Radio modems

=== pharosantenna ===
http://diydrones.com/profiles/blogs/cool-pixhawk-compatible-long-distance-directional-radio Pharos matches a dynamic directional (beam shaping) radio on the air with another on the ground, with the two tracking each other for multi-mile range for video and telemetry. Coming to Kickstarter in 2-3 weeks. The Pharos is a newly-developed smart antenna. Unlike conventional omni-directional antennas that waste energy in all directions, the Pharos concentrates the available power where you need it most. Working in conjunction with the Pixhawk autopilot (a version with its own autopilot is being also developed), the antenna activates the side facing your UAV, boosting reception and range. A second Pharos can also be used on the aircraft, quadrocopter or UAV, keeping ground control in aim at all times. The Pharos is also circular-polarized, granting immunity to polarization losses and multipathing signals, an optimum choice for challenging environments.
http://www.pharosantenna.com/
=== Long range radios china ===
http://www.bevrc.com/
=== One Watt ===
http://www.radiolabs.com/products/wireless/seed-usb-wifi-adapter.php One watt power amps
=== FPV ===
http://www.readymaderc.com/store/index.php?main_page=product_info&cPath=11_30_38&products_id=921
=== Notch filter ===
http://aglhobbiesllc.corecommerce.com/OMM-1280-MHz-Dual-Notch-Filter.html
=== Wi-fi radios ===
http://diydrones.com/profiles/blogs/open-source-embedable-low-cost-wifi-board-used-for-arducopter
=== 3dr radios ===
http://diydrones.com/profiles/blogs/announcing-the-3dr-radio-telemetry-system
=== Cell modem ===
* http://diydrones.com/profiles/blogs/releasing-the-shackles-part-2-ground-testing
* ImageProcessing#Video_over_cellular 3g www.skydrone.aero model
* http://www.instructables.com/answers/3G-to-Wi-Fi-portable-converter-on-the-cheap/
=== Microwave ===
http://www.alligatortech.com/default_low_pass_filter.htm
http://www.adv-mic.com/home.html
http://www.polyphasemicrowave.com/quadmod.html
=== trade journals ===
 * http://www.rfdesign.com
 * http://www.sss-mag.com/
 * http://www.rapidm.com/contact.shtml Danie v. Wyk
=== Radio hobbyists ===
* http://www.rudius.net/oz2m/70mhz/transverter.htm BF988 transistor used in FreeSpaceOptics
=== radio modems ===
 * SoftwareDefinedRadio See Ettus research for 2.4ghz modems
 * http://www.radio-tech.co.uk
 * http://www.racom.eu
 * http://www.1stop-radio.com
 * http://www.pribusin.com/p_tel.html Telephone line surge protector
 * http://www.triodatacom.com/ 
 * http://www.raveontech.com/data_radio_solutions.html 20 Mile radios
 * http://www.qwizdom.co.uk
 * http://www.SECO-LARM.com
 * http://www.paccomm.com/
 * http://news.directindustry.com
 * http://www.supercircuits.com/index.asp?PageAction=VIEWPROD&ProdID=4238
 * http://www.lprs.co.uk
 * http://www.sda-falcon.co.uk
 * http://www.bitztechnology.com
 * http://www.radiotelemetry.co.uk
 * http://www.mipot.com
 * http://www.mavin.com Military and RF
=== RC hobby telemetry ===
http://www.xtremepowersystems.net/
http://hobbywireless.com./cart/ Also sells QuadroCopter
=== RF power amplifiers ===
 * http://www.ramseyelectronics.com/site/default.asp?search=LPA-1&page=search&x=0&y=0 LPA-1 100khz - 1gig
 * http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=MXR5842C Pinhbole camera
=== GPS and GPRS ===
 * GpsAndGprs
 * http://www.roundsolutions.com
 * http://www.m2mtelemetry.com
=== RF consultants ===
 * http://dspace.dial.pipex.com/town/way/yko08/home.htm Waterbeach electronics
 * http://www.analog-innovations.com/
=== Small radios ===
 * http://www.frontier-silicon.com/
=== Aerial video systems ===
 * http://rangevideo.com/ RC electronics video transmitter 1watt 2.4ghz 10km range
 * http://www.rangevideo.com/index.php?main_page=product_info&cPath=48&products_id=131 With VideoGoggles
 * http://www.dc-rc.org/star.htm
 * http://www.cam4spy.de/
 * http://www.dl1ie.de/
 * http://www.mh.ttu.ee/risto/rc/logo20/wvideo/index.htm
 * http://www.lechner-cctv.de/
 * http://www.intellicamsystems.com
 * http://www.rf-video.com/products%5Camplifier24.html
 * http://www.wirelessVideoCameras.com 
Reverse engineer the http://rangevideo.com circuit and configure it for 1ghz. There are companies in China that can
reverse engineer any PCB with a CAD robot. 
