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Midland Radios - Fundraiser

Midland 70-3400B, 40-watt VHF mobile radios that we have modified for the 2-Meter ham band. After modification, these radios perform to specs as listed in the Midland service manual. The radios come programmed with 95 repeaters and simplex channels, which include repeaters in Southwest Missouri, Southeast Kansas, Northeast Oklahoma, and Northern Arkansas as well as a plethora of FM Simplex channels.

Midland 70-3400B VHF Hi-Band

MIDLAND SYN-TECH II - Operator'sManual

Standard Programming Sequence

Radio Packages Include:

  • Trunk Unit Transceiver
  • Mobile Mounting Bracket with Lock and Keys
  • Control Cable for Remote Mounting of Control Head (approximately 16')
  • Control Head with Mounting Bracket
  • Midland External Speaker
  • Midland Hand Microphone with Mic Hanger
  • 12 Gauge Power Cable (fuse not included)

Radio Features:

  • 320 Channels
  • Volume and On/Off Knob
  • Squelch Knob
  • Channel Select Knob
  • Priority 1 and 2 Options
  • Scan
  • Ability to Add or Delete Channels from your Scan List
  • Monitor Function (to defeat PL tone on receive)

Radio Specifications:

  • Operating Voltage: 13.6 v DC; Negative Ground (usable from 10.5 to 16 V DC)
  • Temperature Range: -22 Deg F to 140 Deg F
  • Antenna Impedance: 50 ohms
  • Frequency Control: Phase-Lock-Loop Synthesized
  • Frequencies of Operation: 150-174 MHz (modified to operate to 144 MHz)
  • Channel Capacity: Up to 320 TX and RX
  • Channel Spread: 24 MHz
  • Duty Cycle: 1 minute TX; 4 minute RX
  • High Humidity: 95% at 122 degrees Fahrenheit
  • Vibration Stability: Per EIA RS-152C and Applicable Portions of MIL810C/D
  • Shock Stability: per EIA RS-152C and Applicable Portions of MIL810C/D
  • Current Drain: Standby--0.5A DC; RX--2.0 A DC; TX--9.0A DC

Dimensions:

  • Trunk Mount Unit: 2.3" X 7.3" X 12.6"
  • Small Control Head: 2.3" X 4.7" X 3.0"
  • Remote Speaker: 4.8" X 4.8" X 2.8"

Weight:

  • Trunk Unit: 6.8 lbs
  • Small Control head: 0.5 lbs
  • Remote Speaker: 1.38 lbs

Transmitter Specifications:

  • Power Output: 40w (adjustable down to 20w)
  • Modulation System: 16K0F3E, Direct FM
  • Audio Harmonic Distortion: 3% THD (1 KHz tone at 3.0 kHz Deviation & 750 us De-emphasis
  • System Deviation: 5 kHz Maximum
  • Hum and Noise: 55 dB
  • Occupied Bandwidth: Less than -60 dB of Carrier Power 30 kHz Outside Carrier Frequency
  • Microphone Input Level: -8 dBm 3dB at 600 ohms
  • Sensitivity: 12 dB SINAD = 0.35 uv Maximum
  • Threshold Squelch Break: 0.18uv Maximum or 6 dB SINAD
  • Tight Squelch Break: 0.8 to 1.2 uv
  • Receiver Attack Time: 50 ms
  • Receiver Squelch Closing Time: 100 ms
  • Adjacent Channel Rejection: 90 db at 30 kHz
  • Spurious Response Immunity: 90 dB
  • Intermodulation Immunity: 77dB minimum
  • Audio Power Output: 12w with 4-ohm External Speaker
  • IF Frequencies: 10.7 MHz (1st) and 455 kHz (2nd)

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The Nixa Amateur Radio Club, Inc. is a 501(c)(3) nonprofit organization.
All contributions are tax-deductible.