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Copyright © 2000 by Magnum International. All rights reserved.
TABLE OF CONTENTS Introduction ......................................................................................................... 4 Limited Warranty ................................................................................................. 5 Installation ...................................................................................................... 6 - 7 Front Panel Controls .....................................................................................8 - 11 Rear Panel ..........
INTRODUCTION Congratulations on your purchase of a Magnum AlphaForce 10 meter FM/AM transceiver. The AlphaForce 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.
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.
INSTALLATION 1. CONTENTS Unpack and inspect your Magnum AlphaForce for missing or damaged components. Your AlphaForce includes the following items: Quantity 1 1 1 1 1 1 Connect the positive (+) red wire of the DC power cord to a positive 13.8 volt source at the vehicle fuse block. If connecting to the fuse block, it is recommended that a switched power source is used so that the power to the transceiver is disconnected when the vehicle is off.
6. VSWR Before use, it is important to determine the antenna system’s VSWR (voltage standing wave ratio). First, make sure the SWR bridge (meter) is in good working order and is calibrated. To ensure your radio is performing properly the VSWR should never exceed 1.5 to 1. Never transmit on any antenna system where the VSWR exceeds 1.8 to 1. This will stress the output stage and could destroy the RF transistors; this type of misuse and failure is not covered under warranty.
16 15 14 17 20 18 21 19 22 23 13 12 24 2 1 4 3 7 5 6 9 8 10 11 FRONT PANEL CONTROLS 1. OFF / VOLUME CONTROLS OFF: Turns the power to the radio on and off. 4. RF GAIN CONTROL Adjusts the receiver sensitivity to both signals and background noise. This affects the distance at which a signal can be detected. Turning the control counterclockwise reduces the receiver sensitivity. This is particularly useful in areas where large volumes of traffic (signals) are present.
CALIBRATE: CAL position activates the meter to calibrate for SWR measuring. To calibrate for SWR, set the switch to the CAL position, press the PTT switch and rotate the calibrate control (refer to 7) until the meter (refer to 13) needle lines up with the CAL mark on the far right side of the meter. Once lined up, release the PTT. The transceiver is now ready to measure SWR. NOTE: When first attempting to calibrate make sure the transceiver is in the AM mode (refer to 22).
To tune frequencies in either 10 kHz or 100 kHz increments, press the STEP button until the desired digit is flashing. Rotate the FREQUENCY control in either direction. The entire frequency range of the Magnum AlphaForce can be stepped through in 10 or 100 kHz increments. SHIFT: Used for programming offsets to operate repeater networks. The AlphaForce can transmit and receive on different frequencies. To program the offset, press the FUNC button and hold down the SHIFT button for 3 or more seconds.
TONE: Press the FUNC button, and then press the tone button to turn on the receive audio tone control. TONE will appear on the LCD indicating the feature is activated. This feature will roll-off high frequency noise (i.e. “white” noise). Under many operating conditions this will improve the clarity and understanding of received signals. 5) NB and ANL Indicates that both the noise blanker and the automatic noise limiter are active. 6) TONE Indicates that the receive audio tone low feature is active.
GENERAL SPECIFICATIONS Frequency Coverage Antenna Impedance Frequency Control Frequency Accuracy Power Requirement Current Consumption Dimensions 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 - 13.8 V DC, negative ground 6 amps maximum 7.75 x 2.5 x 10.
