Custom frequencies High-speed multimedia radio

1 custom frequencies

1.1 420 mhz
1.2 900 mhz
1.3 1.2 ghz
1.4 2.4 ghz custom frequencies
1.5 3.3 - 3.8 ghz
1.6 5.8 ghz custom frequencies

custom frequencies

using amateur-only frequencies provide better security , interference characteristics amateur radio operators. in past used easy use modified consumer grade hardware operate 802.11 on channels outside of normal fcc allocated frequencies unlicensed users still inside amateur radio band. however, regulatory concerns non-authorized use of licensed band frequencies making harder. newer linux drivers implement custom regulatory database prevents casual user operate outside of country specific operating bands. requires use of radio transceivers based on use of transverter (or frequency converter) technology.

420 mhz

doodle labs privately held manufacturing company headquarters in singapore designs , manufactures line of long range wireless data transceiver devices.

the dl-435 mini-pci adapter based on atheros wireless chipset.

xagyl communications canadian distributor of ultra high-speed, long range wireless equipment.

the xagyl communications xc420m mini-pci adapter based on atheros wireless chipset.

the atheros chipset s ability use 5 mhz transmission bandwidths allow part 97 operation on 420-430 mhz atv sub-band. (note 420-430 mhz operation not allowed near canada–us border. refer line rule.)

900 mhz

transverters using older 802.11 hardware such original nrc wavelan or fhss modems made aerocomm , freewave make possible operate on band. ubiquiti m9-series provide hardware capable in band. beware noise floor on band in larger cities high, severely limits receiver performance.

1.2 ghz

using icom id-1 1 can facilitate multi-media applications @ maximum of 128 kbit/s, compared 1 mbit/s or more other devices.

2.4 ghz custom frequencies

using professional grade hardware or modified consumer grade hardware possible operate on 802.11b/g hardware on channels 0 @ 2.407 ghz, −1 @ 2.402 ghz, , −2 @ 2.397 ghz. using these channels allows amateur operators move away unlicensed part 15 operators may interfere amateur radio satellite downlinks near 2.400 ghz , 2.401 ghz.

3.3 - 3.8 ghz

frequency conversion involves use of transverters convert operating frequency of 802.11b/g device 2.4 ghz band entirely. transverter technical term , used describe these products more commonly known frequency converters, up/down converters, , converters. commercially available converters can convert 2.4 ghz 802.11b/g signal 3.4 ghz (9 cm) band not authorized unlicensed part 15 users.

ubiquiti networks has 4 radios based on atheros chipsets transverters on board band. powerbridge m3 , m365 3.5 ghz , 3.65 ghz respectively aesthetically low profile ptp (point-to-point) connections. nanostation m3 , m365 in molded weatherproof case 13.7 dbi dual polarization antennas. rocket m3, m365 , m365 gps in rugged case using hi-power, linear 2x2 mimo radio 2x rp-sma (waterproof) connectors. nanobridge m3 , m365 long range ptp connections. these devices use n mode atheros chipsets along ubiquiti s airmax tdma protocol overcome hidden node problem commonly issue when using ptmp wireless outdoors. ubnt not allow sales u.s. amateurs , sell these radios under fcc license. may due exclusion areas near coasts , navy installations. 3.5 ghz band used dod or navy (shipborne , ground based) radar operations , covers 60 percent of u.s. population. may change due recent fcc nprm & order.

5.8 ghz custom frequencies

using professional grade hardware or modified consumer grade hardware possible operate on 802.11a channels 116–140 (5.57–5.71 ghz) , channels above 165 (> 5.835 ghz). these frequencies outside of fcc allocated part 15 unlicensed band, still inside of 5.8 ghz (5 cm) amateur radio band. modifying consumer hardware operate on these expanded channels involves installing after-market firmware and/or changing country code setting of wireless card. when buying professional grade hardware, many companies authorize use of these expanded frequencies small additional fee.