnum 357DX is a microprocessor controlled, user programmable radio combining both high RF performance
with a user-friendly environment. The 357DX is a 12 volt DC, HF transceiver designed for mobile
use. The transceiver is configured in two separate components; a high powered RF deck and a compact
sized control deck. The two decks are linked via a proprietary control cable. As cabin space diminishes in
modern vehicles, this concept helps create a wider variety of installation options. Although engineered with
mobile use in mind the 357DX, with the addition of a high quality 50-amp power supply, may be easily
adapted for fixed station operation.

The control deck utilizes the latest in surface mount production techniques. This keeps the size of the unit to
a minimum without sacrificing any of the advanced circuits required for today’s high performance radios. The
RF deck incorporates a pair of bi-polar RF transistors in push-pull operation. The devices are continuously
biased class A/B using Magnum’s exclusive fully regulated bias circuit. This means unsurpassed audio quality
in SSB and AM modes.

Some of the features of the 357DX are; an advanced design liquid crystal display that provides the operator
with a full visual account of the transceivers operating status, automatic frequency scanning from either the
front panel or microphone, memory storage of your favorite frequencies and modes, programmable frequency
resolution of either 1 kHz, 10 kHz or 100 kHz, and split frequency operation for repeater use. These
are just a few of the features that make the 357DX a pleasure to own and operate.

IMPORTANT: The Magnum 357DX is designed for amateur radio use. If the transmitter is operated in the
United States or within it’s territories a licensed amateur radio operator must be present at the station. The
minimum license class to operate 10 meter phone is Novice/Technician. If you are studying for your license
and want to familiarize yourself with the operation of the radio, the receiver may be operated with or without
a licensed operator present. For more information regarding FCC licensing, contact your nearest amateur
radio dealer, or for complete details contact the American Radio Relay League

Features

Microprocessor Controlled Transceiver
28.000 to 29.699 MHz Frequency Range*
150 Watts RF Output Power Peak AM,
and 150w PEP in SSB. 100W FM
Variable Power - In All Modes
FM / USB / LSB / AM
1 kHz / 10 kHz / 100 kHz Steps
5 Digit Frequency Display
ECM Microphone with Up and Down Frequency Controls
5 Memory Channels - Saves Both Frequency and Mode
Back Lit LCD Display and Front Panel Controls
Digital S/RF Meter on LCD
RF Gain and Microphone Gain Controls
+/- 1 kHz Clarifier
Noise Blanker and Automatic Noise Limiter
Frequency Scan
Last Channel Recall - Returns to Last Operated Frequency and Mode
Split Frequency Offset for Repeater Use
Receive Audio Tone Control
MARS / CAP Compatible (Permits Required)
1 Year Warranty

Frequency Range : 28.000 - 29.695

Expanded Frequency range:
These are the bands when the radio has been converted only

Band A 25.165 -25.605
Band B 25.615-26.055
Band C 26.065-26.505
Band D 26.515-26.955
Band E 26.965-27.405
Band F 27.415-27.855
Band G 27.865-28.305
Band H 28.315-28.755
Band I 28.765-29.205
Band J 29.215-29.695

When the radio is turned off and on again, it will default to the 10 meter mode ONLY. To return to expanded channel plan and return to your last used frequency and mode:

press the FUNC button and then
press and hold the CALL button for approx. 3 seconds.

Magnum radios sometimes have a small scratch or ding that the factory covers with black touch up. We cannot effect this and do not guarantee your radio to be cosmetically perfect. Bells CB will make no marks or scratches on your radio ourselves. Magnum might though and I cannot control it.