Amateur Radio Packet Over 802.11 Cards

Skuld-Chan writes: "I stumbled across this the other day -- basically discusses modifying common 802.11 boards for amateur radio bands (or Part 97 rules). Under Part 97 there is a 100 watt limit and no gain limit (unlike the 6 db gain limit on Part 15). I thought it was interesting :)." Consult your friendly branch of the FCC :) Note that this is just one of several interesting projects from this site.

Comments

Re:I'd recommend against it!

[OverCode@work]

One of the privileges of an amateur radio license is modifying radio equipment with the intent of operating it on amateur frequency ranges. This is why amateur radio requires a license -- if you don't know what you're doing, you can cause serious problems. The FCC places a lot of trust in ham operators by essentially giving them a blank check for experimentation.

So yes, hams are allowed to hack wireless cards to work on their frequencies. They're expected to know what frequencies they may use, how much power they're putting out, how to resolve any resulting interference, and so forth.

BTW, it is not very difficult to get a ham license. Contact your local radio club, or have a look at http://www.arrl.org. Just takes a bit of reading, $10, and a 35-question multiple choice exam.

-John, KG4RUO

Re:100 Watt wireless router?

[Perdo]

I was witness to a darwin award winner who unlatched a waveguide and looked into the rectangle end. He said "hey, there's hot air blowing out of here". I looked at him to see what he was talking about, then destroyed two klystrons by slapping the main power breaker. Klystrons need cooling air to prevent them from cracking and implodeing after the driving voltage is removed from them.

This warm air is also bled into the waveguide itself to drive out any moisture that would impede your signal.

You see, the guy looked straight into a waveguide pumping out 2000 watts at 4.7 Ghz that required 30,000 watts of 480 volt 3 phase AC to generate.

And that dude, well, that dude was dead before he finished the word "here"

AN/TRC-170 V2 Army/Airforce Mobile Troposcatter. Baddest pair of micky mouse ears you will ever see on a battle field. Two 81 db gain 10 foot dishes, 10 feet in the air, and 10 feet apart. 560 foot danger zone in front of the dishes. After a few days transmitting, the ground in front of the dishes would be littered with the corpses of birds, rodents and the scavengers that came for the easy meals.