icom hm 36

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An antenna for 7MHz local contacts - This article describes the design of an antenna for local contacts on 7MHz, including a simple and efficient matching system that presents a 50 ohm load to the transceiver.

A Simple 7 element Yagi calculator  ^{updated  pop} - A JavaScript to calculate the dimensions for a seven element Yagi-Uda Antenna

WB6ZQZ Triple Ratio Balun - This balun matches resonant antennas from 9 to 75 ohms without a tuner and provides RF isolation to keep the current off the transceiver case

Random wire Unun - Get all band coverage with a single wire and the icom 703

Simple HF Baluns for 50/75 ohm coax - Show diagrams, winding methods and tables of some 1:1 and 4:1 baluns for 1.8 - 30 MHz suitable for use up to 200W (400W peak) on systems using 50 or 75 ohm coaxial cable input where SWR should not exceed 1.6:1.

Antenna Tuning Unit - This homebrewed antenna tuning unit also incorporates a 50-ohm QRP dummy load, power meter (1 or 10 Watts full scale), and SWR meter

10 m Aerial Matching Unit - This simple matching unit will allow a 10 meters aerial to be used right across the 10m band without the need to physically adjust the elements, and offers a virtual 1:1 VSWR at 50 ohms impedance to the transmitter.

KC9GNK - 10 meter Beacon 28.2836 MHz from near Wisconsin Dells, Wisconsin

The CQ iDX Award - The CQ iDX Award encourages the development of a DXing mindset by recognizing the accomplishments of those amateurs who make confirmed contacts with between 25 and 100 different DX countries

ICOM America D-STAR Forums - Discuss application projects you are doing with your D-STAR equipment

Configuring an Icom ID-1 DSTAR radio - Icom dstar digital data configuration for simplex

D-Star Query - DStarQuery was written to provide a universal query mechanism for Icom D-STAR enabled radios with a low speed port.

Icom ID-1 and D-STAR features - 1200MHz Digital Transceiver features and d-star informations from the Icom website

Icom D-STAR presentation - Products and information about the D-STAR technology in pdf file

D-Star UK: for the second century of Amateur Radio - D-Start site sponsored by Icom Uk

ARRL Experimenting with Icom D-Star Digital System - ARRL has embarked on a project to learn firsthand what D-Star digital technology has to offer and to assess its capabilities in a real-world Amateur Radio environment.

Long Wave Radio - The World of LF, by G3YXM reference site for longwave operations. Introduction to operating on 136 and 501 Khz

Build a 136 kHx TX - Two versions of a 350 and 900 W output TX for longwave by G3YXM

Mobile on 136kHz - G3YXM mobile operations on 136 Khz !

Kenwood TH-F7E vs Icom IC-E90 - Comparing the TH-F7E with the Icom IC-E90

D-PRS Interface - D-PRS Interface is written to provide a universal interface between APRS clients and an Icom D-STAR enabled radio with a low speed port.

NU-Tech - NU-Tech is a powerful DSP platform to validate and real-time debug complex algorithms, simply relying on a common PC. Thanks to an easy plug-in architecture, the developer can write his own NUTSs (NU-Tech Satellites) in C++ and immediately plug them into the graphical interface design environment.

Ohm's Law for Dummy Loads - If you need a dummy load and don't want to spend money for it, you should read this article

Noise Figure Meter with a Spectrum Analyser - A relatively simple automatic Noise Figure (NF) meter was developed which is using a spectrum analyser as the receiver and logarithmic power detector.