User's Manual

12.5 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 40 dB (with PSOPH)

25 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 40 dB (with no PSOPH)

Load Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . No osc at ³ 10:1 VSWR all phase angles

and suitable antenna

Peak Deviation @ 1 kHz (Nom. Dev +20dB)

25 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Max. 5.0 kHz

12.5 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Max. 2.5 kHz

RECEIVER

Sensitivity (12dB Sinad) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . UHF: < -117 dBm(.31μV)

VHF: < -118 dBm(.28μV)

Amplitude Characteristic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < ±3 dB

Adjacent Channel Selectivity:

25 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >70 dB

12.5 kHz Channel Spacing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . >60 dB

Spurious Response Rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 dB

Intermodulation Response Rejection . . . . . . . . . . . . . . . . . . . . . . 65 dB

Temperature Stability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0005% (-30°C to +60°C)

Conducted and Radiated Spurious Emission. . . . . . . . . . . . . . . . Per FCC and IC Rules and Regulations

AF Distortion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 5%

Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 dB/octave de-emphasized response in

the range 300 Hz - 3000 Hz

RX Hum & Noise:

25 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 40 dB (with no PSOPH)

12.5 kHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 40 dB (with PSOPH)

RX TONE DEMODULATION CHARACTERISTICS

SUBAUDIO TONES - CTCSS

Tone Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Hz to 250.3 Hz

Non-Standard Tones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Hz to 260 Hz

Due to continuing research and development the company reserves the right to alter these

specifications without prior notice.

INTRODUCTION

The SL7000 Series of portable radios from Maxon, utilizes the latest technology in its design and

manufacturing. Both the VHF and UHF models are PLL (Phase Lock Loop Synthesizer)

/ microprocessor controlled, and offer 1 or 4 / 5 watts of power with 256 channel capability.

Multiple functions including Scan, CTCSS / DCS signaling and 12.5 & 25 kHz

channel spacing are standard in these fully programmable wide bandwidth handheld units.

The SL7402 offers many advanced features found in more expensive Land Mobile Radios.