Above 100 GHz is used for imaging for security purposes. The 100GHz to 1THz is referred to as the TY band. ----- Original Message ----- From: "YES NOPE9" To: "Microcontroller discussion list - Public." Sent: Sunday, April 25, 2010 6:34 PM Subject: Re: [OT] Amateur Radio Bands > >> On Apr 25, 2010, at 4:18 PM, Michael Watterson wrote: >> >> solarwind wrote: >>> I've been looking at the Radio Amateurs of Canada band plans here: >>> http://www.rac.ca/en/rac/services/bandplans/allband.php and I see >>> them >>> listing the 5 GHz - 248 GHz. Do people actually use these bands? >>> What's the highest frequency that a radio amateur can practically >>> use? >>> >> 10GHz is quite cheap and popular. I have a commercial transceiver with >> UHF IF and integral 20dBi aerial panel that costs under 250 euro. >> I have a friend who has built 200GHz + gear. >> >> A 3/4" copper water pipe with SMA connector soldered in at side (and >> pin >> cut "just so") with end cap, second 1.5mm copper wire at right >> angles in >> front and then a 2nd SMA connector gives H & V waveguide. Saw LNB >> horn / >> lens off a 5 Euro LNB and ream to be a force fir on copper pipe. You >> now >> can couple the 10GHz to a cheap sat dish. A precision "cantenna" like >> the Pringles at 2.4GHz >> >> I replace the integral printed aerial with SMA sockets and then two >> short lengths of semi flexible silvered/aluminium? teflon? SMA plug >> cable (cheap surplus stock) Does over 25km range with 8MHz bandwidth >> signal 50mW QPSK. Add a power amp from Kuhne and have QAM16 at 50km >> hill >> top to hilltop with suitable dishes. That would be nearly 40Mbps data >> rate after FEC >> >> http://www.kuhne-electronic.de/en/ >> http://www.downeastmicrowave.com/ >> >> Above 10GHz is more expensive. >> >> Precision plumbing and SMT components and striplines rule! >> > > Michael, > Did your friend publish any pictures of his 200GHz gear ? > Gus > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist