Shenzhen Friendcom Technology Development Co., Ltd. FC-302 U2 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.
Content 1 Product Description ......................................................................................................................................... 3 2 Technical Specifications ................................................................................................................................... 4 3 Interfaces o f the Radio ....................................................................................................................................
Shenzhen Friendcom Technology Development Co., Ltd. 1 Product Description FC-302 U2 is a synthesized 5-watt FM transceiver module, which is designed for 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. The application of two-point modulation with good low-frequency response in the radio also makes it a competitive choice for audio applications.
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 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. RX Sensitivity (12dB SINAD) <-119dBm Extreme<-115dBm 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 0.
Shenzhen Friendcom Technology Development Co., Ltd. Table 2 Pin Name Pin No. Pin No. on On DB9 DB15 Description LPF; Remark AUDIO_IN (MOD IN) 1 1 Audio input. 3Khz sensitivity is 100mW Modulation AUDIO_OUT (AF OUT) 2 2 PTT 3 3 GND 4 4 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. This line has an internal pull-up to 5V.
Shenzhen Friendcom Technology Development Co., Ltd. 4.1.1 System Requirements Computer Normal personal computer or faster (recommended) Operating System 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 Connection between the PC and the radio for parameter setting The programming kit is used for connection as shown below. No.
Shenzhen Friendcom Technology Development Co., Ltd. 4.2 Operation Instruction Detailed instruction for channel and system configuration is described. Especially, in input channel signal, signal input method for Rx,Tx frequency, Rx,Tx option such as CTCSS, DCS, scan and bandwidth is explained specifically. In addition, system option such as selection of squelch type, data value setting for power saving mode, Tx time out time, scan option is detailed. 4.2.
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 Setting 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 voice 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. 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. For example, if prioritized channel is CH10 and initial channel is CH8, then the scan sequence is CH8, CH10, CH9, CH10, CH10, CH10, CH11, CH10.....CH16, CH10. 4.2.4.4.
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 & Bridge 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.com Tel: +86 755 23230544 FCC Radiation Exposure Statement: This equipment complies with RF exposure guidelines.This equipment should be installed and operated with minimum distance 100cm between the radiator& your body. The device supports The highest gain of antenna is 5.0dBi.