multi mode

A multi-band super mini loop antenna - To build this antenna you need a lot that is at least 100 feet across. Antenna covers all bands 80-10 meters + 30, 17, 12 meter WARC Bands

Antenna Modelling - Antenna modelling notes, including wich antenna modelling software choose and where to find useful resources for antenna planning and home-brewing.

Home Brew VHF UHF dual band antenna  ^pop - Contructing precedure and tune up of a dual band mobile antenna. This antenna is just a 1/4 wavelength resonator for both UHF and VHF band. It provides no GAIN as compared to other multi-section design.

80 Meter Multiband doublet antenna - 80 meter multiband doublet antenna with open wire feedline for 80-10 meters by N1LO

PAC-12 Antenna - mobile multiband  ^pop - Here’s an award-winning, easy-to-homebrew, multi-band portable vertical antenna designed by long-time antenna aficionado James Bennett, KA5DVS. He’s documented the design and construction plans for a portable antenna that can be built with relatively ordinary components

M1IOS - Wonder Whip antenna and tuner Priority listing - M1IOS Wonder Whip antenna - The M1IOS Wonder Whip A 10 dollars QRP Portable Multiband Antenna for HF, VHF and UHF A variation on the Miracle Whip and Wander Wand. This antenna tuning unit will get your SWR really low on telescopic whips, mobile 3/8th antenna and long wires. A remarkable little tuner that really works!

Antenna Modeling Files - A collections of antenna models submitted to arrl and can be used with NEC-4 or Yagi Optimizer modeling programs

IK-STIC 2 vertical multiband antenna - The IK-STIC 2 is a vertical, all band, antenna that is over 25 feet tall yet weighs under 5 pounds. Based on a telescopic pipe or a fiberglass fishing pole, using a tuner it can easily cover the amateur radio HF bands from 40 - 10 Meters

Tri State Radio Club - Tri state radio clubs web site serving the modern interest in 11 meter CB radio activity

DF6NA : VHF Audio Examples - Sporadic E, meteor scatter, 70cm 23cm and 10Ghz audio recordings in various modes

SWL Audio Clips - mp3 files to download produced by an italian SWL. Includes, broadcast stations, air traffic controls, pirate radios

Cobra UltraLite Antennas by K1JEK - The alternative multi-band solution, covers more bands than a G5RV, light weight, won’t damage your trees.

Iambic mode A and B - Document explaning the differences between Iambic mode A and B

WA4DSY 56KB RF Modem - This is a prototype of the WA4DSY 56KB RF modem. It is intended for use on amateur packet radio networks. The modem generates RF in the 28 to 30 mhz range and requires and linear transverter to convert the signal to a UHF or microwave ham band

Direction finding, HVDFA - The HVDFA is dedicated to fostering skills in the area of Radio Direction Finding as an interesting facet of Amateur Radio, both as a sport and for public service, in the multi-state region surrounding the Hudson River Valley of New York.

Amsat DSP Satellite Transceiver Project - The DSP Satellite Transceiver is a conceptual transceiver designed as a dedicated unit for amateur satellite operators. The initial concept was brought about by the lack of satellite functionality on modern amateur radio transceivers, and the specialized requirements of the ham radio operator who utilizes OSCAR amateur satellites.

ICOM IC-706 Modifications - IC 706 modifications collected by mods.dk

Kenwood TS-2000 review by N0UQZ - JIM, N0UQZ TS-2000 review

Modification for FT-1000 MP - Modifications collected by mods.dk

Yaesu VX-150 Mods - modifications collected about Yaesu VX-150 by mods.dk

Yaesu VX5-R mods - Mods and articles collected by mods.dk

IC-2100H Mods - Modifications for Icom IC-2100H by mods.dk

Mods for Icom IC-2720H - Mods.dk - modification for IC 2720H

FhG Software Radio - The Fraunhofer Software Radio is a first-class DRM reception system which provides audio and multimedia data content

Wavefront CompactPCI (CPCI) RF converter - The Wavefront CompactPCI (CPCI) RF converter provides a complete half-duplex radio front-end in an industry-standard 6U format. The architecture consists of dedicated receive and transmit channels that share a common RF interface.