ameritron als 600

A comparison of commercial 4m verticals - Ian Hogan G6TGO has recently tried out two different commercially-built vertical aerials for 4m, and has prepared this article to share his findings with us.

Small Transmitting Loop Antenna Calculator Priority listing - A free online calculator for making all of the calculations required to design and build small transmitting loop antennas, also known as magnetic loops by 66pacific.com

The HB9CV antenna - Basics and principles of the HB9CV antenna by Rudolf Baumgartner. This antenna join electric advantages of the two elements direct feeded aerials with the mechanical advantages of the Yagi antennas, in French.

VLF-LF and the Loop Aerial - The article discusses the theory of loop aerials for receiving and how they reduce the level of local noise by Lloyd Butler VK5BR

Some plain facts about multiband vertical antennas - There is considerable confusion as to what exactly a multiband vertical antenna is. The confusion concerns the method of feed, how much mismatch one can expect, how many radials are required, how the particular antenna is built for multiband use, plus some other points.

The Grid Yagi for 144 Mhz - 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, shown

Adding to an Arrow Satellite Antenna - By adding a tripod for mounting, bearing indicators, and a pre-amplifier, you can create an impressive antenna system for picking up FM signals from AO-51.

Antenna & Ground Help - Radials & Counterpoise

Antenna Tuning Unit - This homebrewed antenna tuning unit also incorporates a 50-ohm QRP dummy load, power meter (1 or 10 Watts full scale), and SWR meter

EI7DAR Dundalk Amateur Radio Society - Dundalk Amateur Radio Society. Ireland Calsigns EI7DAR EI0W

CRES ARC - The club was established in 1962 and serves the central Ohio area. Its goals include stimulating interest in amateur radio, the exchange of technical information, emergency readiness, and social activities for the membership and their families.

M5AML John - M5AML - SSTV, Aerials (antennas), SSTV, Rallies, UK prefixes

Learn CW Online - At LCWO you can learn Morse telegraphy (CW) online in your browser. You don't need to install a program on your computer, and you always have your personal settings available, from any computer on the globe with an internet connection. You can also easily track your progress by means of different statistical functions.

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

MicroMetal - Manufacture high quality low cost powder cores with a wide selection of shapes

Anderson Metals Corporation, Inc. - Brass, aluminium tubing, pipes

Professiona plastics - Buy plastic sheet, plastic rod, plastic tubing, bar, tube and plastic film from professional plastics. buy plastic materials online

Frequencies for using digital modes - These frequencies are to be used as a guide to find the related signals. They have come from several sources, and are, in no way, guaranteed to be complete, accurate, or inclusive.

Sights and Sounds of Digital Signals - Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ

I6HWD Morse Key Collection - A collection of morse code keys including verticals, semi atumatic, automatic and other accessories

RF Circuit design basics - Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

ARC Vintage Radio - Here you will find tubes, manuals, radios and other related radio items for sale.

Free Sun Power - Free basic and advanced system design tutorials for every component and aspect of solar power. Plus system sizing calculators, battery bank calculators and wire size calculators

HRIS2 Priority listing - This program can be used for statistics of sending QSL. Also it is possible to use her as the help data on DX-ing (DX VIA, ADDRESS MNG, IOTA-ped.) The information is brought in base delivery of the program on " DX via " and " Address QSL mng " from bulletins 425 (with 205 on 858) by US7IB

A single board no tuning 23 cm transverter - This transverter uses bandpass filtering with printed hair-pin filters. By KK7B