Search results

This blog is maintained as a resource for the IOMARS and other persons interested in Amateur Radio.

An attempt to explain why I love this strange hobby

With Varying Frequency - Amateur Radio Ponderings

PowerFilm, Inc. develops and manufactures thin, flexible solar modules for OEM, military and consumer needs.

US National Communications Sports Frequencies

Single antenna with multiple polarization for diversity, diveristy receivers and propagation effects on signal polarization

This site is about Amateur Radio Clubs in our general area. We are here to promote Ham Radio and the Clubs in South Carolina that do the same.

VHF + multi-multi contest station from EM31 in East Texas

The Maria Maluca HF multiband antenna as designed in 1957 by PY2BBP is a directive antenna for 15 meter and a passive element that works as director and reflector in different bands

This article will explain a few of the ways author use an external SDR and Linrad to enhance his K3 experience. Linrad is one of many available SDR receiver programs. The same could be done with any radio that lets you access its IF frequency output. Article from NCJ Nov Dec 2019

Cmpter Electronics specializes in the design and manufacturing of RF coaxial connectors, RF adapters, and RF cable assemblies, serving diverse applications across datacom/telecom, automotive, instrumentation, aerospace, and defense sectors. Their product line includes RF coaxial terminations, attenuators, and waveguide to coax adapters, catering to specific needs in radio frequency systems. The company also offers precision adapters and connectors, alongside glass beads and test cable assemblies, indicating a focus on high-quality components for demanding RF environments. Their resource center provides valuable information, including an "RF Made Simple" section and a product catalog for download, which assists engineers and technicians in selecting appropriate components. The product named system helps in identifying specific parts, streamlining the procurement process for complex RF solutions. With a comprehensive range of RF coaxial cables and related tools, Cmpter Electronics positions itself as a key supplier for critical infrastructure requiring reliable signal integrity. Their offerings support a broad spectrum of RF applications, from basic connectivity to advanced test setups.

The Delta Amateur Radio Society promotes the hobby of Amateur Radio in the community and encourages community involvement.

Amateur radio blog from UK

SWL and amateur radio by IZ1CRR

RF amplifier products from NP Technologies, Inc. encompass a wide array of specialized designs, including highly linear Class A broadband amplifiers, crucial for maintaining signal integrity across various frequencies. Their portfolio also features cell band amplifiers, specifically engineered for cellular communication infrastructure, and pulse amplifiers, which are vital in applications requiring high-power, short-duration signal bursts. The company's manufacturing capabilities extend to AM and FM broadcast amplifiers, supporting radio transmission systems, and military VHF amplifiers, designed to meet rigorous defense specifications for robust and reliable communications. NP Technologies, Inc. emphasizes comprehensive development, design, manufacturing, and testing processes for all its RF amplifier offerings. This integrated approach ensures that each product, from initial concept to final deployment, adheres to stringent performance and reliability standards. The company's expertise in these areas allows for the creation of custom solutions tailored to specific client requirements, addressing complex RF challenges in diverse operational environments. Their product range demonstrates a commitment to serving multiple sectors, including commercial broadcasting, telecommunications, and defense. The focus on specialized amplifier types underscores their technical depth in RF engineering.

WSJT New Software for VHF Meteor-Scatter Communication QST Article December 2001 by K1JT

Instructions on how to install the Yaesu DVS 6 option module into a Yaesu FTDX 3000

ICOM blog article on how to remotely control your ICOM transceiver using the Icom RS-BA1 Internet Protocol (IP) Remote Control Software supporting most of recent ICOM HF transceiver products

Displays a placeholder page indicating the upcoming launch of a personal website for F5MSU Bruno. The content briefly notes the operator's interests, including amateur radio, genealogy, and motorcycling. While the site is not yet active, it provides contact information for inquiries regarding the future content. The page is presented in French, catering to a European audience interested in personal profiles of ham radio operators and their diverse hobbies. The resource is categorized under Ham Radio/Personal Pages/Europe, suggesting an intent to share DXing, contesting, and general operator profiles.

Ham radio blog in English and Dutch. The radio adventures of PE4BAS.

Horizontal polarized omni directional 50MHz Antenna. This antenna is intented to use in a contest station as a second system beside the stacked yagi beam system. An omnidirectional systeem can be an advantage when it comes to short openings on wich the operator must react quickly.

