TR-8 Handheld Scanning Receiver

Telonics TR-8 Receiver (R-1000 replacement)
Telonics TR-8 Receiver
  • Wideband coverage (138 – 235 MHz) with narrowband sensitivity
  • Stores over 2000 scannable frequencies, custom labeled and organized in up to 25 independent lists
  • Full 177dB gain control lets you completely turn down the gain for high signal levels - ideal for recovering transmitters
  • Automatic signal detection includes a signal-strength meter, digital pulse-strength indication, and pulse-rate measurement
  • Internal Li-Ion battery provides 15-hour operational life (typ)
  • Easily programmable, with or without a PC
  • Available Now!

TR-8 Editor Software

TR-8 Editor Screenshot
  • View and edit lists on the TR-8
  • Keep TR-8 firmware up-to-date
  • Frequencies can be typed in,
    imported from a TPF file,
    copied from Microsoft Excel,
    or added by range
  • Runs on any Windows 7 or newer PC
  • Download v1.34, 2024.01.02
    (setup-TR8v1.34.exe 541 kB)


TR-8 Handheld Scanning Receiver Specifications

GeneralSynthesized direct-conversion receiver
Frequency coverage138 to 235 MHz continuous coverage
Frequency selectionDirect entry via keypad or rotary knob
Frequency resolution100Hz
Center frequency accuracy±1ppm at 20°C
Frequency stability±2ppm from -20 to +70°C (referenced to frequency at 20°C)
Long term frequency drift(after one-minute stabilization) ±100Hz
Audio bandwidth (-3dB)Three user-selectable ranges:
Acceptable modes of operationpulse amplitude modulation (PAM), pulse period modulation (PPM), continuous wave (CW), and single side band (SSB)
Pulse detection and notificationMinimum pulse width: 10 milliseconds
Minimum pulse rate: 12 beats per minute
Low battery indicationBattery gauge on display
Power supplyInternal: 4.2V/3300mAh rechargeable Li-Ion cell
External (battery charger input): 5V via USB-C port
Typical operating lifetime (@ 20°C)15 hours with automatic LCD backlight usage
12 hours with LCD backlight 'locked on' (medium level)
RF input impedance50 Ohms
Noise figure<4 dB typ with 50Ω source impedance
Sensitivity for 10 dB S+N+D/NBetter than -130 dBm typical (500-1300 Hz audio bandwidth setting)
Typical minimum discernible input level-150 dBm (0.007 microvolt)
Opposite Sideband Suppression40 dB typ
Audio gain control range18 dB typ
RF gain control range177 dB typ
Total gain control range195 dB typ
Audio output impedance16Ω (headphone jack)
Internal speaker cut outInternal speaker is muted when plug is inserted in headphone jack
Audio output jack1/8 inch (3.5mm) stereo or monaural phone plug
Programming / Charging connectorUSB-C port
RF input connectorBNC jack
Display3 x 5 cm 128 x 64 pixel LCD display with auto-dimming backlight
KeypadBacklit silicone keypad with 3 multi-function 'soft' keys.
Gain controlRotary encoder with pushbutton controls both RF gain and audio volume
Tune controlRotary encoder with pushbutton adjusts frequency in 100 Hz steps and scrolls quickly through frequencies stored in scan memory
Multipurpose LEDFront panel LED has multiple functions:
With TR-8 off
Red: battery charging
Blue: battery fully charged
With TR-8 on
Red (pulsed): over-gain warning indicator
Blue (pulsed): RF pulse detected
Scan memory2,475 frequencies (organized in 25 lists with up to 99 frequencies each)
ProgrammingFrequency lists and labels may be modified:
1. Via PC application connected via USB
2. Directly on the TR-8 with user-friendly interface
Operating temperature range-20 to +70 °C
Dimensions15.9 x 6.3 x 3.0 cm (6.3 x 2.5 x 1.2 in) [excluding knobs and connectors]
Weight285g typ

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Manual and Quickstart Guide