Telonics MK9A Licensed Non-broadcast transmitter User Manual 353573

Telonics Inc Licensed Non-broadcast transmitter 353573

Contents

Revised Manual

Instructions for use of MK9A Transmitter 1 Contents: I. Introduction II. Operation - Antenna - On/Off function - Programming and Initialization I. Specifications II. RF exposure statement I. Introduction: The MK9A transmitter is a portable, low power, single-frequency, pulsed transmitter designed for rugged service in a variety of environmental conditions. The transmitter and a 3.6V lithium battery are housed in a hermetic canister, with a mounting tab for convenient mounting. The 18” long permanently attached antenna is made of flexible, Teflon [PTFE] coated wire. The MK9A emits a train of unmodulated RF pulses, with pulse width, pulse period, and frequency factory configurable. For operation under MURS rules, the transmitter may be factory programmed to any of the following frequencies (151.820, 151.880, 151.940, 154.570, and 154.600MHz). II. Operation: Antenna – The MK9A antenna is constructed of PTFE coated multi-strand stainless steel cable and is designed for easy deployment in a variety of configurations. Note that best radiated power will be obtained when the antenna is deployed in open air, away from conductive objects. The antenna can be coiled, placed near conductive objects, or otherwise compacted without damage to the unit. However, the effective range of the transmitter may be reduced as a result. On-Off Function – The only user-controlled feature of the MK9A is the on-off function. Placing a magnet over the arrow marker on the package (see fig 1a) causes the transmitter to shut down. Removing the magnet initiates the transmitter. Note that the transmitter indicates a clean restart by sending a series of 5 pulses in rapid succession when the magnet is removed. Programming and Initialization – The following parameters of the MK9A are factory configurable: - Frequency (select from any of the 5 MURS frequencies) - RF Pulse Width (15-250msec) 20msec standard - Pulse Period (400-2000msec) 800msec standard Maintenance- Since the MK9A is sealed in a hermetic package, it is not user serviceable. Contact the factory for reprogramming or battery replacement. Notice for portable use: This device should only be used at a distance of 20cm or more to comply with FCC's R.F. Hazard Exposure requirements.
Instructions for use of MK9A Transmitter 2 III. MK9A TRANSMITTER SPECIFICATIONS: Available Frequencies 151.820, 151.880, 151.940, 154.570, 154.600MHz Frequency Tolerance ±2ppm over operating temperature range Temperature Range Operating: -30 to +50°C Storage: -40 to +60°C Modulation Type 1k0N0N (Unmodulated RF pulses) Pulse Width 20msec standard (15-250msec upon request) Pulse Period 800msec standard (400-2000msec upon request) Power Output 20mW maximum peak at 3.6V supply into 100Ω load Harmonic Suppression better than 40dB Spurious Emissions <-40dBc Power Supply Internal 3.6V Lithium Cell (factory replaceable) Battery Lifetime More than 3 years continuous operation* *Standard Pulse Width and Pulse Rate. Lifetime will vary with pulse width and pulse rate settings Dimensions Housing: 3.0 x 2.0 x 1.5” (76 x 51 x 38mm) Mounting Tab: 4.55 x 1.6 x 0.03” (116 x 41 x .08mm) Mounting Holes: 4ea / 0.20”dia, 4.05 x 1.00” pattern Antenna: 18”L x 0.087”dia (450mm L x 2mm dia) (multi-strand stainless steel whip, PTFE insulation)
Instructions for use of MK9A Transmitter 3 Figure 1: External Views fig 1a) Magnet Arrow Marker Location – Magnet shown in place (transmitter ‘off’) fig 1b) FCC and Manufacturer ID labeling

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