The Magnum S3175 (S3 with 175 Watts of power) is designed for the entry level amateur user, and when the transmitter is operated in the US/territories, a licensed amateur operator must be present.

This quality radio is built tough to withstand years of use in harsh mobile environments and trouble-free service. S3175 come with a one year limited warranty.

The Magnum S3175 is a combination microprocessor and phase-lock loop (PLL) contolled radio, combining high RF performance with the user-friendly front panel. It is basically engineered for mobile use but can easily adapt to fixed station operation.

This radio is designed to work on any 13.8 volt DC, negative ground source.  If you have a low battery or worn generator/alternator, this will diminish the performance of the tranceiver. 

The tranceiver will operate using any standard 50-ohm ground plane, vertical, mobile whip, long wire or similar antenna, as long as the antenna is rated at 100 watts PEP minimum.  The back of the radio has a standard SO239 type antenna connector, and PL259 and high grade coax (RG213, RG58A/U or Mini RG-8 recommended) is required for connection.  A ground plane antenna provides greater coverage and should be used for fixed station-to-mobile operation, with a non directional antenna used for mobile installation.

Radio Size 11.5" x 8" x 3"

Shipping weight 11.65 pounds

General Specifications

• Emission Modes FM (F3E) / AM (A3E)
• Antenna Impedance 50 ohm, unbalanced
• Frequency Control Digital Phase-Lock Loop (PLL) Synthesizer
• Power Requirement 10.5 - 15 V DC, negative ground
• Current Consumption 7.0 amps maximum

Transmitter Specifications

•   Power Output   FM .. 30 Watts
                         AM .. 10 Watts Avg/50 Watts PEP 
•   Tuning Steps  10 kHz
•   Final Transistors  2SC1969 (x2)
•   Spurious Emmissions  >59 dB below peak output power
•   Carrier Suppression  >40 dB below peak output power   
•   FM Deviation  +/- 2 kHz maximum
•   Audio Response  > 30 dB below peak output
•   Frequency Response  400 - 2800 Hz
•   Microphone Impedance Dynamic Microphone, 600 ohm

Receiver Specifications

• Circuit Type Dual Conversion superheterodyne
• Sensitivity  AM  1.0 uV @ 10 dB S + N/N
                  FM 0.3 uV @ 12 dB SINAD
• Selectivity  AM/FM 6.0 kHz (-6 dB) / 18 kHz (-60 dB)
• Adjacent Channel Rejection Better than 70 dB
• IF Rejection  Better than 80 dB for all frequencies
• Frequency Response  250 - 3000Hz
• Audio Output Power  2 Watts minimum @ 10% THD with an 8 ohm load
• Audio Output Impedance 8 ohms

In The Package

• Magnum S3 Transceiver
• Microphone
• DC Power Cord with Inline Fuse
• Mounting  Bracket with Hardware
• Microphone Hanger with Hardware set
• Operating Manual with great Schematics/PLO
• Warranty Registration Form