=== Papparazi UAV modems ===
 * from http://www.recherche.enac.fr/paparazzi/wiki/index.php/Modems
 * http://www.zigbee.org/en/index.asp 2.4ghz datalink
 * http://www.maxstream.net/products/xtend/oem-rf-module.php Maxstream 900mhz modem
 * http://www.aerocomm.com/rf_transceiver_modules/ac4790_mesh-ready_transceiver.htm
 * http://www.coronis-systems.com/produit.php?lang=EN&id=WCA Not recommended
=== 135 Mhz ===
http://www.racom.eu/eng/products/narrowband-modems.html
=== 173 Mhz ===
 * http://www.rfdesign.co.za/pages/5645456/Products/VHF-Wireless-Products/Narrow-band-FM-transceiver.asp
=== 433 mhz ===
Arduino_code#pi_pico raspberry 433mhz datatransmission using 433mhz modules 
http://www.rfxcom.com usb data terminal, used with http://lea-linux.org/documentations/Accueil 
http://www.rfdesign.co.za/pages/5645456/Products/433-MHz-Wireless-Products/433MHz-Radio-Modems.asp South Africa 
http://www.rfdigital.com/ 
http://www.datahunter.com 
http://www.abacom-tech.com 
http://www.lprs.co.uk/ 
http://www.glolab.com/ 418mhz 
http://www.lemosint.com/scripts/zigbee_etrx_module.asp Zigbee modules 
http://www.xbow.com/Products/productdetails.aspx?sid=156 Zigbee 
http://www.circuitdesign.co.jp/eng/default.asp 
http://jap.hu/electronic/codec.html 
http://www.xls.co.uk 
http://www.radio-tech.co.uk 
http://www.iprs.co.uk 
http://www.linxtechnologies.com/ldocs/f_prod.html 
http://www.polarisusa.com 7cm flat screen module p.11 June 2001 Nuts and Volts 
=== Australia 915MHz - 928MHz ===
 * http://www.aerocomm.com/rf_transceiver_modules/ac4790_mesh-ready_transceiver.htm
 * http://www.xecom.com/
=== 902 - 928 Mhz ===
 * http://www.digi.com/products/wireless/point-multipoint/xbee-pro-xsc.jsp Xbee 900mhz
 * http://www.freewave.com/files/datasheets/FGRO9SE%20.pdf 60 mile LOS
 * http://www.triodatacom.com/scada_telemetry.php 1 Watt 900Mhz
=== Europe 868MHz , 863, 865Mhz ===
 * http://www.cdt21.com Sound transmitters in 863Mhz band
 * http://www.xbow.com/Products/productdetails.aspx?sid=156
 * AC4869-250
 * Frequency Band 868MHz (For Europe). 
