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Basics, Coax, The PLS259, Soldering and preparing the coax, Crimp on Connectors

Listen to live radio scanner feed of Dallas Police 1 Central - 2 North East

Stocks some NOS Heathkit parts

This resource is currently inaccessible, displaying a "Your request has been blocked" message, which prevents any analysis of its content or technical substance. The original title, "IK7IMP Blog," suggests it was a personal blog focused on amateur radio activities. Without access to the content, it is impossible to determine specific results, comparisons, or practical applications that might have been discussed by IK7IMP. The blocking prevents any assessment of the author's experience or real-world comparisons within the amateur radio field.

In italian language, ham radio tales

WebLog for Amateur Radio, Computers, Technology, not my personal life because...who really cares about my personal life? by Justin Kates Lewes, Delaware, United States

LA8W LN8W, Norwegian Contest Club

Taken from April 1935 issue of QST page 60 where there is a short article on the origin of 73

A very popular method of making a short dipoles resonate at a given frequency. This type of antenna is suitable for single band, narrow bandwidth use.

The CQ World Wide DX Contest records page details the highest scores achieved in the CQ WW DX Contest across various categories and years. It systematically lists records for both SSB and CW modes, segmenting results by entry class such as Multi-Multi, Multi-Two, Multi-Single High, Multi-Single Low, Single Operator High Power, Single Operator Low Power, Single Operator QRP, Single Operator Assisted High, Single Operator Assisted Low, and Single Operator Assisted QRP. Each record entry specifies the callsign, the operator's callsign in parentheses if different, the year of operation, and the total score achieved. The data is further broken down by individual amateur radio bands, including 160m, 80m, 40m, 20m, 15m, and 10m, allowing for granular analysis of performance within specific frequency segments. The page also includes records for the "ALL" band category, representing cumulative scores across all operational bands. The presented records span from 1948 to 2025, providing a historical perspective on contest performance. This resource also references other CQ contests like CQ WPX, CQ WW RTTY, CQ WPX RTTY, CQ 160, CQ VHF, and WW DIGI, indicating a broader context of contest record keeping. It explicitly states that late logs are not included in the records, ensuring data integrity. The page is maintained by the World Wide Radio Operators Foundation, Inc.

For UK resident amateur radio operators. Sell unwanted Ham gear for free

Home page of the Siskiyou County Amateur Radio Association located in northern California; Club Call Sign is K6SIS.

The AT-AUTO automatic antenna tuner handles 1.5kW CW operation, employing stepper motors under microprocessor control to precisely position a roller inductor and air-dielectric variable capacitor, avoiding relay-switched discrete components. This design choice prevents loud relay clacking and burning contacts, a common issue with competing products. The tuner features auto-retuning capabilities and receives periodic firmware updates, ensuring continuous improvement and added user-requested features. Its companion product, the _CX-AUTO_ coaxial switch, also features an embedded microprocessor controller. It enables selection of 1-of-8 coaxial outputs via a serial data interface. When integrated with the _AT-AUTO_, the tuner can associate specific coaxial outputs with amateur radio bands, automatically commanding the _CX-AUTO_ to select the correct antenna when the operator QSYs to a different band. Don Kessler began designing the AT-AUTO in 2005, with its debut at the 2006 Dayton Hamvention. Kessler Engineering also offers custom RF product design and electrical engineering consulting, specializing in Class-E RF amplifiers.

Importance of proper mobile setup. Operating an ham radio trasceiver setup into a mobile vehicle, implies attention to correct cabling setup and grounding.

Antenna gain and directivity explained in this article at radio electronics antenna pages

Online shop for obsolete electronic components, tubes and semi-conductors

Condenser company, maker of electronic components like capacitors, condensers

Interesting PDF Document on Lightning and Surge Protection

An article about the Rybakov 806 Vertical antenna. The classic Rybakov configuration is a 7.6m or 8m ( aprox 25 or 26 feet) wire fed through a 4:1 UNUN

Server allowing operation of the Winkey USB by K1EL with any Linux program with UDP keyer capability.

Anderson Powerpole connectors are becoming the standard for Raynet ARES and RACES groups as well as many Ham radio shacks round the world. This recourses page will give you a guide to Anderson Powerpole connectors in the radio shack.

