metal dial plate

Slim Jim 2m Vertical - This VHF 145 MHz antenna is easy to build and with no radials. It shows equal gain of 5/8 lambda. It is light weight, you can hang it somewhere (on a tree may be) and work.

The flower pot antenna - A portable dual-band antenna working principally on 10 meters but also close to the 30 meter band. It�s compact, light, economical and doesn�t need any radial.

TLV40m antenna - Top Loaded vertical antenna for 40m Band with elevated radials

Top loaded vertical - Vertical Antenna for 40m Band with elevated Radials Top Load is a Mesh 2 x 1 meter (Netz 2x1m) enamelled wire 0.5 mm diameter (CuL 0,5mm)

Top Loaded Portable Vertical - A 3.5 Mhz top loaded vertical antenna built using 2 elevated radials by DJ9RB

How to make a Simple Dipole Antenna - It is very easy to create a simple 1/2 wave dipole, all you need is some lengths of wire such as the core of some mains flex or even a straightened out metal coat hanger, some co-ax cable and a connector for your scanners antenna input

L Match ATU for QRP - The L match is designed for the matching of random and long wires and should not be mounted in a metallic box/case, i used a small plastic food container which was the most expensive part of the project.

Radial System Design - Are the lengths of antenna radials related to the height of a vertical? By N6LF

An End Fed Half Wave Antenna - This end fed type of antenna was marketted in the UK and is a useful system for the portable set-up. Being a half wave, no radials or counterpose wires are needed.

Flat plate aerial for 23 cm - This is a simplified design for /P aerials yet offers about a +12dBd gain on 23 cm

Short radials for ground-plane antennas - Think your elevated radials always have to be full size? N6LF lets you in on some great ideas to lessen the “wingspan” of radials, especially near the beach.

Old Radio Parts - Vintage and reproduction electronic parts specialist - antique radio dials and knobs, 1940-1970 era phonograph cartridges, needles, idler wheels.

Old Radio Parts - Vintage and reproduction electronic parts specialist - Antique radio dials and knobs, 1940-1970 era phonograph cartridges, needles, idler wheels.

Rock-Sea Enterprises - manufacturers of fine quality decals and dial scales for antique radio.

W8BLV Dial Radio Club - DIAL Radio Club is affiliated with the American Radio Relay League. The DIAL Radio Club has a membership of 110+ members from the southwest Ohio area.

Metal Express - Cut-to-order metal specialis offer aluminium tubing

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

Pierce Aluminum - Distributor of aluminum and a manufacturer of finished aluminum products. Pierce Aluminum offers a diverse inventory and distributes a complete line of sheets, coils, plates, bars, structural shapes, tubes, pipes and extrusions in the most varied alloys and sizes possible

Top of the Dial - 160 metres band - Operating the 160 metres band in Melbourne Australia by VK3YE

Troubleshooting Traps - This article refers mainly to the old Cushcraft 1/4 wavelength AV series of antennas (12AVQ, 14AVQ etc) hence the references to radials. The R series (R5, R7 etc) are 1/2 wavelength antennas, and the radials are NOT 1/4 wavelength resonant.

HeliCoil - Inductance calculation for single layer, air-wounded coils and helixes up to about 800 MHz. Inductance calculations accuracy is around 1%. Also, coils with maximum Q for given inductance, resonant RF chokes, PI and T resistive attenuators calculations are provided. Skin effects, radiation losses and other minor side effects are not accounted in maksimum Q factor coils calculations. Program assumes using copper (Cu) enameled or silver (Ag) plated wire. Program is writen bilingual in English and Serbian by YU1AW

DTMF decoder - A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.

DTMF encoder - Generates dial tones using the Soundcard. A neat tool for sending out short sequences of DTMF tones.

TANKIT Priority listing - A free design aid for vacuum tube linear RF power amplifiers. Determine plate circuit operating parameters and design pi or pi-L tanks quickly and easily.

Inductor Design Software - RF toroid - A free too designed to assist in the selection of iron and alloy powder cores. RF toroid calculate the location of the Self resonate frequencies for series and shunt inductors.