Shenzhen Friendcom Technology Development Co., Ltd. FC-302 Data Radio User Manual Address: 6/F,17 Building, Guangqian Industrial Park, Longzhu Road, Xili Town, Nanshan Shenzhen, China Tel: +86-755-86026600 +86-755-23230518 Fax: +86-755-86026300 E-mail: support@friendcom.com Website: http://www.friendcom.cn SHENZHEN FRIENDCOM TECHNOLOGY DEVELOPMENT CO.
Shenzhen Friendcom Technology Development Co., Ltd. Content 1 Product Description.................................................................................................................................................2 2 Technical Specifications......................................................................................................................................... 3 3 Interfaces of the Radio............................................................................................
Shenzhen Friendcom Technology Development Co., Ltd. 1 Product Description FC-302 is a synthesized 5-watt FM transceiver module, which is designed for data transportation and voice communication. For the voice communication, it can support selected pre-emphasis, squelch and audio amplifier. The radio is PLL(Phase Lock Loop Synthesizer) /microprocessor controlled with optional GMSK modem.
Shenzhen Friendcom Technology Development Co., Ltd. 2 Technical Specifications General Specification Working Frequency 450MHz～490MHz Channel Spacing 6.25KHz/12.5KHz Programmable Modulation Type FM, GMSK Number of Channels 16 Nominal Working Voltage 12V DC Extreme Working Voltage 9.5 V～16V DC Storage Temperature -40℃～+80℃ Operating Temperature -30℃～+65℃ Current Consumption Standby ＜100mA Transmit 5 watts RF Power ＜1.
Shenzhen Friendcom Technology Development Co., Ltd. Receiver Specification RX Sensitivity (12dB SINAD) ＜-119dBm ACS ＞70dB Image Rejection ＞70dB IF Rejection ＞70dB Spurious Rejection ＞70dB Intermodulation Suppression ＞65dB Conducted Spurious Emission ＜-57dBm Receiving Audio Distortion ＜5% RX SNR 6.25KHz Channel Spacing ＞30dB 12.5KHz Channel Spacing ＞40dB Audio Output Power Extreme＜-115dBm 0.5W @ 8Ωload 3 Interfaces of the Radio DB-15 are our basic interfaces of FC-302 radio.
Shenzhen Friendcom Technology Development Co., Ltd. Data transmission DB15 interface As shown in above picture, the pin definition of CON-14-FEMALE is related with internal devices (Modem board or Bridge board). Refer to Table 1. Table 1 Internal bridge Internal modem CON-14-PIN1 TFSK GND CON-14-PIN2 RXD(RADIO) RXD(MODEM) CON-14-PIN3 EXT_PTT EXT_PTT CON-14-PIN4 TXD(RADIO) TXD(MODEM) CON-14-PIN5 RFSK CD_OUT CON-14-PIN12 GND GND CON-14-PIN14 NC +12V（B+/9.
3.1 Interface for Voice Transmission Standard DB15 is only used for voice transmission. Pin 10～Pin15 on DB15 is used for extending the optional function of the channel meanwhile bring out the hardware serial port. The pin definition is shown in Table 2. Table 2 Pin Name AUDIO_IN Pin No. on DB15 Description 1 Audio input. 3Khz sensitivity is 100mW AUDIO_OUT (AF OUT) 2 PTT 3 GND 4 Audio output; 3Khz LPF; Output level at 60% frequency deviation is 100±30mV.
Shenzhen Friendcom Technology Development Co., Ltd. 3. 2 Interface for data transmission As to FC-302 with internal modem, the pin definition is shown in Table 3. Table 3 Pin Name AUDIO_IN Pin No. Decription Remark 1 （MOD IN） Audio input. 3Khz LPF, Modulation sensitivity is 100mW Audio output, 3Khz LPF. Output level at 60% frequency deviation is 100±30mV. This line has an internal pull-up resistor to +5V. TX control，active low, only when PTT is active AUDIO_IN and MIC IN are effective.
Shenzhen Friendcom Technology Development Co., Ltd. FC-302-GMSK modem 3.3.
Shenzhen Friendcom Technology Development Co., Ltd. Microsoft Windows XP & Windows 7 Communication Port One available communication port (COM1, 2, 3 or others) Hardware Accessories Programming cable(RS232 to USB) Programming kit 4.1.2 Connecting to Data Radio Connection between the PC and the radio for parameter setting The programming kit is used for connection as shown below. Descriptions No.
Shenzhen Friendcom Technology Development Co., Ltd. For data transmission test with GMSK modem, the jumper’s position need to be changed shown as below. 4.2 Operation Instruction Detailed instruction for channel and system configuration is described. Especially, in input channel data, data input method for Rx,Tx frequency, Rx,Tx option such as CTCSS, DCS, scan and bandwidth is explained specifically.
Shenzhen Friendcom Technology Development Co., Ltd. First of all , open the con port. The CON port is with characteristics of 9600bps, 8N1 and click “Open” as picture shows.
