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- "PACKET RADIO" is a general term used to describe a form of data
- communications using Amateur Radio. Though there are many groups around the
- country using slight variations of the protocol, Northern California has by
- far the largest and most influential group -- the Pacific Packet Radio
- Society. See the submessages below for more details:
-
-
- To participate in the local repeater network, you will need at least a
- Technician Class Amateur Radio License. The FCC requires that you pass a 70
- question exam on amateur rules and regulations, operating procedures, and
- electronic theory. Also you must pass a morse code receiving test at five
- words per minute -- the speed at which most people learn the code. The test
- is administered weekly at the FCC offices in San Francisco.
- Among the other things you can do with this license are:
- 1) Operate using telegraphy with 250 watts or less on four of the
- amateur high frequency shortwave bands for long distance communications.
- 2) Enjoy full amateur privileges on the amateur bands in the VHF and
- UHF spectrum, including use of up to 1000 watts power, establishing
- repeaters, using telegraphy, radioteletype, facsimile, am, fm, ssb voice,
- slow scan television, fast scan (ordinary) television, and operate through
- the amateur satellites (called OSCAR for Orbiting Satellite Carrying
- Amateur Radio).
-
-
- These are the four basic components of a packet radio station in terminal
- mode for the existing local network:
- 1) 2-meter FM transceiver and antenna
- 2) Modem, Bell 202 standard (1200 baud half duplex)
- 3) Terminal Node Controller (see submessage)
- 4) Terminal
- Some stations have combined the Terminal Node Controller and terminal,
- using their personal computer as a dedicated TNC.
-
- The most common Terminal Node Controller is a single board design by the
- non-profit Vancouver Amateur Digital Communications Group. This board uses
- an 8085 CPU, 8250 UART for communications with the terminal, INTEL 8273
- packet controller, 4K or RAM, and 4K of protocol firmware. The cost of the
- board is about $250 fully populated plus the power supply.
- Other boards are in development stages by the Tucson packet group and
- others.
-
-
- A Bell 202 modem board has recently been completed by the VADCG. Watch this
- space for availability.
-
- This message copied from (415)863-7715 March 22, 1982.
-