Edited by author 02-21-2003 12:42 PM
As an "x" radio guy I can tell you that a barrage of short reasonable letters expressing your concern to the FCC has considerable impact.

Federal Communications Commission
445 12th Street SW
Washington, DC 20554
email

Example letter:
Dear Sirs,
I would like you to consider the terms of the Broadcast Flag mandate that the FCC is considering at the moment.
which my understanding would mandate that all digital television demodulators will have to be designed to be tamper-resistant (i.e., not GPLed).
Based on new internet technologies I think there should either be provision made for certain technologies (mentioned below), the mandate altogether stopped, or put off until further review of the technologies mentioned.
As a web development company convergence of technologies serves me and my clients as well as builds a future in local, national, and international trade. Premature Government regulation of these technologies impede progress.

Thank you for your consideration,

Sincerely,

x
address
somewheresville,state
zip
USA

technologies article

Well, I just sent them a fax (202-418-0232) with similar gist
but reworded. I did not mention GPL but did mention hobbyists.

So far the software defined radio idea has me quite excited,
but I am not a hardware hacker and I don't yet see how I can
use this myself. The homepage for the GNU radio project talks
about the card used, a Measurement Computing DAS4020/12, but
the measurementcomputing.com site doesn't have that card. The
cards that look like they might be similar (other DAS* cards)
are all pricy (four < $1000, cheapest ~$500; seven > $1000
going to ~$7000). Other radio cards I have found have been
in the > $500 range, too.