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

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

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

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

India Delta - An 11 meter dx group international dxers

SD Chile - Sugar Delta Chile official web site

SD Croatia - SD croatia web site

Ham Radio Deluxe DX Spots - Ham Radio Deluxe DX Cluster data is taken from the Amateur Radio DX cluster using DXSpider

Chelan-Douglas RACES Group - The Chelan-Douglas Radio Amateur Civil Emergency Services (RACES) Group provides emergency communications services in times of need to requesting agencies throughout North Central Washington State. Chelan-Douglas RACES is hosted jointly by both Chelan and Douglas County Emergency Management. The group is composed of registered Washington State Emergency Workers who hold an Amateur Class Radio License. All members are volunteers who have other primary jobs, and donate their spare time upon request to support emergency operations.

K8ZT's Ham Radio Resources - K8ZT's Extensive Ham Radio Resources about QRP, Vanity Callsigns, Software, Maps, Kent State, Shack Design, Argonaut, Sommer, Log Analysis

Live online streaming for arizona - Listen to original audio content from Flagstaff, Coconino County and Northern Arizona. Streaming Police scanner by azradiowaves.net

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.

FlexRadio Systems - Software Defined Radios - FlexRadio Systems delivers the first truly open source Software Defined Radio transceiver for Amateur Radio use. Receive Only versions are also available for non Amateur Radio applications. Read the SDR Articles and the SDR-1000 Product Information.

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.

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.

HF Antennas for restricted space - Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.

Modification for FT-1000 MP - Modifications collected 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

HRDLabel - QSL and Label printing addon to Ham Radio Deluxe by IW1QLH

Safety: RF awarness guidelines - Although Amateur Radio is basically a safe activity, in recent years there has been considerable discussion and concern about the possible hazards of electromagnetic radiation (EMR), including both RF energy and power frequency (50-60 Hz) electromagnetic fields. This section summarizes what is now known and offers safety precautions based on the research to date.

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

Amsat-na government filings - Amendment of Part 15 regarding new requirements and measurement guidelines for Access Broadband over Power Line Systems

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.