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HamBlog is a weblog host for Amateur Radio operators.

A nice presentation for beginners by Radio Club of Tacoma

A home made 4 element yagi antenna that can be easily adapted for 10 meter band

Laser Engraved, Etched and Marked gift items for Amateur Radio Operators

Home of the Radio Teacher Project Website, study guides, class documents and videos to be used by instructors

Off Road Enthusiasts that use Amateur Radio for recreation and public service.

Minnesota Amateur Radio (MARC)

Learn which are the top ten reason why you should operate in portable mode

The K9IU Indiana University amateur radio club provides a robust station environment for its members, located within the Indiana Memorial Union. This setup includes a variety of radio resources, making it accessible for students and faculty interested in two-way radio communication, from local ragchews to international DXing. The club's facilities are available for use at any time, fostering an active amateur radio community on campus. Members can engage in various aspects of the hobby, utilizing the club's equipment for operating on different bands and modes. This hands-on access supports learning and practical experience in radio theory and operation, which is crucial for new hams and seasoned operators alike. The K9IU club serves as a central point for amateur radio activities at Indiana University Bloomington, aligning with the university's broader academic and extracurricular offerings.

Interfacing the Jabra 9450 flex wireless headset to the Icom IC 7300 ham radio trasceiver.

Forum post on differences between the Acom 1010 (single 4CX800) and Acom 1011 (Two 4CX250B)

The Club Radio Amateur de Québec (CRAQ) is a prominent amateur radio club based in Québec, Canada, dedicated to fostering interest and participation in amateur radio. It provides a platform for local hams to connect, share knowledge, and engage in various radio-related activities, including **DXing**, contesting, and technical experimentation. The club supports its members through regular meetings, technical presentations, and organized operating events, aiming to enhance their skills and enjoyment of the hobby. CRAQ also plays a role in public service communications, often collaborating with local authorities for emergency preparedness and response. CRAQ's activities include operating club stations, organizing **field day** events, and offering training sessions for new licensees. Members frequently participate in provincial and national contests, contributing to the club's competitive standing. The club maintains a network of repeaters, providing reliable local communication infrastructure for its members and the broader amateur radio community in the Québec area. These resources facilitate daily QSO traffic and serve as critical links during community service operations.

North East Kansas Ham Radio Club

UV-3R reviews at eham.net

The **HamRacer** voice keyer, a Windows-based application, is showcased in this video, illustrating its utility for radio amateurs participating in SSB contests. It functions as a synthesized PC-based voice keyer, specifically designed for HF and VHF SSB contest operations, allowing operators to transmit pre-recorded or text-to-speech generated messages during rapid-fire exchanges. The demonstration includes actual recorded QSO examples from a contest, featuring contacts with stations such as SP6OWA, S57O, OK1IEI, 9A1DL, OE1PAB, OK1GTH, and 9A1E. These examples highlight the software's practical application in a live contesting environment, demonstrating how it facilitates contest participation for operators who might otherwise face challenges with traditional voice keying. The resource provides a direct look at the software in action, emphasizing its role in promoting inclusivity within the amateur radio contesting community. It details the use of Windows SAPI for speech synthesis, a core component of HamRacer's functionality.

Eham reviews of the dual band kenwood TH-D7a/e series handheld transceiver

Measuring the output impedance (Zs) of solid-state broadband HF amplifiers operating in class AB eham article by ZS6BIM

The Kenwood TS-870S HF transceiver features two state-of-the-art 24-bit 20 MIPS DSP chips, providing over 100dB out-of-passband attenuation and CW bandwidth adjustable to 50 Hz. It operates across 160-10 meters with 100 watts output, incorporating digital filtering, a beat canceller, and 100 memory channels. The radio also includes a transmit equalizer, RX antenna input, and a K1 Logic Keyer, enhancing signal processing and operational flexibility for amateur radio operators. Advanced capabilities include IF stage DSP, dual noise reduction, and an auto notch filter, all contributing to superior signal reception and clarity. The TS-870S offers a variable AGC, voice equalizer, and an RS-232C port for computer control, with Windows™ software supplied. Its built-in automatic antenna tuner functions on all bands for both transmit and receive modes, streamlining station setup and operation. Available accessories such as the DRU-3A digital recording unit, SO-2 high stability crystal oscillator, and VS-2 voice synthesizer option further extend the transceiver's utility. The unit requires 13.8 VDC at 20.5 Amps and is supplied with an MC-43S hand microphone, making it a comprehensive station component.

CCAE Software Log provides a dedicated platform for amateur radio operators to manage their QSO records, offering functionalities beyond basic logging. This application supports various operational aspects, including contest participation and general DXing activities, catering to the needs of radio enthusiasts who utilize classic equipment such as Collins radios. The software integrates features for efficient data entry and retrieval, allowing users to maintain a detailed history of their contacts. It is designed to be intuitive for operators focused on collecting and preserving their radio communication logs. The program's development by the European Collins Collector Association (F6HOY) suggests a focus on reliability and specific utility for vintage radio enthusiasts. Its core function is to serve as a robust **logbook software**, facilitating organized record-keeping for ham radio operations.

Provides information and resources on Amateur (Ham) Radio from N0UN. Ham Radio Friends, Shacks and Blog by N0UN

Noise canceling DSP for ham radio good for Icom, Yaeu, Kenwood and any kind of radio

A facebook group where all women and girls in ham radio can gather together to share the common interest of amateur radio.

