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USB Interface II
Sale price: $159.00
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USB Interface Blok Diagram
 
These USB Interfaces provide a solution to the lack of available Serial (COM) ports on laptop and newer desktop computers for controlling your radio. 
 
The USB interface II includes full optical isolation of all control signals (radio control, CW,  PTT and Squelch) and high quality audio transformer isolation (with level trimmers) for audio to your radio's rear panel audio input and from the radio's constant level audio.
 
microHAM USB Interfaces have built-in hardware support for your radio - you no longer need additional level converters like CT-62, IF-232, FIF-232, CT-17.  The drivers include support for software CW keying (DTR) and PTT (RTS) - there is no need for additional interfaces. 
 
Unlike common mass market computer "USB to Serial adapters" our USB Interfaces are carefully designed for maximum immunity from strong RFI and at the same time be "RF quiet".  Each data line is low pass filtered for minimum interference.  
 
Package includes:  micro USB Interface II™, CD ROM with drivers, control software and manual,   USB A-B cable, two sound card cables, and one radio cable (specify your radio). 
 
Features and functions:

USB Interface Blok Diagram
 
   • No COM or LPT port necessary, just one USB port and sound card
   • Complete "Computer Radio" electrical isolation
- bidirectional transformer isolation between sound card and radio
- ALL digital signals: Radio Control, CW, PTT, FSK, and Squelch,
        optically isolated from USB port
   • Integrated computer control port for all radios CI-V, FIF-232, IF-232, RS-232
- fully supports Icom, Kenwood, Ten Tec, Yaesu and other radios
- no separate level converter required
   • Squelch input for signaling to computer
- two inputs, one is active low (closed to ground), second is
  active high (> +5V)
   • No external power adapter for most transceivers
- Computer part is powered from USB
- Radio interface is powered from transceiver or transceiver power supply
   • Strong immunity to RFI
- integrated chokes and filters for best RFI immunity
- advanced shielding and circuit design for RFI product suppression
   • Quick change connectors
- USB, Sound Card - 2 x 3.5mm (1/8")
- Radio - DB15
   • LEDs for easy visual feedback of CAT, CW, PTT, SQL
   • Metal/Aluminum case, powder coated and silk screened
   • Free software upgrades via the internet
 
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