 * http://www.roundsolutions.com Radio modem on 863Mhz with Bluetooth
=== 1.4ghz and 1.3ghz band ===
 * http://www.freewave.com/files/datasheets/LRS140CSU.pdf
 * http://www.rangevideo.com/index.php?main_page=index&cPath=35_36&zenid=23b038fd44b48a84f2d8ab22f26d7536
=== 3.4ghz modem ===
 * http://www.freewave.com 20 mile range LOS
=== Long range 500km RF modems for UAV ===
 * http://www.tfk-racoms.com/index.php?id=39
 * http://www.mc.com/industries/aero/navigation.aspx
 * http://www.freewave.com/default.aspx
 * http://www.woodanddouglas.co.uk/
 * http://www.uavcomm.com/index.php
 * http://www.uavfocus.com/uav_components/index_html
=== Two-way radios ===
 * http://www.oregoncientific.co.za R600 , 011 805 1966
 * http://www.laradio.co.za/
 * http://www.awesometools.co.za
 * http://www.zartek.co.za Two-way radios
 * http://www.homeguard.co.za RF passive alert.
 * http://www.hobbytron.com/FMTransmitter.html FM transmitters
 * http://www.satcomms.co.za
=== 1.2ghz video modules ===
 * http://www.electronicsinfoline.com ATV 30km range 1.240 - 1.265ghz video transmitter RC238T
=== Zigbee ===
Lemosint.com zigbee modem has AT command interface
 * http://www.lemosint.com/scripts/zigbee_etrx_module.asp Zigbee modules
 * http://www.xbow.com/Products/productdetails.aspx?sid=156 Zigbee
 * http://www.zigbee.org/en/index.asp 2.4ghz datalink
 * http://store.homeseer.com/store/HomeSeer-Z-Troller-Z-Wave-Primary-Controller-PC-Interface-Serial-P214C66.aspx
 * http://www.control4.com/
 * http://en.wikipedia.org/wiki/Z-Wave See ConfiguringAlarmSystem
 * http://www.alertme.com
 * http://www.arrowaltech.co.za/competitions.html Arrow altech TI
* CCD interface for Xbee
* http://thesiliconhorizon.com/store/product_info.php?products_id=44&osCsid=4754282405327ec8cc4c7cea98d08302
 
 
=== 2.4ghz video units ===
From 50mW to 1Watt
=== www.jasco.co.za ===
http://www.jasco.co.za have electronic engineers that can develop radio systems
on any frequency. They did systems on 1Ghz for the mines(illegally) in South-Africa, a frequency used for missile tracking in the northern hemisphere. 1Ghz will give better LOS throughput that 2.4ghz or 1.2ghz and cut down on spectrum pollution in the ISM bands. 
=== GNU radio ===
 * http://comsec.com/wiki?UniversalSoftwareRadioPeripheral
 * http://www.gnu.org/software/gnuradio/
 * http://hpsdr.org/
=== ATV amateur transmitter television and FM radio ===
9km Long range FM transmitters of data also
 * http://business.vsnl.com/rclindia/index.html
 * http://www.electronicsinfoline.com/
 * http://www.electronicsinfoline.com/rcl/product_info.php/products_id/24
{{{
Radio Communication Laboratory.
#2, College Street,
Krishnanagar City,
Nadia, West Bengal - 741 101. INDIA.
Tel: +91-3472-50184 / 54709
Fax: +91-3472-54709
E-mail: bulan@cal2.vsnl.net.in
}}}
 * http://transmitters.tripod.com/links.htm
 * http://www.designnotes.com/CIRCUITS/transmitshortwave.htm
 * http://www.maxstream.net/
 * http://amateur_tv.tripod.com/index.html
 * http://dafh.org/gbppr/mil/fmvid/index.html
 * http://www.megastore.co.nz/Security/AVWireless.html
=== Practical circuits ===
See http://www.homeguard.co.za and http://www.nutsvolts.com June 2001 p.81 Build an RF sensor block by Karl Lunt. He uses the 433mhz serial transmitter chip from http://www.linxtechnologies.com
=== Amateur radio ===
=== temp ===
HAWK model plane
http://www.modelflying.co.uk/features/feature33/index.html
=== links ===
https://bitbanksoftware.blogspot.com/2018/12/optimizing-your-nrf24-range-with-simple.html from Bitbank2 
lidar 
Category:FPV
Category:Wi-fi power amplifiers
Category:Radio modems
Category:Uav antenna tracking
Category:Antennas