specification modulation method: ofdm
band width: 300 hz - 2500 hz, 36 carriers
symbol rate: 20 ms (50 baud)
guard interval: 4ms
tone steps: 62.5 hz
modulation method: 36 carriers: dqpsk (3.6k)
afc: +/- 125 hz
error correction: voice: golay + hamming
video/data: covolution + reed-solomon
header: 1 sec. 3 tones + bpsk training pattern for synchronization
digital voice: ambe2020 coder, decoder
signal detection: automatic digital detect, automatic switching
between analog mode and digital mode
video compression: aor original adaptive jpeg
video: ntsc input/output
power requirements: 10 ~ 16 v dc, approximately 200 ma typ(@ 12 v dc)
6 v dc by internal jumper setting
serial port: rs-232c, 9600 bps, asynchronous
dimensions (w, h, d): 100 x 32 x 158 (mm)
or 3.94 x 1.26 x 6.14 (inches) (projections excluded.)
connectors: radio: microphone output (level adjustable)
speaker input (500 mv ~ 5 v p-p), ptt (push to talk)
video in/out: ntsc 1 v p-p (75 ohm)
mic: microphone input, speaker output, ptt input
others:: signal encryption for commercial applications
(where permitted; special commercial version required)
analog/digital mode selector
video capture/transmit switch
