User's Manual
Table Of Contents
- Address: 6/F,17 Building, Guangqian Industrial Park, Longzhu Road, Xili Town, Nanshan Shenzhen, China
- SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT CO.,LTD
- 1 Product Description
- 2 Technical Specifications
- 3 Interface of the Radio
- 4 Application Instruction
- 5 Maintenance and Repair
Shenzhen Friendcom Technology Development Co., Ltd.
Appendix:
Modem debugging Instruction
When the GMKS or 4FSK modem is installed with the radio, users need to calibrate the data deviation.
The center frequency calibration is only necessary when the modem adopts DC coupling.
FC-302-4FSK
VR2，Deviation adjustment(TFSK signal level)
Debug wiring diagram:
Comprehensive tester
DC power supply
PC (personal computer)
Radio
Figure T1: Send the AT command by PC to activate the modem launching 01 code or PN9 code
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