diamond 220 discone

Discone for HF bands - 80 feet tall Discone was built by Collins Radio Company in the early 1960s

An 80-160 magnetic loop antenna - A classic diamond shape loop antenna that works fine on 80 and 160 meters band. This loop design allow a few watts power only and include part list and construction details.

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.

VHF J Pole for 146 Mhz - KF4SCI project for a VHF UHF jpole, working on 220 and 440 Mhz

30 Meter Loop by N9MW - This antenna is an easy one day construction project. It was made out of common number 12 stranded electrical wire. Read more about SWR reports and home brewing details.

Trap dipole for WARC bands - Diamond W8010 Multiband Dipole Modifications

Feeding an End-Fed Antenna  ^pop - End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.

Discone antennas - An article about discone antennas, installations and setup reports in french

A UHF Discone Antenna for scanners - Article on discone antennas by William K2MQJ and Rudolf KA2CWL

ZS6BKW in Inverted-V format - ZS6BKW antenna design in inverted-v format antenna design at QRZ forums

TF4M Diamond Farm - TF4M Diamond Farm in the West Fjords of Iceland. TFxY, TFxX and TFxZ are presently reserved for Contest operations and special occasions

220 MHZ Spectrum Management Assn - Amateur radio spectrum management and frequency coordination entity for 219

AF6P - FILAMARS of San Diego - Web page of the filipino american amateur radio society of san diego af6p. it's repeater in 2 meters and 220 mhz cover a wide range and can be accessed anywhere in san diego area.

Catalina Amateur Repeater Association - Covering most of So. Cal. from 26 miles off the coast! 2m, 220, & 900.

The Mountain Repeater Association - Formed about 30 years ago, in an effort to promote the growth of 220 MHz operation, further the readiness of the Amateur Radio Community to provide disaster emergency communications, and to promote experimentation with VHF communications.

Yuba Sutter Colusa Tri-County Online Public Safety Scanner - The Yuba-Sutter area's only known online public safety scanner, supporting agencies in Yuba, Sutter and Colusa Counties. Alpha-numeric support for frequency identification with the use of Winamp or iTunes media players.

Low Frequency Transmission Modes - Article by W1TAG on operating modes used on low-banding. The 2200 meter band (135.7 - 137.8 kHz) is only 2.1 kHz wide, so voice work on SSB or AM is out. Find out the best modes on LF

PD5DP Ham Radio Manuals - Another collection of manuals to download offered by PD5DP. Includes ham radio manuals for Icom, Kenwood, Yaesu, Diamond and AOR products

Improving The Heathkit SB-200 - A QST article, hints and kinks on improving the SB-200 amplifier

Heathkit SB-220 - The Heathkit SB-220, two 3-500Z, amplifier made a notable impact in the world of amateur radio when it debuted in 1975. Resources and modifications

2 kW HF Amplifier Rebuild - Heathkit SB-220 amplifier repaired at W8UM

SB 220 modification - IV3GFN modification and restore of an HeathkitSB220

Memphis Amateur Electronics - Carry hundreds of ham radio products including amateur radios from Alinco, Icom, Kenwood, and Yaesu, plus ham radio products from MFJ, LDG, Diamond Antennas, Hustler, Ameritron, Astron power supplies, and books of all kinds

Avantiradio - Polish amateur radio dealer for Yaesu Icom Motorola Diamond MFJ Daiwa Lafayette

Power Gride Tubes - Article on tubes and their usage in power amplifiers design. Explain failures of tube in RF power amplifiers, a common problem in the SB-220 SB-221, TL-922 and other amplifiers.