roof top tower

TX Four Square Antenna - A 220-ft tower that has five catenary lines, each about 500 feet long. Four of these lines, running NE, SE, SW, and NW support four 1/4-wavelength wire verticals used in a 160-meter four-square antenna.

80m mobile antenna - The antenna is made in four sections which consists of a base matching coil, a helical section, a centre loading coil and the top whip section with its capacity hat by G4DCH

Antenna Efficiency - K0BG article con antenna efficiency covering topics like radiation resistance, coil losses and ground losses, other kind of losses. How calculate efficiency and Bandwidth Notes

20 Foot Portable PVC Tower - This tower is easy and inexpensive to build and easy to disassemble for transport.

Antenna tower setups gallery - Interesting photo gallery of antenna installations, tower setups and cabling techniques by IK7SDZ

Portable Tower by VK3EK - This is a portable tower that one person can erect very easily and safely

20 Foot Tower Construction  ^updated - Construction of a 4 legged 20 foot Tower at vk5sw

VE3XD Tower Setup - Trylon 56' T300 tower installed with a Cushcraft X7 tri-band antenna

Cobra Ultralite Antenna - A multi-band wire-dipole using multi-conductor cable on each leg.

The Simplex Amateur Radio Club - A group of local hams who operate nightly on simplex and discuss all sorts of topics

Booster 144 Mhz amps - Professional ham radio VHF amplifiers made in indonesia

AC0C Roofing Filters - Yaesu FT-2000 roofing filters

S-COM LLC - Manufacturer of Amateur and Commercial Repeater Controllers, Autopatches, and Accessories.

Tilt Plate NN4ZZ - The TiltPlate is an antenna tilting mechanism that works with a tilt over tower and yagi to bring the antenna all the way down to ground level.

Aluma Towers - Telescopic antenna towers, fixed antenna towers, stacked and sigle section antenna towers, trailer towers, cargo trailers accessories

Mecca Industry Co. Towers - Crank-up(telescopic) and tilt-over tower, Ring rotator for mounting an extra antenna, from 16m to 42m, Strong safe and smooth, Radio communication and commercial tower.

APRS Topics - APRS related links and resources by KA9VNV

Yaesu FT-2000 website - FT-2000.com is the one stop shop for exchanging critical operational settings like Mic EQ / Processor / AGC settings etc.

Bonito RadioCom Onlineshop - Whether Hamradio software, Transceiver or Receiver, WiFi sticks as well as practical accessories. Bonito have everything around the topic Hamradio.

UStream Producer - Broadcast your audio and video or even desktop via ustream.tv using Ustream Producer free version

IDSP - IDSP is an app for IPHONE and IPOD Touch. Made by 2 powerful filters, a band pass and a band stop with adjustable bandwidth. Filters are butterworth 4 and 8 poles, sample rate at 44,100 32 bit. Cancel every noise and hear only your qso.

DBF to ADIF - Free Logbook conversion program that allows the conversion of some old DBF log files (DXLog, EasyLog, LogPlus, TopLog, TurboLog TotalHAM92) to the ADIF Format, 3.8Mb ZipFile

Homemade Antenna Rotator Controller - The Antenna Rotator Controller is unique in that it senses, displays, and controls to the earth’s true magnetic field. The compass sensor, mounted in a waterproof enclosure, is attached to the mast and sends its signal to a microcontroller. By kg4jjh

DRM Demo Receiver - Christoph Petermann DF9CY DRM demonstration receiver project including Circuit Diagram and component list

USB Warbler - This project describes how one USB port can provide all of the signals necessary to operate a transceiver in digital mode from a Windows XP laptop by KG4JJH