| With its 30 cm long, 3.2 cm diameter (12 x 11 ⁄4 inch) ‘bundled’ ferrite core, the ‘Ultima’ high-performance loopstick antenna covers m...
Richard Q. Marris (13)
| The lower frequency regions of the radio spectrum are probably the most unknown, and neglected by the more recent generations of radio list...
| Over the years, the writer has often needed handy, external aerials for short, medium and long wave radio receivers, such as communicatio...
| It had always seemed logical to the writer that when ferrite rods first appeared in broadcast receivers, the technique ought to be usable...
| This is a short, efficient, horizontal indoor spiral transmitting / receiving antenna, using 139 feet (approx. 42 m), that can be compa...
| This transmitter was designed to provide a frequency-stable, near-fool-proof, RF power source for use in the initial design of new types of...
| The original experimental QTC transmitting loop antenna was built in late 1990, tested immediately, and details were published in the June...
| Older readers will remember the original flat-top antennas of the 1920s, 30s and 40s festooning battleships and other warships, ocean-goi...
| The performance of the average portable radio (not including the tiny plastic one and the huge ghetto blaster) is usually quite adequate f...
| The quadriform is an experimental 3.5 MHz transmit/receive antenna of mini dimensions, consisting of four high-grade robust ferrite rods i...