A little over 60 years ago, a company called Times Microwave Systems (TMS) was born in Wallingford Connecticut. They made all kinds of wires and coaxial cables for many communications companies and the military. First I want to make it clear that I do not work for or get paid by TMS for this article or…
Category: Articles
Here you can find articles I’ve cached, that are no more available in the net or are very rare to be found. Where possible credit will be given to authors.
External Audio Equalizers
I want to get into this subject because it is important to good audio practice. This article is actually a second part to another article called “Microphone Frequency Response” which should be read first to fully understand the audio that radios and microphones are capable of. Reading that article first may clarify some of the statements made…
Heil PR-781 Microphone
This is one of those mics that only comes around once in a blue moon. Because of it’s quality and price, I thought it deserved a mention on my website. Read on and see what makes this mic so special. When Icom came out with their new IC-7800 elite ham radio, they asked Heil to…
Communication Speakers
Have you searched and searched for a good speaker for your ham radio? That perfect speaker that would let you hear voices through the noise and static without hiss? A speaker that isn’t fatiguing to your head after listening for a while to weak signals? If you are like me, then you answered yes. There are…
The Grid Yagi
The Grid Yagi (or Grid Quad) is a high performance yagi antenna that can be built with readily obtainable inexpensive materials. Described here is a 6 element 2 meter version with a boom length of about 1 wavelength. The boom is made of 11?2 inch pvc pipe, although any suitable material can be used, such…
ISS Amateur Radio Shack via Google Maps
Ham Radio inside the International Space Station
Quickie Vertical
Quickie Vertical Hear I am sitting in front of the rig listening to everyone working CQ World Wide, and I don’t really have time for this, but I hear a few interesting stations on 20 meters and try to call them. Trying to bust the pile up with 100 watts and my hustler dipole is…
About Loop Antennas
Loop Antennas The Principles of the Loop Antenna article was in a newsletter of the MDXC. The next three were from a talk that Mike Bates and James Dale gave to the Northland Antique Radio Club’s Radio Workshop at the Pavek Museum of Broadcasting.
Antenna Basics : Directional Antennas
Directional Antennas An antenna is known as “directional” if its pattern strongly favors a certain direction. A directional works by concentrating the signal in one direction at the expense of other directions. It is also commonly referred to as the “Beam” antenna. I am going to start with the earliest type of beam discovered, the…
Mobile Antennas
Mobile Antennas This is an area of hot competition among antenna manufactures. I am not going to cover how to mount your mobile antenna (Radio Shack sells everything you need to mount antennas), but the basic mobile antenna designs that most mobile antennas manufactures are using today. If you have just started reading my page…