log periodic design

Stacked 7-Element-2m-Yagis - These yagis and groups were designed with YO7.23 from K6STI and checked with EZNEC from W7EL. With a gain of 14/17/20dBd they have a good relation between gain and mechanical problems.

A turnstile antenna for 2-meter ARDF - Antenna design for use with hidden transmitters on international-rules ARDF events

802.11b Antenna on the Cheap - Build a 802.11b antenna using PVC, some cheap copper tubing, a Pringles can, and some scrap cardboard, in a few hours. Tests state a 12db gain on 2.4 Ghz

2E0BEJ Ben Sutton Priority listing - Blog discussing my Amateur Radio experiences including APRS, Fox Hunts, Construction, first steps into HF, etc

Otto engineering - Otto engineering is comprised of two divisions otto controls and otto communications. otto controls designs and manufactures a full line of switches and grips used in heavy equipment, aerospace, marine, medical and other demanding applications. otto communications designs and manufactures audio accessories for two-way radios used in public safety, police, fire, retail, hospitality manufacturing and other markets.

SoftRock-40 - The SoftRock-40 is a small, low-cost, good-performing "software defined radio" receiver that plugs into a computer USB port and delivers I-Q audio signals to the computer's sound card. It was designed by Tony Parks, KB9YIG and Bill Tracey, KD5TFD as an "SDR sampler project" for hams everywhere to easily try out software defined radio.

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.

K8ZT's FT 817 resources - Ham radio resources about qrp, dx, logging, contesting, includes lots of links to FT817 resources on the web

Icom 2720h crossband repeat - You can use almost any Icom handheld to contact your 2720H back in your vehicle for crossband repeating.

Ham Gear - Ham Radio T-Shirts, Caps, Mousepads, also vintage designs! Designs include logos from Amperex, Collins, Eico, Eimac, Gonset, Hallicrafters, Hammarlund, Heathkit, Johnson, Knight, Mars, National, Swan, Skywarn and others.

DxLink Priority listing - DxLink, a freeware DX cluster user software. Connect via Telnet or packet. CAT-interface and telnet out to run with your favorite logging software. Now version 1.5

Cabrillo Evaluator by W3KM - Cabrillo Evaluator Software by W3KM free software loads Cabrillo log files, evaluates and scores them.

BBLogger - BBLogger, a freeware windows software to fully manage you Amateur or Short Wave Listener Radio Station written by Giorgio IK2VIW

YG-PSK - Simple PSK31 and RTTY program based on the AE4JY PSK engine. Logging inlcudes 10-10 and VP number. Exports to ADIF and CSV.

DRM Software Radio Project - The DRM Software Radio is based on the proven Fraunhofer DRM engine, which is considered to be the most advanced DRM engine today, built around fully licensed proprietary DRM encoding technology.

Analog Inputs on a KPC-9612 TNC - Modify a KPC-9612 to give a total of four analog input for remote monitoring and telemetry.

Broadband news: EU sets bpl guidelines - The EU has followed the U.S. lead in clarifying rules surrounding BPL (broadband via power-line) technology

Amperion Inc BPL tests - Amperion Inc. issued an announcement that it has successfully tested its broadband powerline (BPL) technology over high-voltage, 69,000-volt transmission lines.

Broadband news : another bpl trial dropped - The company trialing the technology has decided BPL was not "commercially deployable," and has instead decided to focus on wireless mesh networking in the region

Are you ready for BPL - Broadband over power lines (BPL) is a technique for transmission of high speed data (broadband Internet) over powerlines. Access BPL technology injects radio frequency energy into powerlines which were not designed for transmission of radio frequency energy, and leak substantial energy that causes interference to radiocommunications service

BPL Interference - Zip file taht contains a tutorial section that explains several different BPL technologies

Bpl interference blocked in europe - Blog post announcing that Ham Radio, shortwave listeners and broadcast band listeners will be protected by Law in Europe

SDR - Software Defined Radio - Forum - SDR Forum - organization dedicated to promoting the development, deployment and use of software defined radio technologies for advanced wireless systems.

FCC Facilitate SDR technology - FCC adopts rule changes to faciliate deployment of Software Defined Radio technology

ARRLWeb: Software Defined Radio - ARRL page on SDR technology