AL7LI's Shack

This is my equipment installation. I built the cabinet to accomodate the equipment and conserve space since it shares the control room of an audio recording studio. The equipment is basic stuff for HF, VHF, UHF voice and data.

The bottom left radio has a built in Terminal Node Controller (TNC) which uses AX.25 packet protocol at 1200 bps or 9600 bps. AX.25 is an Amateur Radio adapation of standard X.25 packet protocol. The radio is listening to the Automatic Position Reporting System (APRS) digipeater here in Anchorage.

The next radio to the right is a VHF/UHF dual band FM transciever which is used mostly for voice but I use the VHF side with the Multi Mode Data Controller (MMDC) just above for digital radio modes. The MMDC is a Kantronics KAM Plus and is similar to a TNC but can operate using several other digital modes in addition to the AX.25 protocol. I have interfaced it to the dual bander, Kenwood TM-733, and the HF radio, a Kenwood TS-450SAT. Here is a drawing of the cable pinouts for both radios. These cables may work with other Kenwood models but check it out before you make them.

The last and physically largest radio is a 100 watt HF transciever. I operate mostly voice Single Side Band (SSB), Radio Teletype (RTTY) and Pactor with the MMDC, on the 10-15-20-40 meter bands. I am using a Mosley TA-33 triband three element beam with a 40 Meter add-on kit. The 40 meter kit adds a 40m dipole on the driven element. The small box above the HF radio is it's computer interface used for remote control of the radio.

Not shown is a Yeasu FL-2100B linear amplifier. It provides 1KW of output.


Updated 5/20/2005