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SF401 Plus 27MHz-3000MHz Portable Frequency Counter

Surecom ★ 3.6/5 · ItemOracle Score Mid-Range

$44 USD
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SF401 Plus 27Mhz-3000Mhz Radio Portable Frequency Counter Meter with CTCCSS DCS Decoder

Portable frequency counter for measuring continuous carrier signals with CTCSS/DCS decoding and signal strength indicator. Easy 4-button control and TCXO-based accuracy from -45°C to 65°C

Highlights

  • CTCSS/DCS decoding
  • TCXO-based accuracy
  • portable, battery-friendly form factor

Pros

  • compact portable design
  • CTCSS/DCS decoding capability
  • signal strength indicator
  • easy-to-use four-button interface
  • wide measurement ranges for two-way radios

Cons

  • mixed feedback on ease of use
  • mixed opinions on tone accuracy
  • some reports of inaccurate CTCSS display

Best For

  • sniffing unknown CTCSS tones
  • checking two-way radio carrier frequency
  • field testing walkie-talkies
  • verifying signal strength
  • portable RF measurement in remote locations
  • TCXO-based frequency accuracy checks

Features

  • Measures frequency of continuous carrier signals from two-way radios
  • Includes signal strength indicator for quick assessment
  • Portable counter with easy-to-use four-button control
  • Operates over selectable ranges covering typical two-way radio frequencies
  • TCXO-based oscillator yields 2–4 ppm accuracy from -45 C to 65 C

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