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The Chattooga - Walker amateur radio club

CB radio club in El Progreso, Yoro, Honduras.

Amateur radio operators seeking local community and emergency communications involvement often look for active clubs. The Rock River Radio Club (RRRC) provides a platform for hams in Wisconsin to participate in weekly nets and monthly meetings, fostering camaraderie and operational readiness. Their activities include regular ARES/RACES nets, which are crucial for maintaining proficiency in emergency communication protocols and equipment. The club hosts weekly nets on both VHF/UHF and HF bands, allowing members to practice various modes and frequencies. These include a Monday evening net on the Juneau Repeater at _146.64 MHz_ (PL 123.0) and a Thursday evening net on the Knowles Repeater at _442.975 MHz_ (PL 123.0). An HF net operates on Saturdays at **3.947 MHz**, with an additional ARES/RACES net on Sundays at **3.967 MHz**. Monthly club meetings are held on the first Tuesday of each month at 7 PM in Randolph, Wisconsin, providing a consistent gathering point for members and prospective hams. The club also engages in public demonstrations, such as those at the Experimental Aircraft Association (EAA) Dodge County Chapter Fly-In, showcasing amateur radio to a broader audience.

Comment on W5DXP 2011 coil measurement experiment

The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM.

Autonetics radio club - k6nx - boeing, anaheim

Countries worked on 6 meters, ZF firsts on 50 Mhz, and links to resources.

An home made CW beacon transmitter project running 1.5 W on the 80 meters band

A considerably shortened Magnetic Loop antenna with performance of a single conductor text book magnetic loop.

The loma pioneer repeater club - lprc provides 2 meter vhf and 440 uhf amateur radio and emergency communication for the san francisco and monterey bay areas from a repeater on mt loma prieta. aprs digipeater available.

Dxpedition information site has dates, frequencies, operators etc. Planning a searchable data base for logs.

Configuring the TM-D710 with Garmin Nuvi 350 for APRS setup

K8qik amateur radio club

QSL information for AX1AA VK1AA/M VK1AA/2 VK1AA/4 VK9LX VK9LX/MM VK9LX/9 H44XX H40XX

2-Element-12,5-Ohm-Yagi with 0,40m-Boom complete description of all details for building this Yagi and stacking to an array

Yaesu ATAS 120 Autotune Antenna Repair

WA1ION article on beverage and ewe antennas

How to reduce and eliminate the RF interference at VHF caused by the wired network

How to build Fan-Dipoles by DK7ZB. Experiences with various band combinations. Not all combinations are working properly. If the frequencies are to close together the impedances will lead to a very bad SWR. This happens with the bands 10-12-15m or 15-17-20m.

The ZR6YY Antenna for 6m by Maurius ZR6YY revisited by YT1VP

The construction principles for open-sleeve elements in antennas

Original article was in December, 1986 QST

A synthesized 2.3 GHz Amateur Television (ATV) transmitter design, conceived by Ian G6TVJ, is presented, targeting broadcast-quality video performance on the 13cm band and extending up to 2.6 GHz. The core of the design utilizes a commercial Z-comm Voltage Controlled Oscillator (VCO) that tunes from 2.2-2.7 GHz, providing a +10 dBm output and simplifying RF alignment. This VCO's stability, originally intended for narrowband applications, readily accepts high-frequency video modulation, contributing to the transmitter's robust performance. The exciter stage, incorporating a Mini Circuits VNA 25 MMIC amplifier, boosts the signal to +16dBm, while a Plessey SP4982 prescaler divides the output frequency for the synthesizer. The synthesizer employs a Motorola MC145151 CMOS parallel IC, favored over the common Plessey SP5060 for its superior video modulation characteristics and ease of programming without microprocessors. This choice addresses issues like LF tilt and distorted field syncs often seen with SP5060 designs, particularly when operating through repeaters or over long distances. The MC145151 divides the signal further, enabling precise frequency stepping, with programming handled by EPROMs for channel selection and LED display. The loop filter network, critical for video integrity, was developed through experimentation to prevent the PLL from reacting to video modulation, ensuring a clean transmitted picture. The transmitter incorporates a Down East Microwave commercial power amplifier module, delivering approximately 1.6W output, driven by the exciter through a 3dB attenuator. Construction involves surface-mount SHF components on micro-strip lines etched onto double-sided fiberglass board, housed within a tinplate box. The design boasts no AC coupling in the video path, preserving low-frequency response, a common failing in other ATV transmitters. Performance tests with a 50Hz square wave revealed no LF distortion, and a calibrated "Pulse & Bar" signal showed a near 100% HF response, demonstrating its capability for high-quality ATV transmissions.

This circuit is very simple and has a fantastic range of potential uses.

Lewis County, New York

Aqui encontraras todo lo relacionado con la radioaficion de Puerto Rico

5 Elements 12,5 Ohm Yagi with a 6m Boom

K9EID 75W power amplifier for the six meters

IK2PII describe here a simple direct conversion receiver, thinked for QRSS and DFCW communications, as companion of ARGO or SPECTRAN programs.

Comprehensive list of links related to Amateur Radio, Electronics, and other fn stuff.

Ivo presents a list of LZ Awards and Bulgarian Lighthouses

Dx-pedition in Lebanon on July 2004 by I1HJT - I1NVU - IK1QBT - OD5LN pictures and Log on-line it's available on web site. Qsl via I1HJT

San diego county amateur radio council, sandarc. serving the san diego amateur radio community.

L50W-Special callsign for the 50?anniversary of LU1WP-Radio Club Trelew

Radio Society of Sri Lanka

The Belarussian Federation of Radioamateurs and Radiosportsmen (BFRR), the member society of International Amateur Radio Union (IARU). HQ is based in Minsk city, Belarus

Weak Signal Propagation Reporter Network Map and Database of WSPR data

This RF probe circuit allows RF to be measured in the presence of DC

Activities, legal infos, technical articles, photos, vendors, software, and links

F2CW-ZL3CW African DXpedition Log Search Page

Fall River Amateur Radio Club

Corona & Norco in Southern California

Design for a quarter wave vertical antenna, for the top band in use at V31YN

D.I.C. Diploma Isole Campane from Italy

This is a computer program for Amateur Radio transmission and reception using a computer and radio transceiver The program equips your computer with a one sentence at a time chat-mode for operation on the HF bands. You use it in the same way as you would Skype or cell-phone TXTing. This facilitates rapid-fire QSOs and especially makes nets easier by ZL2AFP

This calculator estimates the efficiency of a T match tuner using a simple loss model.

The official home page of the Greenland EME DXpedition 29 May - 5 June 2000

Personal page with photos and info on used equipment