Conventional VHF Telemetry Receivers

Introduction

Telonics VHF telemetry receivers are specifically designed for use with conventional VHF transmitters. These receivers have a very narrow bandwidth coupled with a very fine tuning capability, extremely low noise front end, a broad dynamic range of signal reception, and specialized gain control that allows the user to reduce the signal levels so that a bearing can be established when using a directional antenna. This combination of specialized features is not found in commercial receivers used in other radio applications. Off the shelf or modified commercial receivers lack a number of important characteristics, including the sensitivity required to track the very low power transmitters used in VHF telemetry applications.

Telonics has manufactured conventional VHF radio telemetry receivers since the late 1960's. The first production model was the TR-1-10 receiver. Early "channelized" TR-1 receivers lead to the development of the first fully synthesized TR-2 receiver and the companion TS-1 scanner. This combination became the standard for radio tracking applications around the world and is still in use today. Although we continue to support repair of the TR-2 and TS-1 with available components, obsolescence of some components forced the cessation of new production in 1994.

The following table provides a selection of the current models of Telonics telemetry receivers currently available for use in the field. The tracking receivers include, the TR-4, a low cost programmable field receiver and the TR-5 designed for aircraft and data acquisition applications. In addition to the tracking receivers, the TVR-1 is small low cost test receiver. Also described is the TNR-3000 DSP noise reduction system designed for use with VHF telemetry receivers operating in high noise environments.

Models

Model	Description	Common Frequency Ranges	Size (in, cm)	Weight (g)
TR-5	Combined receiver and scanner, can be used in mobile or fixed site applications, data acquisition system available (option 320)	148.000-151.99 MHZ, 150.000-153.99 MHz, 162.000-165.99 MHz, 164.00-167.99 MHZ, 168.000-171.99 MHZ, 172.000-175.99 MHZ, 216.000-219.99 MHZ	7.0 x 4.35 x 2.45 17.8 x 11.1 x 6.2	1200
TR-4	Inexpensive, lightweight, easy to use receiver. Up to 100 channels can be programmed within a 4 MHz band	148.000-151.99 MHZ, 150.000-153.99 MHz, 162.000-165.99 MHz, 164.00-167.99 MHZ, 168.000-171.99 MHZ, 172.000-175.99 MHZ, 216.000-219.99 MHZ	6.75 x 3.5 x 1.75 17 x 9 x 4.5	425
TVR-1	Reliable lab or field test monitor, useful for testing transmitters prior to deployment or "exercising" during storage periods	145-170 MHz	4.5 x 2.7 x 1.3 11.4 x 6.9 x 3.3	155

Model	Description	Size (in, cm	Weight (g)
TNR-3000	Small, rugged, and lightweight for use in portable applications and at fixed sites. Will reduce background noise ("pink noise") by 15 to 17 dB, can be interfaced with any telemetry receiver through the audio headphone jack (an adapter may be necessary)	1.34 x 2.85 x 4.5 3.4 x 7.2 x 11.4	190

Legacy Products: We no longer sell these items as new, however they are supported (based on availability of components) and can be sent to Telonics for repair.