Telonics TR-8 Manual
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Telonics TR-8 Manual

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TR-8 RECEIVER MANUAL
Copyright © 2020 Telonics, Inc.
All Rights Reserved.
No part of this publication may be copied without the express written permission of Telonics, Inc., 932 E.
Impala Ave., Mesa, AZ 85204.
TELEMETRY-ELECTRONICS CONSULTANTS
932 E. IMPALA AVENUE  MESA, ARIZONA 85204-6699 U.S.A.
TEL (480) 892-4444  FAX (480) 892-9139
E-MAIL info@telonics.com
www.telonics.com
PB-010101, REVISION A

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  • Page 1 E-MAIL info@telonics.com www.telonics.com TR-8 RECEIVER MANUAL PB-010101, REVISION A Copyright © 2020 Telonics, Inc. All Rights Reserved. No part of this publication may be copied without the express written permission of Telonics, Inc., 932 E. Impala Ave., Mesa, AZ 85204.

  • Page 2: Table Of Contents

    List(s) active ..............................10 List(s) active and auto-scanning ........................11 User Preferences ..............................12 Scanning Interval ............................. 12 Backlight Brightness ............................12 Audio Filter ............................... 12 Next/Prev Buttons ............................12 About this TR-8… ..............................13 PB-010101 Rev A Page 2 of 22...
  • Page 3 Troubleshooting ..............................14 RF Over-Gain ..............................14 System Reset ..............................14 TR-8 Editor PC Software ............................15 Keeping Software Up To Date ......................... 15 Configuring TR-8 Receivers ..........................16 Entering Frequency Lists ..........................16 Fixing List Errors ............................... 18 Tracking Tips ................................. 19 Setting the Tune and Gain/Vol Controls ......................

  • Page 4: Basic Orientation And Identification

    POWER/BACKLIGHT KEY Press and hold to turn the TR-8 on or off. If you try to turn on the TR-8 when the battery is dead, the red LED comes on. To turn on the backlight (for the display and all the keys) without impacting the current operation of the TR-8, momentarily press .

  • Page 5: Soft Keys

    GAIN KNOB: RF GAIN AND AUDIO VOLUME The TR-8 has separate settings for RF gain and audio volume, but both are controlled by the gain knob. Normally, the gain knob controls RF gain. However, if you click the gain knob, its function toggles between RF gain control and volume control, as indicated by an underline marking on the display.

  • Page 6: Tune Knob: Fine Tune And Scroll Frequency List(S)

    This multi-color LED indicates specific conditions. When the TR-8 is off and connected to USB power, the LED indicates when charging is complete. When the TR-8 is on, the LED indicates when an RF pulse or an over-gain condition is detected.

  • Page 7: Frequency Lists

    Scrolling never skips frequencies, even those marked for skipping. Scrolling is available anytime at least one list is active and the TR-8 is on the home screen. Scrolling works even when auto-scanning.

  • Page 8: Auto Scan

    Each list has a label, and each frequency on a list has its own label too. The easiest way to set and manage the labels is using the TR-8 Editor software on a PC. But you can edit labels directly on the TR-8 if needed.

  • Page 9: Usb Features

    USB FEATURES The USB port can power the TR-8, charge the battery, and link to a PC. Any USB port on your PC will work, even if it doesn’t use the new USB-C connector. BATTERY CHARGING When connected to any type of USB power (computer, power pack, wall charger, etc), the TR-8 attempts to charge the battery automatically, whether the TR-8 is on or off.

  • Page 10: Home Screen

    “Menu” soft key. You can also always enter a frequency using the numeric keys to tune to that frequency. The home screen changes appearance slightly depending on how you are using the TR-8. NO LISTS ACTIVE With no frequency lists active, the home screen contains only basic elements.

  • Page 11: List(S) Active And Auto-Scanning

    If you use the fine-tuning knob to modify a frequency on a list, the home screen indicates the modification with as asterisk next to the list position number, as shown here. To update the list entry and save the change, use the Menu and select “Quick Save”.

  • Page 12: User Preferences

    This setting determines the brightness of the backlight. Brighter backlight settings deplete the battery faster. The TR-8 has an ambient-light sensor, so the backlight only comes on when needed. All of the brightness settings include the auto-dimming feature that adjusts brightness based on the amount of ambient light.

  • Page 13: About This Tr-8

    ABOUT THIS TR-8… When you select ‘About this TR-8…’ from the main menu, the TR-8 displays the following important information about your receiver: • Firmware Version (“TR-8 vX.XX YYYY.MM.DD”) • CTN (electronic serial number) • FCC Regulatory Compliance Information (scroll up and down to see the entire statement)

  • Page 14: Troubleshooting

    (or interference). SYSTEM RESET If the TR-8 ever becomes unresponsive, you may need to reset it. Press and hold the tune knob for about 10 seconds. If the TR-8 still won’t respond, connect to USB power and try again.

  • Page 15: Tr-8 Editor Pc Software

    Use any USB-C cable to connect the TR-8 to your Windows PC, and be sure to turn on the TR-8 so it will communicate with the PC. The PC charges the TR-8 whether the TR-8 is on or off, but the TR-8 Editor can communicate with the TR-8 only if the TR-8 is on.

  • Page 16: Configuring Tr-8 Receivers

    ENTERING FREQUENCY LISTS To add or edit frequencies within the TR-8 Editor, first select the list that you would like to modify. This section covers the different ways to enter frequencies within the selected list.
  • Page 17 Copy and Paste The TR-8 Editor supports copying and pasting frequencies (and labels) within the TR-8 Editor and with Microsoft Excel. To copy all frequencies within the selected list, click the Copy All link. To copy a specific frequency, select the row by clicking in the first column in that row.

  • Page 18: Fixing List Errors

    The TR-8 Editor doesn’t allow you to send a config to the TR-8 if you have entered frequencies outside the supported range (137.99 – 235.01 MHz) or if a list or frequency label is too long for the TR-8 to display.

  • Page 19: Tracking Tips

    TRACKING TIPS The TR-8 is intuitive and user friendly, but VHF tracking can be tricky. Here are some pointers. SETTING THE TUNE AND GAIN/VOL CONTROLS RF gain and audio volume are different. VHF telemetry is all about adjusting RF gain. So why is there a...

  • Page 20: Specifications

    SPECIFICATIONS 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 ± 1 ppm at 20 °C Frequency stability ± 2 ppm from -20 to +70 °C (referenced to frequency at 20 °C) Long term frequency drift (after one-minute stabilization) ±100 Hz Audio Bandwidth (-3dB)
  • Page 21 Rotary encoder with pushbutton adjusts frequency in 100 Hz steps and scrolls quickly through frequencies stored in scan memory Multipurpose LED Front panel LED has multiple functions: With TR-8 off Red: battery charging Blue: battery fully charged With TR-8 on...

  • Page 22: Regulatory And Compliance Information

    2. This device must accept any interference, including interference that may cause undesired operation of the device. Responsible Party: Telonics (Telemetry Electronics Consultants) Inc 932 E Impala Ave / Mesa, AZ 85204 / Tel. 480 892 4444 / email: info@telonics.com PB-010101 Rev A Page 22 of 22...

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