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An Hentenna plan for six meters band

A collection of extra Icons for the superb MixW programme.

Home made RF power amplifier for six meter band

Information on licensing abroad for radio amatuers by OH2MCN, Veikko Komppa

High gain, good pattern and acceptable bandwidth. These aims can be realized with a radiation-resistance of 25-35Ohms, because the 28-Ohm-feedpoint is very simple to match.

Presents the amateur radio activities and interests of Kote, operating as 4L4KW. The page features a collection of external links relevant to the ham radio community, including references to other callsigns such as 4L1BR, 4L1W, 4L4MM, and 4L/ZL1RS, indicating potential connections or shared interests within the Georgian amateur radio scene. It also lists several well-known ham radio resources like QRZ.com, DXzone.com, and Contesting.com, suggesting an active engagement with DXing and contesting. The resource includes links to major amateur radio equipment manufacturers such as Icom, Yaesu, and Kenwood, which implies an interest in modern transceivers and station setup. The mention of DX-Summit and "fixed activity on Ham bands" further reinforces a focus on making contacts and participating in on-air operations. The page serves as a digital hub for 4L4KW's ham radio presence.

Collection of Yaesu FT-100 comments

A figure-8 double loop antenna

This antenna was described by Bill, G4KIH in Sprat 52 and is actually a G5RV modified to fit into a small space.

BaseStation is a Windows application written originally for the SBS-1 family of Virtual Radar Receivers.

Construction Details for 50MHz-Yagis in DK7ZB-Design

glfer is a program for reception and transmission of QRSS/DFCW signals. It is composed of two main parts: the spectrogram window, where you can see the spectrum of the received signal vs. time the transmission functions, to emit cw characters at a slow but precisely controlled speed, using the QRSS (slow CW) or DFCW (Dual Frequency CW) modes

Antenna tests on Alford 1.2 Ghz for ATV oprations in italian

A place where amateur's can swap and sell item's. of a non commercial nature. Most of the listings are from the Rhode Island Area. Bulletins and VE sessions, and Club meetings are also posted.

eHam users review of the Cushcraft R7 multiband vertical antenna

How to homebrew a ENVIS antenna for 80 and 40 meters band

Beethoven Fifth in Morse Code

Review by G3TXQ and comparison to its modificated versions. SWR Measurements on inverted V setup and comparison from EZNEC model and a real one.

This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors

Qsl Information databse updated the 1st of the month. Over 130,000 managers and direct addresses

The Nato and Western Union Phonetic Alphabets useful for spelling words and names over the phone.

Yaesu FT-100 radio control software for linux

Kevin KD5WX maintains this site daily and are called by the NHC to activate the net, concurrent with the HF watch nets. Activated during Hurricane season only.

The Grit Net website

Info about Yaesu VX-8R by APRS Wiki

Some beginners guide to monitoring aircraft communications

A 4 element delta quad antenna for 15 meters in french

Amateur Radio (G3TXQ) - Malta 40 QRP CW Transceiver

A simple & effective antenna pre-amp for 10m. Band (28-29.7 MHz)

This program lets you cross connect Telnet connections and ComPorts or Ethernet. It can be used as a backup connection for PacketCluster nodes or to connect a CT network to a remote PacketCluster.

SARA is a dedicated group of people that formed an international society to learn, trade technical information and do their own observations of the radio sky

Topic regarding a new 1KW HF power amplifier with 2x GI7B

Based on original G2BCX design this J-Pole antenna for the six meter band is made with a homemade ribbon cable. The antenna shown in this article includes a coaxial cable choke feed to remove RF currents from flowing on the outer of the cable.

Power supplies, rf power amplifiers, dummy loads, frequency counters, repeaters antennas manufacturer based in Italy

Increase TS 480 PEP power level

Schematic of a regulated 0-24v 2A Power Supply

Serving Tarrant, Parker, Wise counties, and city of Fort Worth, Azle, Springtown, Boyd, Weatherford, Saginaw

An Eprom Eraser with UV-Ray for 27Cxx Eprom (and similar, common in TNC) with a timer

Will we ever be able to dispel the myths? Steve Katz, WB2WIK/6

Huge amount of relevant information you should know before building a tower

Windows open source packet radio decoder. Decodes AFSK1200, AFSK2400, HAPN4800, and FSK9600 packet data with a radio connected to your pc sound device.

A long wire balun by ON6MU

NetLogger displays 6 currently active nets, including the 3838 Breakfast Club on 80 meters SSB and the CornCobNet on 40 meters SSB, providing real-time updates every 20 seconds to monitoring participants. It functions as a specialized logging program designed for amateur radio nets, facilitating the transmission of check-in data via the internet. The system lists net name, frequency, band, mode, server, start time (UTC), elapsed time, number of subscribers, and the callsign of the operator who opened the net. The platform details specific net operations, such as the Florida AM Group on 3.885 MHz AM and the GRAVEYARD NET on 3.967 MHz SSB, illustrating its application across various **HF** bands and modes. NetLogger's utility extends to viewing past nets and offers a **Groups.io** integration for community interaction. It provides a practical solution for organizing and participating in amateur radio nets, offering a centralized system for tracking participants and net activity. The resource details specific net operations, such as the Florida AM Group on 3.885 MHz AM and the GRAVEYARD NET on 3.967 MHz SSB, illustrating its application across various HF bands and modes.

This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.

This program has been designed for packet communication with ISS (International Space Station), PCSat or 'compatible' satellites with ease... Ideal for any UI packet communication.

Demonstrates the construction and measurement of a single-turn HF receiving loop antenna, built from common materials like electrical conduit and lamp cord. The resource details the physical dimensions, including a 4-meter circumference, and calculates the theoretical inductance at approximately _6.4 uH_. It outlines a method for determining resonant frequencies across the 4-17 MHz range using a _C Jig_ and a _VR-500 receiver_, coupling the loop with a ferrite ring. The article also discusses the impact of receiver coupling on the loop's Q factor, noting a degradation in sharpness due to the transformer's reflected impedance. Analyzes the observed resonant frequency patterns, highlighting an unexpected rise in the loop's effective inductance at higher frequencies, particularly above 13 MHz. While some increase is attributed to distributed capacitance, the rate of rise suggests further investigation. The experimental setup provides practical insights into the challenges of maintaining high Q in simple receiving loops and offers a comparative reference for other homebrew antenna projects, such as those by _VK2TPM_.

Western Australia frequencies

Official Icom comparison chart for IC 756 PRO III, IC-7600, IC-7700 and IC-7800

A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.

Grig is a simple Ham Radio control (CAT) program based on the Ham Radio Control Libraries (Hamlib). It is intended to be highly generic presenting the user to the same graphical user interface regardless of which radio is being controlled.