Making a CW QSO by John Shannon, K3WWP

Article on propagation basics. The ground wave used for radio communications signal propagation on the long, and medium wave bands for local radio communications

Hanging Judge Hamfest, Fort Smith, AR Fort Smith Area Amateur Radio Club

K3AS.com Home Page, Discover SSTV, See K3AS SSTV CAM, Live SSTV Images Received by my Station, View My Station Equipment.

RadioMasterList, a comprehensive receiver and transceiver directory. Performances and specifications for every radio set

Reducing and removing RFI Noise

An Google Maps interactive layer showing Australian amateur radio repeaters. You can navigate and zoom as required and click on a repeater-site icon to display frequency, ctcss and other details and notes for that repeater.

These antennas are larger versions of the small loop antennas that were part of the cardboard back panel of older AC/DC five tube AM radios. Loop antennas of this type were popular in the very early days of radio. They are still useful today for long distance reception of AM radio stations

A simplified explanation of decoding West German numbers messages transmissions without a computer.

DX and IOTA Calendar. Upcoming DX IOTA Expedition on DXNews.com DX calendar page

Kazmo’s Kustom Kreations a cool accessory - aka Outboard Heat Management Project by w4kaz

Multi-Polarized antennas for Land Mobile Radio, Indoor & Outdoor Networks, Home Wireless, Mining Communications, Remote Monitoring, HAM & Scanner, Cellular, WiFi, Wimax, M2M, GPS, LTE, and GSM.

Printed circuit board design for Macintosh

Restigouche NB

High Frequency Expermental Beacon "WV". The Beacon operates on the frequency of 13.55567mhz. This Beacon is very low power. It operates under Part 15 of the FCC Rules and Regulations. It transmits with only 1.5 milliwatts of power

Electronics surplus outlet in Redondo Beach, CA

PilotMORSE is a great home solution for private pilots or aspiring professionals who want to hone their Morse code skills used to identify VORTACs, localizers, and marker beacons. PilotMORSE takes you through the alphabet with an advanced neural network algorithm that adjusts the pace of presentation based on your responses.

Pagina dedicada ao radioamadorismo, montagens eletronicas, projeto, faça você mesmo, vhf, uhf, satelites e muito mais

The _Touch CPO_ circuit offers a unique method for Morse Code practice, eliminating the need for a physical key. It leverages the versatile IC555 timer, configured as an astable multivibrator, to generate an audio tone. Users can adjust the tone's frequency by manipulating a 100 K variable resistor connected between pins 7 and 6 of the IC555, providing flexibility in the practice experience. Volume control is achieved via a 10 K variable resistor, while a 1 K Ohms preset at pin 4 of the IC555 allows for fine-tuning the touch plate's sensitivity. The design connects the touch plate to the base of a BC147B transistor, a configuration noted for its flexibility regarding the length of wire between the transistor and the touch plate. The author's prototype successfully used a 9 cm wire with a 3 x 6 cm aluminum plate. This project also suggests an alternative application as a touch-operated doorbell, demonstrating the circuit's adaptability. The design emphasizes simplicity and ease of construction, making it accessible for hams interested in DIY electronics.

Ham Blog dedicated to dxing and IOTA

Article appeared on 73 amateur radio today in 1999 on how to unlock the secrets of sending precise Morse Code. Article contains hints on how use the stright key and the sideswiper key, but even the electronic keyers or the semiautomatic keys.

VHF Yagi antennas with low Q, extending the boom.

NCC was formed in 1989 to further the efforts of contesters interested in the CQWW and ARRL DX contests. The member area of the club is a 175 mile circle that includes major parts of Ohio and Pennsylvania.

Can Home Solar Power and Ham Radio Coexist? It is possible, with minimal interference from the solar power system, provided you make some modifications.

This guide focuses on soldering for the beginner and explains how you can solder a variety of components using a few different techniques - from the classy to the downright caveman.

The IC703 features a built-in DSP filter and auto ATU as well as speech processing an a CW keyer with 3 message memories. It is an ideal all-in-one ham station for QRPers.

Listen to Ingham County Michigan Public Safety, County Sheriff, Police and Fire

50 Ohm Coax Antenna Power Splitter and Matching Network