FC-301/D RF Link Module USER MANUAL SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT CO.,LTD ADD: 6/F, 17 Building , Guangqian Industrial Park, Longzhu Road, Xili Town, Nanshan, Shenzhen City 518055 P.R.CHINA. TEL: +86-755-86026600 +86-755-86026192 E-MAIL : faq@friendcom.com WEBSITE: www.friendcom.
MANDATORY SAFETY INSTRUCTIONSTO INSTALLERS AND USERS z Use Only manufacturer or dealer supplied antennas. z Antenna minimum safe distance: 35 cm. z Antennas used for this transmitter must not exceed an antenna gain of 3 dBi. The FCC (Federal Communications Commission) has adopted a safety standard for human exposure to RF energy which is below the OSHA (Occupational Safety and Health Act) limits.
TABLE OF CONTENTS TABLE OF CONTENTS .....................................． 01 ．． INTRODUCTION...........................................02 FEATURES................................................02 SPECIFICATION ...........................................02 WIRING DIAGRAM.........................................8 TROUBLESHOOTING GUIDE................................10 FACTORY DEFAULT SETTING ..............................
INTRODUCTION The FC-301/D RF Link Modules from Friendcom utilizes the latest technology in its design and manufacturing. It’s PLL (Phase Lock Loop Synthesizer) / microprocessor controlled, and offers one to five watts of power with 16 channel capability. Multiple functions including AC audio coupling, 1200 to 9600 baud rates GMSK and FSK modulation capability are standard in this fully programmable wide bandwidth RF Link Module units. FEATURES ● 16 Channels ●1 - 5 Watt Programmable RF Output ●12.
RF Output Power……………………………….1W - 5W Programmable Modulation type ………………………………..16K0F3E,8K5F3E Intermediate Frequency………………………… 45.1MHz & 455KHz Number of Channels…………………………….16 Frequency Source ……………………………….Synthesizer Operation Rating…………………………………Intermittent 5:5:90 ( TX: RX: Standby ) Power Supply ……………………………………12.
TRANSMITTER Sustained Transmission…………………………… Nominal conditions Time: 5 Power: >95% 10 30 sec >95% >90% Frequency Error…………………………………..±2.5 ppm Frequency Deviation: 25kHz Channel Spacing……………………..≤±5.0kHz, 12.5kHz Channel Spacing……………………≤±2.5kHz, Audio Frequency Response……………………. Within +1/-3dB of 6dB octave @300Hz to 2.55kHz for 12.5kHz C.S @300Hz to 3.0khz for 25kHz C.S Adjacent Channel Power 25kHz…………………………………………< 70 dBc @ Nominal Condition <65 dBc @ Extreme Condition 12.
Modulation Symmetry ……………………………..<10% Peak Dev@1kHz input for nominal dev +20dB Load Stability……………………………………No osc at >= 10:1 VSWR all phase angles and suitable antenna No destroy at >= 20:1 all phase angle RECEIVER Sensitivity(12dB Sinad) ………………………….UHF <-117 dBm, VHF<-118dBm@Nom.Condition Amplitude Characteristic………………………….<±3dB Adjacent Channel Selectivity: 25 kHz Channel Spacing …………………….≥70dB @ Nom. 12.5kHz Channel Spacing…………………….≥60dB@Nom.
25.0kHz CP……………………………………………< 40dB No PSOPH 12.5kHz CP ………………………………………..…< 40dB with PSOPH Receiver Response Time …………………………….< 20ms Squelch Opening sensitivity: ………………………-118dBm Squelch Closing sensitivity ……………………….. -121dBm Squelch Attack Time: RF Level at Threshold ………………………… <40ms RF Level at Threshold +20dB…………………<30ms L.O. Frequency Temperature Stability…………….1 st <2.5 ppm, 2 nd <10 ppm for –30°C to +60°C L.O. Frequency Aging Rate………………………….±2 ppm/year REFERENCE CRYSTAL Frequency………………………………………………….
Operating………………………………………………….-30° to +60°C Degradation Specified@Extreme Storage …………………………………………………… -40°C to +80°C Recharging ……………………………………………… -10 to +55 ESD……………………………………………………….
WIRING DIAGRAM - 10 -
Pin Function Type Pin 1 Audio TX) Pin 2 Audio out (Data Output RX ) 150mV-250mV Demodulation Output Pin 3 PTT 0 V/+5V in(Data Input Input Range 200VP-P 300VP-P Description ------ External Modulation Input Transmit Enable 0V - Radio in Transmit status 5V Radio status(Default ) in receive Pin 4 GND GND 0V GND Pin 5 B+ V+ 10-15V Power Supply(+12.5V typical ) Output Open/Short RF Carrier Detect Pin 6 SQ Open -- low level, Short -- high level (Default).
TROUBLESHOOTING GUIDE SYMPTOM S Unit does not work Bad RX Sensitivity CAUSES 1.No power incomplete connection 2. No input voltage of 5V or 8V 3. CPU does not work 4. EEPROM fail 5. Channel error 6. PLL error 1.Antenna signal short-circuit 2.Antenna signal open-circuit 3. Bad electronic turner 4. Defective high frequency amplifier 5. Bad mixer 6. Local signal amplitude become small 7. Bad 1st and 2nd intermediate COUNTERMEASURES 1.Check COM1 connection 2. Check IC500、IC504 3. Check IC510 4.
FACTORY DEFAULT SETTING FC-301/D VHF RF Link Module Channel RX Frequency RX Tuning Value (TV) TX Frequency TX Tuning Value (APC) 1 136.1250MHZ 0 136.1250MHZ 185 2 138.1250MHZ 0 138.1250MHZ 185 3 140.1250MHZ 0 140.1250MHZ 185 4 143.1250MHZ 0 143.1250MHZ 185 5 145.1250MHZ 0 145.1250MHZ 185 6 147.1250MHZ 0 147.1250MHZ 185 7 150.1250MHZ 0 150.1250MHZ 182 8 153.1250MHZ 0 153.1250MHZ 182 9 155.1250MHZ 0 155.1250MHZ 182 10 157.1250MHZ 0 157.