This project is an APRS iGate for digipeater aboard the ISS. As the ISS pass over the iGate location, the TNC decoded the audio tones and creates data packets the Raspberry Pi can receive.

The Icom IC-7300 is a groundbreaking Software Defined Radio (SDR) transceiver that revolutionizes the way amateur radio operators interact with the spectrum. With its large 4.3-inch color TFT LCD touch screen, users can easily navigate through various functions, including real-time spectrum scope and high-resolution waterfall displays. This allows for quick adjustments and enhanced signal awareness, making it easier to find and engage in QSOs. The touch screen interface provides a modern approach to radio operation, replacing traditional buttons with virtual controls that can be accessed with a simple touch. In addition to its user-friendly interface, the IC-7300 boasts advanced features such as IF-DSP filtering, audio scope functions, and a multi-dial knob that combines tactile control with touch screen flexibility. These capabilities enable operators to visualize signals and make precise adjustments to their settings, ensuring optimal performance during contests or casual operating. The IC-7300 is designed for both beginners and experienced hams, making it a versatile addition to any shack. Its innovative design and functionality truly embody the spirit of modern amateur radio.

The Flight of the Lockheed Martin ARC Amateur Radio Balloon Repeater

The Medina County Amateur Radio Corporation (MCARC) is an amateur radio club based in Medina County, Texas, dedicated to promoting the hobby and providing community support. The organization actively participates in events such as **Winter Field Day 2024**, demonstrating operational readiness and emergency communications capabilities. MCARC focuses on fostering camaraderie among local hams and engaging in various on-air activities, contributing to the overall health of the amateur radio community in its region. The club's activities include regular meetings and participation in significant operating events, which serve to enhance members' technical skills and operational proficiency. By organizing and engaging in events like Field Day, MCARC members gain practical experience in setting up and operating portable stations, often under challenging conditions. This hands-on experience is crucial for developing robust **emergency communications** skills, which are vital for supporting local communities during times of need.

A J-pole antenna plan for 50 MHz based on the DK7ZB design

This free amateur radio world map is a scalable vector graphics drawing. Two formats are available a SVG vector graphics and a high resolution PNG bitmap format in 600 DPI resolution. Current map picture has been updated on 2023.

High quality ham radio t-shirts. Made by Hams for Hams. Made in the USA.

TA2MOG (HB9TOW) website. Ham and CB radio pages in Turkish, forum, with a summary English section. Info in visiting Turkey.

SWR and Transmitters Friends or Foes!, making sense of it!

A forum thread about tuning with the Kenwood TL-922 TL-922A Power amplifier

Formed in 1987, serve the west part of Cambridgeshire that straddles the valley of the river Great Ouse and was the old county of Huntingdonshire. This includes the market towns of Huntingdon, St Neots, St Ives and Ramsey.

dedicated to the discussion & development of ALL amateur / ham radio Digital Voice & Data communication

An article that explain with simple concepts and basic theory the correct usage of antenna tuners. It covers some aspects of common questions newcomers have on what antenna tuners are for, and what antenna tuners will never do.

Baofeng UV-5R uses RS232 to communicate or programming with the PC software and you can make your own programming cable with a few components.

Reviews of the popular portable HF transceiver by Elecraft

Demonstrates the fundamental principles for connecting a personal computer to a ham radio transceiver, specifically for utilizing sound card-based digital mode software like those in the MM Hamsoft suite. It details the basic hardware setup, emphasizing the use of shielded leads and proper audio routing from the radio's output to the sound card's input, and from the sound card's output to the radio's microphone or data input. The resource highlights the critical need for transmit attenuation, suggesting a 100:1 voltage divider to prevent overdriving the transmitter's audio stage, and mentions the optional addition of ferrite beads and decoupling capacitors for RFI mitigation. The guide also points to external resources for more detailed pin-outs and interface schematics, such as a specific QSL.net page, and recommends consulting the help files within MM Hamsoft programs for interfacing specifics. It underscores that while the process is straightforward, understanding the audio level management and proper cabling is key to successful operation. The author, VE5KC, provides practical advice drawn from common issues encountered by operators setting up digital mode stations.

Blog site for various home brew projects including antennas, power dividers etc

Ham-Spirit.de amateur radio classifieds from germany

Isotron antennas are antennas of reduced size, without tuning. On 40 and 80m band, it is made of two plates into v whose angles are connected by a coil. In this article the description of a home made realization for the 40m band.

Cobham Microwave has a long term experience in Microwave Systems and Components. Their five areas of capabilities are Systems and Components: Diodes & Modules, Ferrite Devices, RF Filters, and Waveguides.

eHam users reviews on MFJ 989 C HF Antenna Tuner

Diamond Antenna CP22E VHF base station antenna review. This antenna has a remarkable design achieving 5 dBi directivity in a slim low-profile design.

Yahoo Group dedicated to the Amateur Radio Community, not the Commercial Sector.

This document has been produced by examining the data going into and coming out of the TH-D7 HT from Kenwood.

A great amateur radio shack desk done with a second hand solid core door, measuring 32 inches wide by 80 inches long.

Students interested in HAM activities at Indian Institute of Technology, Bombay.

How much better is an N over SO-239 at VHF/UHF, a discussion topic at eham