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WiNRADiO for Mac, WiNRADiO provides Apple Macintosh support for our most popular receiver, the WR-1550e, a medium-range external receiver with frequency range 150 kHz to 1.5 GHz

WiNRADiO Communications manufacture radio communications equipment for a very wide range of applications. Our customers include professional communications radio users in government, military, security, surveillance, spectrum monitoring organizations, telecommunications, industry, as well as radio and computer enthusiasts.

Sirtel produces a wide range of radio and telecommunications antennas

Allow 137 Mhz range by Steve Warley

ShipPlotter displays complete information about ships that are within VHF range of your position using the Universal Automatic Identification System (AIS).

located in the heart of Southern California, is dedicated to the advancement of Ham Radio

Very strange morse keyers, like Onion chopper CW key, Handshake CW key, Chopsticks CW key, Typewriter CW keyboard, Refrigerator CW key by OH6DC

A ranking of receiving antennas based on noise being evenly distributed in all directions. These rankings are most accurate in the frequency range of AM broadcast, 160 or 80 meter bands

Midland GXT-900 FRS/GMRS 30-Mile Range Two-Way Radio product review

Located in France, DXBeam designs and manufactures a range of monoband, dual band and triband antennas, rotary dipoles, Moxons and Yagis

Ranger mods by WA1HnyLR, The TimTron

Orange County Sheriff Live Audio Feed at radioreference. Florida USA

The diagram below shows the basic arrangement of the 2m Half-Wave version of the antenna. A 6m diagram is available too.

Build this simple and cheap 70 MHz Exciter and start to transmit Digital Television by Jean-Francois Fourcadier

Simple, inexpensive and lots of fun! Here is an easy to make home brew antenna that can get you on the air working satellites or be built for use as a portable hand held antenna to extend the range of your HT.

CB Radio and 10 through 12 meter band radio dealer. Ranger Communications factory authorized dealer. Service 10 and 12 meter and CB radios.

General purpose RF Wideband PreAmp based on BSX-20 transistor with a frequency range 14-550 MHz

Gamma match antenna is an antenna 1/2 additional lambda with the impedance matching more flexible arrangements (var capacitor) by sliding through the gamma match/road.

IC‐2300 MARS/CAP mod expanded frequency range 136‐174 MHz

Motorola Radius Two Way Radios, Kenwood, Maxon, Midland, Ranger, FRS, GMRS Radios

This receive only loop covers a frequency range of about 5 MHz to 22 MHz and is built from readily available parts.

A 1:1 current balun that offeres a almost flat swr curve from 1 to 30 MHz

This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.

The Icom IC-7300 is a popular HF transceiver among amateur radio operators, known for its advanced features and performance. This modification guide focuses on enabling extended transmission capabilities, specifically for MARS and CAP frequencies. The instructions are based on the work of PA2DB and include detailed steps for removing specific diodes to unlock additional frequency ranges. Before proceeding with the modification, users are advised to take necessary precautions, such as ensuring the radio is powered off and using ESD protection. The guide emphasizes the importance of using appropriate soldering techniques and tools to avoid damaging sensitive components. A video demonstration is also provided to assist users visually in performing the mod. While this modification can enhance the functionality of the IC-7300, it is crucial to note that it may void the warranty and should be undertaken at the operator's own risk. The guide serves as a valuable resource for those looking to expand their operating capabilities with this versatile transceiver.

This strange looking antenna is a combination of Coupled-Resonator principle by K9AY and a quarter stubs to achieve low angle radiation pattern. Designed with 4nec2 NEC based antenna modeler and optimizer for 145/220/440MHz bands

Some unarranged docs about yaesu VX-5R, including EVE software.

The array consists of 7 vertical antennas arranged as 6 verticals in a hexagon shape plus 1 additional vertical in the center of the hexagon

The document provides a detailed guide on modifying an inverted-L antenna to include the 160 meters band. This enhancement allows amateur radio operators to utilize the lower frequency effectively, which is crucial for long-distance communication, especially during the night. The inverted-L design is popular due to its compact size and ease of installation, making it suitable for various environments. By adding top band capabilities, operators can engage in DXing and contesting on 160m, expanding their operational range and opportunities. The guide includes practical tips and considerations for construction, ensuring that the antenna maintains its performance across the extended frequency range. It discusses the necessary adjustments and materials required for the modification, along with potential challenges and solutions. Whether you are a seasoned operator or a beginner, this project can enhance your station's capabilities, allowing for more versatile operations and improved signal quality on the 160m band.

International Components Corporation has an extensive range of electronic components consisting of audible signal devices, speakers, microphones, capacitors, electron tubes, connectors, and accessories designed in recognition of the diversity of applications and special characteristics encountered by designers in today's complex world.

This HF contesting resource site has a large range of articles, tips and techniques, contest writeups, bandplans, links, and a fine range of Ham maps.

Long Range Wi Fi Antenna by AB9IL

Building an omnidirectionnal antenna for the 23 cm band, 1240 - 1270 Mhz

The long range bandplan for 70 MHz by OZ2M

Offer a wide range of homebrewing projects mainly for VHF UHF operations. From vhf antennas to preamplifiers, chargers and power supplies

The multiuser/multitasking BayCom Packet Terminal Driver program is a general purpose communications package for communicating with a BayCom modem attached to your IBM-PC/clone in conjunction with the TFPCX Baycom driver software. The software will also work with a normal TNC if it supports KISS mode, such as the Kantronics range.

The digital wattmeter project was created for the purpose of measuring power in the range of 300nw to 30w.

Hellschreiber is an interesting ham radio mode developed back in the 20s. It is a bit strange and different, but fun. I'll explain what it is, then I make a couple contacts during the Hellschreiber contest.

Italian shop offer a wide range of products for industrial or military surplus.

Icom Kenwood Yaesu MyDel dealer, offer a wide range of ham radio products, transceivers, antennas, rotators, microphonrs, aerials, dummy loads, rf amplifiers and scanners based in UK

A range of easy-to-build RFI filters by John Regnault, G4SWX

The widest range of stocked components for the electronics, electrical and mechanical engineer.

High Gain Wi-fi Helical Antenna by AB9IL

This antenna is designed to be mounted off the side of a tower. Works on 136-153 Mhz range but also on 70 cm band

This handy and cheap portable dipole can be folded and backpacked, carried in use, and adjusted to a very wide range of frequencies by KV5R

This modification will expand the tx frequency range of the Yaesu FT-991 from allowing just ham radio bands, to all bands 1.8 - 30MHz and 50-54 MHz.This information is solely for use by licensed members of MARS (Military Affiliate Radio System) or CAP (Civil Air Patrol)

Two Delta-Loops in phase. The purpose of this article is to propose an antenna with a high gain, a high efficiency and a very low price that is easy to build for any frequency.

This is a prototype of the WA4DSY 56KB RF modem. It is intended for use on amateur packet radio networks. The modem generates RF in the 28 to 30 mhz range and requires and linear transverter to convert the signal to a UHF or microwave ham band

Dodgy plans to make Archimedean spiral antenna for RTLSDR software defined radio receiver. Made of two equal lengths of coaxial cable seems to be the easiest circularly polarized antenna to make that will cover a broad range of the rtlsdr dongles E4000 tuners

The document titled 'Extending the Range of Your Handheld' by WG7S is a guide on how to extend the range of your handheld VHF UHF transceiver by using an external antenna. It provides information on comparing popular models, selecting the right antenna, and resources for amateur radio antennas.

Various configurations of the Z Match Tuner are tested for power efficiency over a wide range of antenna load conditions