1.Introduction
Digital Modem can encode/decode
BPSK31/63, RTTY,
QPSK and CW
modes without PC, specially for portable
digital communication 。 With its internal high performance
DSP chips can process radio data。Internal SD card can save
the regular Logs and real time audio data(Including FFT data).
Its external USB host interface can be used for a USB
Keyboard 。 This modem use 12864 standards screen for
display, and AAs(or 4.2v lithium battery) for power.
Furthermore, this modem can freely download firmware to
upgrade new features.
Press B1+B2 1-2S is power ON/OFF
Cautions:
1.
DO NOT Enable “Force charge” when using AA
battery。
2.
Modem can not charge lithium battery when
volt<3.35v. Choose “force charge”.
3.
Modem begins charge when it turns on(judge
battery type by volt), power off automatically when
complete
。
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