Windows PC control program for the Icom IC-7300 transceiver. Power-on and Power-off by software BktNetInterface for JTDX and WSJT-X, audio recording, memory management, cw keyer management, Interface for other software

Tool Kits, Tool Cases, Datacom Tools, Telecom Tools

Dealer of digital and analog panel meters Products include portable test equipment, oscilloscopes, recorders and temperature sensing equipment

Windows shareware November Sweepstakes Log program

The WB5RVZ Genesis Radio G40 build log documents the construction of a 5W QRP 40m SDR transceiver kit, detailing each phase of assembly from power supply to RF filtering. It provides specific component lists, parts placement diagrams, and testing procedures for stages like the local oscillator, Tayloe detector, and RX op-amps. The resource highlights discrepancies between documentation versions and offers practical advice for builders, including a "virtual build" approach to preemptively address potential ambiguities in component identification and placement. It also addresses a specific "VK6IC Fix" for early board revisions, involving trace cuts and jumper wires for improved performance. The build log presents measured voltages and expected current consumption for various stages, such as the 4.9-5.0 Vdc on the 5V rail and under 100mA for RX current. It outlines critical adjustments like image rejection tuning, a common procedure for direct conversion receivers. The resource also includes practical tips for handling components like the 2N3866 transistor and its heatsink, emphasizing pre-assembly. It details the winding of two 1.45 uH toroidal inductors on T50-6 cores with 17 turns of #20 AWG wire, crucial for the RF path.

Shareware Windows logging program for the 10-10 QSO party

N8VI\'s powerpoint on satellite keplerian elements.

Listen to live police radio scanner from Dallas

MB7ICL Echolink Node Clacton on Sea, Essex The Gateway to the world

Portable Zero LLC manufactures amateur radio accessories, including tactical carrying systems and battery pack systems. The company produces the _Escort_ series Tactical Carrying System for _Yaesu_ FT-857D/891, FT-991, FT-817/818ND, and _Icom_ IC-706/703/7000, IC-7300 transceivers, available in Black Texture and OD Green. Additional products include the _Sherpa Pack_ for the _Yaesu_ FT-817 and the Field Power 12 and Field Power 3 Battery Cases. Portable Zero LLC, established no later than **2013**, manufactures its products in the USA, utilizing CAD design and CNC precision laser cutting. DXZone Focus: Portable Zero LLC | Tactical Carrying Systems | Battery Pack Systems | Yaesu | Icom

A device to allow the transmission of Morse on VHF/UHF FM-only transceivers by VK3YE

Suburban amateur radio repeater is a wider coverage machine with six receiver sites in the chicago metropolitan area.

Simple QRP projects, 10m, 6m, WSPR beaconing, sub-9kHz and other random stuff

Unequaled surge suppression for indoor/outdoor/military and custom needs.

The Delaware Valley Radio Association is a non-profit 501(c)(3) organization devoted to the promotion and preservation of the amateur radio hobby. The club is comprised of amateur radio operators and their families.

How to homemade antenna to be used with a handheld on the aircraft band to locate noise sources

Amateur Radio DXpedition to Huang Yan Dao (Scarborough Reef) in 1995, includes slideshow and dxcc country information

A page dedicated to servicing and building a 10 meter band moxon Antenna

Yaesu Certified European Distributor and Authorized Service Center based in Italy

Installing the Cumbria Designs X-Lock VFO Stabilizer, and Improving The TR7 Audio Quality

The Hamilton Amateur Radio Club operates the VE3NCF repeater, 146.760- and 444.075+MHz. It is open for use by all Hams

Hundreds of ham radio operators in the US Midwest rely on regional hamfests for equipment sales, technical presentations, and social interaction. This Yahoo Groups forum serves as a dedicated platform for promoting these events, allowing organizers to post announcements and attendees to find information on upcoming gatherings. The group's focus is specifically on hamfests within the Midwest, facilitating local and regional participation in these important amateur radio activities. The platform enables members to share details about various hamfest activities, including flea markets, vendor exhibits, and license examination sessions. While the group primarily functions as an announcement board, it also supports community discussion related to event planning and attendance. The resource helps hams locate nearby events, fostering engagement within the Midwest amateur radio community.

The official Summits on the Air discussion group.

A VHF UHF antenna for the buddipole antenna system

A Comparison of most popular Amateur Radio Digital Voice Systems DMR D-Star System Fusion presented by W9HPX Roland at the Charlotte Digital Radio Group in a comprehensive article about Digital Voice

FT1000D 250Hz Filter Modification

The life and times of development of a Linux D-Star repeater and dplus node.