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Radio Nature -- Now Shipping! -- The reception and study of naturally originating radio signals.

Amateur Radio Astronomy -- Explore the contributions of radio amateurs, and how to make and set up equipment to study the signals coming from space.

Nova for Windows -- A popular Windows-based satellite tracking program, used by thousands of hams. Realistic maps show satellite positions, ground tracks, orbital paths, and star background.

The ARRL Image Communications Handbook -- Use Amateur Radio to see and talk with other hams! Enjoy the imaging modes: NBTV, ATV, SSTV and WEFAX.

The ARRL Satellite Handbook -- First Edition. Explore, track and operate ham radio satellites!

§97.309(a)(4) Technical Descriptions

This is a one-stop Web site for technical characteristics called for in FCC rules § 97.309(a)(4), which reads:

(4) An amateur station transmitting a RTTY or data emission using a digital code specified in this paragraph may use any technique whose technical characteristics have been documented publicly, such as CLOVER, G-TOR, or PacTOR, for the purpose of facilitating communications.
Documentation should be adequate to (a) recognize the technique or protocol when observed on the air, (b) determine call signs of stations in communication and read the content of the transmissions. Click on names of the techniques already documented:



Page last modified: 10:03 AM, 03 Aug 2009 ET
Page author: w4ri@arrl.org
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