User's Manual

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RF Technology T800 Page 23
7 SPECIFICATIONS 7.4.2 Frequency Range and Channel Spacing
7.4.2 Frequency Range and Channel Spacing
Frequency 25 kHz 12.5 kHz
806-830 MHz T800A T800AN
850-870 MHz T800B T800BN
928-942 MHz T800C T800CN
7.4.3 Frequency Synthesizer Step Size
Step size is 10 / 12.5kHz or 5 / 6.25kHz, fixed, depending upon model
7.4.4 Frequency Stability
±1 ppm over 0 to +60 C, standard
±1ppm over -20 to +60 C, optional
7.4.5 Number of Channels
100, numbered 00 - 99
7.4.6 Antenna Impedance
50Ω
7.4.7 Output power
Preset for 2-15 or 2-25W depending upon model
7.4.8 Transmit Duty Cycle
100% to 40C, de-rating to zero at 60C.
100% to 5000ft altitude, de-rating to zero at 15,000ft.
7.4.9 Spurious and Harmonics
Less than 0.25µW
7.4.10 Carrier and Modulation Attack Time
Less than 20ms. Certain models have RF envelope attack and decay times controlled in the
range 200µs< t
r/f
<2ms according to regulatory requirements.
7.4.11 Modulation
Type - Two point direct FM with optional pre-emphasis
Frequency Response - ±1 dB of the selected characteristic from 300 - 3000 Hz