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USCC>4 card

The BayCom USCC>4 is a universal 16 bit slotcard for IBM's standard ISA bus. The basic card integrates the digital part and four generic modem slots. In each of them, a piggy-back modem can be inserted. There are different modems for all baud rates used in today's packet radio operation. All modems can be combined randomly. Thus, the USCC>4 is the basis for a universal packet radio station, growing with the user's requirements. In the following, the basis card and the modems available are described in detail. We only added some schematics to keep this file small. For more information on the card jump to the BayCom Web site.

AAPRA have available the following products:

  • USCC>4 basis card without modems, assembled incl. BayCom software. Press here for a picture.

  • TCM3105 Modem for USCC>4, assembled

    This modem is used for Bell-202 operation with 1200Bd, as used on the VHF/UHF bands worldwide. The baudrate can be boosted to 2400Bd by crystal replacement. Our low - cost standard modem for the USCC>4. On-board LED for PTT control. Press here for a picture.

  • AM7911 Modem for USCC>4, assembled.

    This modem features two operating modes: 1200 Bd according to Bell-202 as used on the VHF/UHF bands and 300Bd according to Bell-103, as used on the HF bands. A jumper allows switching between both modes. Two different frequency offsets for Bell-103 and equalizer operation for Bell-202 are also selectable via a jumper. By connecting two external LEDs, the modem provides a simple tuning indicator for HF. An additional LED is on board for PTT control. Press here for a picture.

  • DF9IC-Modem for USCC>4, assembled.

    This modem is made very compact by extensive use of SMD components. It is an FSK modem for 9600Bd, fully G3RUH compatible. By replacement of five capacitors, baudrates of 19200 or 38400 can be achieved also. There is an on board LED for PTT control. It has loopback and bit error test facilities. Press here for a picture.

  • USCC>4 basis card with above three modems, assembled incl. BayCom software.

Other information

There have been: BayCom count accesses since 23/12/98
Last update to this page: 22/2/00