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This homemade tube oscilloscope is based on the WaterMan Pocket-Scope 0510A, a 3 tube oscilloscope made in 1946.

The KA7OEI FT-817 pages, customizing/accessorizing the FT-817

Raspberry Pi WebSDR Receiver Project running SoftRock Lite ii Receiver (40m) and Raspberry Pi Model B

SM5BSZ article on building VHF RF amplifiers

Develops and manufactures radios and telecommunication devices for special applications. SDR Receivers, Digital HF transmitters, Digital SSB Exciter.

Utility program to verify, merge, and sort standard 2-line orbital elements files

Picture and specifications of the Yaesu FT-847

The GW3YDX Super Moxon antenna design improves upon the standard Moxon Rectangle by incorporating additional directors in a rectangular configuration, yielding enhanced directivity and gain. For the 6m version, modeling with 4NEC2 and EZNEC+ indicated a 3dB gain increase and a 26.5dB front-to-back ratio, with VSWR below 1.5:1 between 50.0 and 50.3MHz when optimized for 50.1MHz. This design achieves a narrower -3dB power point beamwidth of 60° compared to the original Moxon's 80°, contributing to better QRM rejection. The boom length for the enhanced design is just under 2m, approximately double the original Moxon's, with no increase in wingspan. Construction details include tubing lengths for 6m, 4m, and 2m versions, with specific dimensions provided for elements A through M, measured to tubing centers. For instance, the 6m version uses a 2160mm element A and a 2140mm element H. The design maintains a 50-ohm feed impedance, with practical models showing VSWR plots consistent with simulations after minor adjustments to driven element lengths. The article also references Moxgen software for initial Moxon parameter calculation and NEC/EZNEC model generation. The 2m Super Moxon version measures approximately 30" x 25", demonstrating the compact nature of the design across different VHF bands. The article highlights the antenna's performance in real-world DX contacts on 6m, achieving contacts with over 80 stations in the USA from a modest QTH.

A simple center-fed dipole made just with a thin-wall PVC pipe, aluminum tape, and RG-8X coax

A solutiom for the Ameritron AL-811(H) RF power amplifier, burnt panel meter lights. A common failure with the Ameritron AL-811 and similar amplifiers is that the panel meter lights burn out prematurely. These bulbs are usually integrated into the actual panel meter. The solution for this is to provide the meter backlighting with LEDs.

Picture and specifications for the Icom IC-9100

The Smith Chart was originally created many years ago as an RF engineering aid by Phillip Smith of RCA.These pages includes extesnive documentation on smith carts.

QSL Cards from ALL 338 DXCC Entities, deleted countries QSL Cards, other interesting cards

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.

A home made yagi antenna featuring 6db forward gain and 22 Db front back

A folded dipole using twin lead By W8HDU

On-line Log search for 5U5R DX Pedition to Niger 2017

Need to interface both a TNC and the computer soundcard? This is a ICOM 756PRO ACC1 audio/keying/FSK interface by WA0SXV

Operating a specialized DX cluster, this service provides real-time DX spots exclusively from stations confirmed to be _Log of The World_ (LoTW) users. This unique filtering mechanism allows DXers to prioritize contacts with stations that are highly likely to upload their logs to LoTW, streamlining the process of achieving confirmed DXCC or other awards. The cluster aggregates data from various sources, presenting a focused view of active LoTW participants across multiple bands. By narrowing the scope to LoTW-active stations, the platform significantly reduces the effort required for QSL management, as users can confidently pursue contacts knowing a digital confirmation is probable. This targeted approach is particularly beneficial for contesters and DXpedition chasers aiming for rapid award qualification, offering a strategic advantage in identifying viable contacts. The service supports both web-based access and traditional telnet connections, ensuring broad compatibility for amateur radio operators. It processes thousands of spots daily, with a focus on delivering accurate and timely information relevant to LoTW users, facilitating more efficient and productive operating sessions.

Canadiam ham radio dealer for Alinco, Alpha Delta,Bencher, Ameritron,Anli,Butternut,Comet,Daiwa,Cusfcraft,Icom,Kantronics,Laha,Vectronics,MFJ,Yaesu products

An extension of the excellent decoding software JT65 HF by Joe W6CQZ for amateur radio digital mode JT65

Remote ham radio operation through a Raspberry Pi

VSP Manager is a software program that creates serial port pairs which allows software programs to talk to each other using Cat commands. This virtual com port emulator is offered FREE to Ham Radio Operators.

2M Yagi made from Measuing Tape by NT1K

YY5PER video of a Icom IC-7000 modified for TV reception

This is the table of contents to a list showing how the radio frequency spectrum is allocated to different users in the United States.

Garmin Kenwood Icom Vertex Alinco and more

Digital Voice Transceiver Project This Project began to explore the use of the DVSI AMBE 2020 voice compression chip and also the ADF7021 single chip VHF RF Transceiver from Analog Devices.

This modification will allow the MkIIG to transmit on most of the frequencies that it receives on.

A sourge arrestor for PL 259 connectors. A voltage surge arrestor to limit the voltage that may come back down the wire or coax after there has been static build up

Wood and plastic broadcast radios from the 1930s and 1940s, lovingly described and profusely illustrated.

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

A museum of thousands of telegraph keys, radios, microphones, enigma cipher machines, and scientific instruments.

A podcast devoted to long-distance radio reception on the AM broadcast band. AM, or Medium Wave (MW), signals can travel thousands of miles.

Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.

World of radio, continent of media, mundo radial broadcast schedule

A 21 MHz Four Square Beam Antenna This popular antenna for the lower bands, can also work well on 15 meters, QST Article

Building a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use.

Shure incorporated, microphones and audio electronics

How to build a no tuner 80 meter, half wave wire antenna that takes full advantage of the phone portion of the band known as 75 meters.

Norm's Rotor Service specializes in sales, service and parts for ham radio antenna rotators, antenna rotator, antenna rotors

Since 1998, Radio Age has offered for sale antique radios from the Golden Age of radio

Broadcasting your radio from your home using the SHOUTcast Radio DNAS Application

A VHF UHF 5+5 elements yagi antenna by CE4WJK

Yaesu FT-950 with a large picture at RigPix

Buy old manuals, military radios, kits, receivers online shop

Live audio feed from Denver Colorado Police

Interesting post with a practical video of using solar panel with a yaesu ft-857.

Ham radio tower project by VK6YSF

This article explain how to homebrew and use an HF antenna analyzer by simply adapting a Windows PC, micro-controller and a DDS evaluation board by K6BEZ