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Baluns - by ON9CVD - The simple 1 : 1 balun is being know in a variety of constructions. A dedicated chapter seems appropriate

2 Meter Vertical Mobile Antenna - Mobile vertical antenna for 144 MHz suitable for satellite signals reception by K5OE

Homemade Arrow Antenna - EA4CYQ portable VHF UHF Yagi antenna designed for satellite operations.

GAP Titan DX Repair - K6DQ GAP titan dx antenna repair

Eggbeater II Omni LEO Antennas - Presented here is a high-performance, circularly polarized omni-directional antenna that is easy to build, easy to tune, inexpensive, and will work all the mode J Low Earth Orbit (LEO) satellites

Homebrew Arrow Satellite Antenna - The Arrow Antenna is a design classic: it combines light weight, compact design and functionality in a single package for operating FM dual band satellites such as AO-27, UO-14, SO-41 and SO-50

The IOio Antenna - The IOio antenna and the satellites, a custom portable antenna done with squares both UHF and VHF by EA4CYQ

Lindenblad Satellite Antenna by KL7UW - Omni-directional circular polarized satellite antenna project by KL7UW

Easy Eggbeater Antenna - Easy Eggbeater Antenna for amateur radio to work with Satellite VHF & UHF

SWR with non-resonant antennas - SWR with multiband and non-resonant antennas

Long Range Wi-fi Dish Antenna - Build parabolic WLAN antenna adapted from a small satellite dish. It provides high gain and long range connections.

Ham2Ham - Community platform for ham radio amateurs. With ham2ham.com you can communicate with radio operators in all over the world via internet to support the amateur radio communication via HF, VHF, UHF, satellites and more.

VE3VRW Macintosh Satellite Gateway - Listen to the Gateway Live on the internet Amateur Radio Operators in Southern Ontario and Western New York have been using the VE3VRW Satellite Gateway via the Toronto Area SSPBD Repeater System to make contacts on AO-27, UO-14, SO-67, Sunsat, SO-41, SO-50, Echo, Mir and ISS since it was first installed in 1997. MacDoppler tracks the FM UHF/VHF Amateur Radio satellites 24 hours a day, 7 days a week.

Gulf Alpha Communication Antennas - VHF, UHF and Satellite Antennas for Government, Commercial and Amateur Radio Made in Nebraska USA

RFTec - Coax Cables and Connectors, DC to 40 GHz RF cables & test cable assemblies, surge protectors, SMA connectors, adapters and termintators

MegaPhase - MegaPhase designs, manufactures and sells coaxial cable assemblies to OEMs building advanced microwave and optical electronic systems, products include test cables, test adapters, flexible and semi-rigid cables used to connect system components inside a system, and coaxial connectors.

Cmpter Electronics - Cmpter Electronics is specialized in designs and manufactures RF Coaxial Connectors, RF Adapters, Cable Assembly and GPS Antennas for applications in the datacom/telecom, automotive, instrumentation aerospace and defense markets.

Chronology of Amateur Satellites - History of all OSCAR satellites from 1961 till today in chronological order.

Space frequency listing - Downlink frequencies for all kind of satellites

Jtrack - Amateur Radio Satellite Tracking - Nasa on-line live satellite tracking, let you track ham radio satellites, requires Java

EOO - Earth Orbit Objects is free program which predict satellite passes for your local or any selected area. Use flat Earth view to display satellite tracks with visibility circle. The globe view shows selected satellites around the Earth as a sphere and sky view shows satellites as you would see them in a starry night.

Satellites for Windows Phone 7 - Windows Phone 7 Satellite Tracking and Prediction

Passive CW headphone filter  ^updated - This filter is a plug in adapter that has no batteries but gives very good performance by G8MNY

A PIC16F84 based CW Decoder - CW decoder project that automatically adapts itself to the CW rate and may be employed for learning purpose substituting the traditional tone generator and offering the capability of displaying the keyed code.

The Pixie and Micro-80 - QRP HF Transceivers, Tiny, direct conversion CW transceivers using just a handful of readily available parts.