dual wound

DXanTech.com - HB9CV based dual feed phased array type antennas for HAMs, antenna resource for DX-ers

Dualband-Beam 12/17 m - The beam has only one feedpoint with 50 Ohm and has an open-sleeve element for 12 m by DK7ZB

DX Dual Dipole  ^pop - Two dipoles fed from the same coaxial line by n6bz for 20 and 15 meters

A Practical Antenna for 160 Metres  ^pop - 140 feet of insulated wire, the first half of which (70 feet) is space wound on an insulated tube.

Dipole/Yagi Antenna - DX dual dipoles by nb6z for 20 and 15 meters

A J-Pole for 2-meters and 70-cm  ^pop - An Easy Dual-Band VHF/UHF Antenna from QST September 1994

NB6Zep Antenna and more - A modified EDZep for 20 meters, Yagi, Zepp Beam, Dual Dipole, Space Restricted 80 meter wires. Operating Bands: 40 thru 10 meters with tuner

Fieldcomm association - The FieldComm Association is a small group of individuals in the central Virginia area interested in communications

ViperDew's Amateur Ham Radio - Amateur Ham radio site, something for individuals looking to get into HAM radio or experienced Amateur's.

Shortwave and Scanner Swap Shop - A group for the purpose of buying-selling-trading SW receivers and scanners only. Free and mainly for individuals.

RM Italy  ^{updated  pop} - RM is an Italian company operating in the radio communication field since 1974, main products are: HF-CB-VHF-UHF-Dual Band Amplifier, Power Supply, DC-DC Converters Antennas and more

Hamstick - Lakeview antennas, manufacturer of mobile antennas and accessories by WD4BUM, including colinear antennas, dual band, mounts and accessories. Maker of popular HamStick antennas.

The Ventenna - Rugged, disguised 2m, 220MHz, 440MHz, and 2m/440 dual band antennas, HF portable antennas, portable dipoles.

PC-Controlled 2m Receiver - This VHF receiver(118-173MHz) is fully controlled by PC(LPT port).Receiver presents a complete dual conversion.

ATNF - Australia Telescope National Facility - Operates the Australia Telescope, a set of radio telescopes in New South Wales. These telescopes are used, individually or together, to study objects in the Universe ranging from the remains of dead stars to entire galaxies.

How to wind a choke - How to build and properly wound an efficient RF choke to protect antenna controller in mobile setups

Radio Shack PRO-94 at eHam - Eham user reviews for Radio Shack PRO-94 1000 channel Dual Trunking Scanner

Surplus Sales of Nebraska - 3000 page mega website for Radio Amateurs, builders, radio broadcasters, manufacturers and individuals around the world. We cover any RF part you can think of from vacuum capacitors to rf connectors to transmitting doorknob caps to roller inductors.

Bandercom - Radio sales to over 60 countries, source for all communication equipment, individual hobbyists, professionals and dealers.

ProsKan KA1LPA - Dual screen, supports AVT modes,16 Milions col, auto call insert facilities.

Spectrogram  ^pop - Shareware dual channel audio spectrum analyzer for Windows 2000/XP which can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time for any sound source connected to your sound card. Can be used for MTHELL, QRSS and DFCW by R S Horne

Zelscope  ^pop - Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.

How to obtain a dual voltage without a transformer - How to obtain a dual voltage without a transformer

2m Band VHF antenna pre-amplifier - Homebrew pre-amp for 144-146 MHz amateur band and OSCAR Satellites, using BF981 Dual-gate MosFet. Gain ~15 dB, NF=1dB.

23cm dual stage preamp - A modification / combination of the DJ9 BV & I5TDJ 144 MHz preamp designs