dual band antennas

Vertical antenna for 40 and 80m - Homebrew a vertical antenna for 40 and 80 meters band based on popular HF2V model by DL7JV

G8VR a small Yagi for 50 MHz - Complete plans and drawings to build a Yagi for six meter band by Ken Willis, G8VR

The Copper cactus antenna  ^pop - Copper Cactus multiband J-Pole antenna

T-Hunting Antennas  ^pop - 4 Element Cubical Quad, Yagis, LZA Circular Quad, Shrunken Quad , quarter wave, J-Pole, beam mounting , changing polarity

DF9CY - ZX15/4 extended 10/4 - A 4 element addition for 10m to an existing 4 element yagi (ZX antennas)

Austria - OEVSV - Oesterreichischer Versuchssenderverband

SV8CS Spiros - Dx on Hf specially on low bands from Zante island Greece

PSK31 Web Receiver - These web receiver based in Kiew Ukraine show PSK31 activity on 20m band 14.070-14.074 MHz remotely by using a web browser. Requires java by the MixW team

Array Solutions - WX0B - Stacking and phasing HF and 6m arrays antenna switches and contesting devices. Custom low band antenna arrays, bandpass filters,commercial/Mil STd filters,microwave components, commercial broadcast filters.

ACOM  ^pop - ACOM international, manufacturer of HF power amplifiers, HF Antennas, Antenna tuners, Switches and Crankup masts

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

EUR-AM - EUR-AM, cellular amateur and commercial antennas

Antennas & More  ^pop - Radio Amateur Antennas, Solar power, Antennas West products, Ham Radio gear, G5RV, Windom, Baluns, Wire, and Coax

KMA Antennas - KMA Antennas specializes in HF - VHF - UHF Log Periodic Antennas, unique antennas for the Six Meter band and custom antenna designs.

Tennadyne - Log-Periodic Antennas

Barker & Williamson - Dipole antennas, unique broadband antennas, trap dipole antennas, coils, accessories for HF radio

Delta X-Ray Antennas - Antenna Manufacturer HF Delta Loops and VHF/UHF Ground Planes

Q-PAR Microwave Antennas - The company (founded in 1973) excels in the research, design, development and manufacture of microwave antenna systems & components. Our range includes horn, reflector, sinuous, spiral, LPDA, helical antennas, etc; antenna positioners, and many bespoke components.

Unadilla Antennas - The Big Signal, W2AU, W2DU, W2VS, traps InLine, Intenna, An-sulator, End-sulator, Old Reliable by Unadilla Antenna Manufacturing Co.

Vectronics - Antennas, Filters, accessories, wattmeters, tuners and amplifiers.

Amsat - ON - Amsat-on...Home of the k-band transponder

ASTRO RADIO - Suppliers of Amateur Radio equipment, Antennas, accesories MFJ, Ameritron, Mirage, hardware and software for digital modes.

FT736 - Tuning control of the Yaesu FT-736R multiband VHF/UHF transceiver.

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

TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.