MAGNUM 357DX OPERATING MANUAL
Copyright © 2000 by Magnum International. All rights reserved.
TABLE OF CONTENTS Introduction ......................................................................................................... 4 Limited Warranty ................................................................................................. 5 Installation ...................................................................................................... 6 - 7 Front Panel Controls..................................................................................... 8 - 10 Other Features ......
INTRODUCTION Congratulations on your purchase of a Magnum 357DX 10 meter FM/SSB/AM 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.
LIMITED WARRANTY Magnum International warrants this product to be free of defects for a period of one (1) year from the original date of purchase. This warranty is non-transferable. This limited warranty is subject to repair or replacement of defective components only. This warranty is void if the radio has been tampered with or misused.
External Speaker Jack RF Deck (rear panel) Control Deck (rear panel) Antenna Connector Control Cable D-SUB Jack Control Cable D-SUB Jack Control Cable D-SUB Plug Control Cable D-SUB Jack Power Lead Red (+) Black (-) Control Cable (9 Feet) INSTALLATION 1. Contents Unpack and inspect your Magnum 357DX for missing or damaged components. Your 357DX includes the following items: Quantity 1 1 1 1 1 1 1 1 4.
5. Electrical Connections The Magnum 357DX is designed to work on any 13.8 volt DC, negative ground, source. The condition of a vehicle’s electrical system can affect operation. A low battery, worn generator/alternator, or poor voltage regulator will seriously impair the performance of the transceiver. Any of the above conditions could result in a high level of receiver noise generation or a substantial loss of the transmitter’s RF output.
16 17 12 13 3 1 2 5 4 14 7 6 15 9 8 10 11 FRONT PANEL CONTROLS 1. MIC: Microphone Input: A 6-pin, lock ring type, microphone connector is used. Microphone wiring is as follows: Pin 1 : Microphone Audio Pin 2 : Receive Pin 3 : Transmit Pin 4 : Down (Up w/ 22K Ohm Resistor) Pin 5 : Ground Pin 6 : +13.8 VDC 4. STEP \ NB \ 1 STEP: Tuning Step. The STEP control selects frequency resolution in either 1 kHz, 10 kHz or 100 kHz steps. Press the STEP button, one of the digits will flash on and off.
RPT: Repeater Access Tone. Most repeaters require an 88.5 Hz tone burst to access. To activate the 88.5 Hz tone burst, press the FUNC control and then press the RPT button. RPT will appear on the LCD indicating that the tone burst will now automatically be transmitted whenever the PTT is pressed. To deactivate, repeat the same process. To stop scanning, press the SCAN button, or momentarily press the PTT button on the microphone (scanning will stop without transmitting). 4: Memory Channel 4.
. CLAR \ FUNC CLAR: Clarifier. The clarifier shifts both the TX and RX frequency 1 kHz each side of the center frequency. This is necessary for tuning to an SSB signal. Rotate the clarifier control clockwise or counterclockwise to tune an SSB signal. OTHER FEATURES 1. PROGRAMMING TONE This tone sounds each time the CPU is being programmed. It is helpful, in the beginning so you can be sure the command has been entered.
GENERAL SPECIFICATIONS Frequency Coverage Antenna Impedance Frequency Control Frequency Accuracy Power Requirement Current Consumption Control Deck Dimensions RF Deck Dimensions Control Cable Dimensions Control Deck Weight RF Deck Weight Control Cable Weight : : : : : : : : : : : : Transmit and Receive ...................................... 28.000 to 29.699 MHz 50 ohm, unbalanced Digital Phase-Lock Loop (PLL) Synthesizer Better than +10 ppm from 0 - 40 0C after 15 min. warm up 12 - 13.
MAGNUM INTERNATIONAL A Division of RF Limited PO Box 445 • Issaquah WA 98027 Telephone 425-558-9592 • Facsimile 425-558-9704 Technical Support Only 1-877-MAGNUM-9 (1-877-624-6869) http://www.MagnumRadio.com E-Mail info@MagnumRadio.
