The Futaba FDQ-02B RF modem module was recently developed for the moblie equipment market.

The FDQ is based on the FDL-01T. Functioning in the 2.4GHz band and utilizing Direct Sequence Spread Spectrum technology, as well as Frequency Hopping, this module includes all of the features of it's predecessor, as well as an output power amplifier for greater distance(Up to 1000 meters).

Radio specification

• Engineering standard : (Japan) ARIB STD –T66 : (U.S.A.) FCC Part15.247 : (Europe) ETS 300 328
• RF power output : Max 3.2 ～ 10.7mW
• Power intensity 0.07 ～ 0.23mW/MHz
• Modulation method : Spread Spectrum DS/FH Hybrid
• Band width : 44 MHz
• Communication method : Simplex operation
• Frequency band : 2400MHz～2483.5MHz
• Frequency hopping : OCC system
• Data modulation speed : 134kbps
• Oscillation : PLL synthesizer
• Reception sensitivity (BER10－３ ) : -92 ～ -97dBm (at room temperature)
• Service area : Indoor 60m : Outdoor 400m (The areas vary depending on the surrounding condition, including the height of the antenna installation)
• RF connector : Hirose U.FL-R-SMT
• Error check :CRC-CCITT (16 bits)
• Error correction :ＡＲＱ（Automatic retransmission request）
• Communication protocol : Packet Transmission mode : Header-less Stream mode

Peripheral interface:

• Physical interface : Molex 3780-1490(14 pins) Compatible connector 51146-1400
• Interface :RS-232C (DCE mode) compatible
• Input 3.0V CMOS level (5V tolerant with Hysteresis）
• Output 3.0V CMOS level
• Communication : Full duplex or half duplex
• Synchronization : Asynchronous
• Baud rate : 300/600/1200/2400/4800/9600/19200/38400/57600/115200bps
• Flow control : Hardware flow
• Data length : 7bits / 8 bits
• Stop bit : 1 bit / 2 bits
• Parity : even/odd/none

Electrical Specification

• Supply voltage : 3.5 - 7.0vdc
• Current Consumption : 110mA Max (During Transmission), 100mA Max (During Reception), 35mA Max (RF circuit off), 1mA Max ( standby mode)

Environmental Specification

• Operating Temp : -20°C - 50°C
• Storage Temp : -30°C - 60°C
• Operating humidity : 90%RH Max (Non Condensing)
• Storage humidity : 90%RH Max (Non Condensing)
• Vibration : JIS-C60068-2-6-1999 (50m/s² 10 - 50Hz 15 cycles)
• Shock : JIS-C60068-2-27-1995 (500m/s²)

End of an Era...
Well, he did it, Tom Herman decided to hang up his tools and venture into the world of retirement. His send off was Wednesday, June 25th 2008. It was held at "The Pines" golf course club house just up the road from the shop.