Shenzhen Friendcom Technology Development Co., Ltd. If user puts mouse cursor on the each icon in tool bar for a second, message for function indication is displayed. Power on the radio, after 5 seconds, click on the "Read", establish the communication with PC and radio. As the following picture: Warning: 1.
Shenzhen Friendcom Technology Development Co., Ltd. within 120 seconds after last operation, user should restart the radio for setting. 2. The BUSY signal, SWITCH and CTCSS/DCS will only be available after 2 minutes when user finish programming setting 4.2.2 Input Channel Data In this option part, user can input channel selection from 1 to 16, Rx,Tx frequency, Rx,Tx tone option such as CTCSS, DCS, power, switch and make SCAN list, and choose bandwidth, Narrow or Wide according to each channel. Fig.
Shenzhen Friendcom Technology Development Co., Ltd. User can decide the channel spacing in this feature with optional 6.25KHz (Narrow) or 12.5KHz (Wide) channel spacing. 4.2.2.3 SQ level Five SQ levels can be select in our radio. Level 0 is for fully open mute. The audio signal will continuously transmit. Other levels with corresponding strength are shown as below: L1: 0.15uV L2: 0.25uV L3: 0.35uV L4: 0.45uV L5: 0.55uV 4.2.2.
Shenzhen Friendcom Technology Development Co., Ltd. CTCSS/DCS User can encode tones with CTCSS/DCS according to options shown in the picture. The feature is not available for high speed data transmission. Switch When we use radio remote: the Switch function can be use to change a logic from +5V to 0V minimum. The judging condition is long period of 260Hz, sine wave 300 Ms. 4.2.2.5 Scan This feature allow user to decide scan mode and establish channel scan list.
Shenzhen Friendcom Technology Development Co., Ltd. 4.2.3.3 Second Column Features 4.2.3.3.1 Volts Protection If the power supply of the radio is lower than low volts, the radio will stop working and only monitor the power supply. Once the power supply become higher than High volts, the radio can start to work again. The recommended Low volt is lower than 9V. The recommend High volt is 13.8V. 4.2.3.3.2 TX Protection This feature, when enabled, limit the amount of time that user can continuously transmit.
Shenzhen Friendcom Technology Development Co., Ltd. Power Save Time When Power save is enable, sleep time can be programmed from 20 to 500 ms in 20ms increment with 1~25 optional values. That means 1 equals to 20 ms, 2 equals to 40ms ....... 25 equal to 500ms Standby time can also be programmed from 40 to 600 ms in 40ms increment with 1~15 optional values. That means 1 equals to 40ms, 2 equals to 80, ..... 15 equals to 600ms. 4.2.3.3.
Shenzhen Friendcom Technology Development Co., Ltd. Scan modes are set up in “Option” and shown as below 0 ---------normal scan with carry only 1 ---------normal scan, carry with tone 2 ---------priority scan, carry only 3 ---------priority scan, carry with tone If normal scan is enabled, radio will scan from initial channel to channel 16 sequentially. If priority scan is enabled, radio will scan the prioritized channel with more times. Prioritized channel is the working channel before the scan.
Shenzhen Friendcom Technology Development Co., Ltd. Fig. 18 Exterior View 5.2 Removing & Replacing the Upper Cover Removing the Upper Cover 1. Unscrew the four upper cover mounting screws located on the upper cover of radio To replace the Upper Cover 1. Reserve the steps taken to remove the Upper Cover. Fig. 19-Upper Cover Removal 5.
Shenzhen Friendcom Technology Development Co., Ltd. 5 Remove the Shield Plate. To replace the Main board & Power board Assembly: 1. Reserve the steps taken to remove the Main board Assembly & Power board & Shield Plate. Fig. 20-Power board & Modem board Assembly Removal Fig. 21-Shield Plate Assembly Removal 5.
Shenzhen Friendcom Technology Development Co., Ltd. Fig. 21-Main Board Removal 5.5 Repairable/Replaceable Parts List Fig.
Shenzhen Friendcom Technology Development Co., Ltd. 6 Accessories Available Please contact the Friendcom sales team for accessory information. sales@friendcom.
Shenzhen Friendcom Technology Development Co., Ltd. Appendix: Modem debugging Instruction When the GMKS 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.
Shenzhen Friendcom Technology Development Co., Ltd. Comprehensive tester DC power supply Radio Figure T2: User activate the modem launching 01 code or PN9 code by TRS pin. Debugging method-1 Connect the devices according to the figure T1 shows. The VFF (Voice Frequency Filter) should be programmed as 20Hz-15KHz. DC power supply provide a voltage of 12V/2A. A serial debugging software sends the AT command to the radio.
Shenzhen Friendcom Technology Development Co., Ltd. The second method is easy to conduct. But the channel and coupling mode. The radio should be under wide band channel spacing for frequency deviation calibration. Debugging： Connect the devices according to the figure T2, SW (Switch) is connected between the STS (Pin 12) and GND. Close the SW in 30 seconds after the radio is powered up. Then the radio starts to transmit. User adjust the frequency deviation to 3.3-3.
