TR 8 Series Portable Scanning Receiver

TR-8 Portable Scanning Receiver

Wide Coverage with High Sensitivity and Easy Programming for Professional Use.

The TR-8 is a portable scanning receiver designed for broadband coverage (138 – 235 MHz) with high narrow-band sensitivity. It stores more than 2,000 scannable frequencies, customized and organized into up to 25 independent lists. A full 177 dB gain control allows complete adjustment for high signal levels, making it ideal for transmitter recovery. Automatic signal detection includes a signal strength meter, digital pulse indication, and pulse rate measurement. The internal Li-Ion battery provides up to 15 hours of operation. The TR-8 can be easily programmed, with or without a PC, and is made in the USA.

Key Features

• Broadband coverage from 138 to 235 MHz with high narrow-band sensitivity.
• Stores over 2,000 scannable frequencies, organized into 25 independent lists.
• Full 177 dB gain control to adjust high signal levels.
• Automatic signal detection with strength meter, digital pulse indication, and pulse rate measurement.
• Internal Li-Ion battery with up to 15 hours of operational life.
• Easily programmable via PC or directly on the TR-8.
• Front panel multi-function LED for battery and RF pulse indicators.
• Backlit silicone keypad with multi-function keys.
• Rotary encoders for RF gain, audio volume, and frequency tuning.
• Compact and lightweight design, made in the USA.

• Specifications
• In the Box
• Documents

• General	Synthesized direct-conversion receiver
  Frequency Coverage	138 to 235 MHz, continuous coverage
  Frequency Selection	Direct entry via keypad or rotary knob
  Frequency Resolution	100 Hz
  Center Frequency Accuracy	±1ppm at 20°C
  Frequency Stability	±2ppm from -20 to +70°C
  Long-Term Frequency Drift	±100 Hz after one minute of stabilization
  Audio Bandwidth (-3dB)	500-1300Hz / 350-1800Hz / 800-1600Hz
  Acceptable Operating Modes	PAM, PPM, CW, SSB
  Pulse Detection	Minimum width: 10 ms; Minimum frequency: 12 BPM
  Low Battery Indicator	On-screen battery meter
  Power Source	Internal: 4.2V / 3300mAh Li-Ion; External: 5V via USB-C
  Typical Operating Time	15 hours (automatic LCD backlighting); 12 hours (locked LCD)
  RF Input Impedance	50 Ohms
  Noise Figure	<4 dB typical
  Sensitivity	Better than -130 dBm typical (500-1300Hz)
  Minimum Detectable Level	-150 dBm (0.007 µV)
  Opposite Band Suppression	40 dB typical
  Audio Gain Range	18 dB typical
  RF Gain Range	177 dB typical
  Total Gain Range	195 dB typical
  Audio Output Impedance	16 Ω (headphone jack)
  Internal Speaker	Muted when headphones are inserted
  Audio Output Connector	1/8 in (3.5mm) stereo or mono
  Programming / Charging Connector	USB-C
  RF Input Connector	BNC
  Display	LCD 128x64 3 x 5 cm with automatic backlighting
  Keypad	Backlit silicone with 3 multi-function keys
  Gain Control	Rotary encoder with push-button (RF gain and audio volume)
  Tuning Control	Rotary encoder with push-button, 100 Hz steps
  Multi-Function LED	Red/blue indicators for battery, RF pulses, and over-gain
  Scan Memory	2,475 frequencies in 25 lists
  Programming	Via PC or directly on the TR-8
  Operating Temperature Range	-20 to +70 °C
  Dimensions	15.9 x 6.3 x 3.0 cm (6.3 x 2.5 x 1.2 in)
  Weight	285 g typical

• • 1x TR-8 Portable Scanning Receiver
• • TR-8 Firmware v1.35 Installation File (setup-TR8v1.35.exe, 543 kB)