high voltage transformer

10 elements 70MHz Low Noise LFA Priority listing - A 10 element 4M LFA Yagi. Flat SWR across the band, easy build with no matching to install. No power limit high gain.

Low-Noise LFA Yagi for 70MHz Priority listing - Super flat SWR from this high gain easy-build Yagi. Great for home or fild day.

Dual Band Yagi 28Mhz and 50Mhz Priority listing - NO Traps or coils, NO matching required. Direct 50 Ohm feed. Easy to build and nothing else like it! Enjoy 50/28 with one feedline to a dual band high gain Yagi by G0KSC

Tri-Mode Buffer Amplifier Box - The TMB-1 is an RF amplifier unit / receiving accessory that can be used with a low-impedance broadband loop, a high-impedance terminated loop (such as a Pennant, Flag, or Kaz Delta), and whip (telescoping rod) antennas.

Eggbeater II Omni LEO Antennas - Presented here is a high-performance, circularly polarized omni-directional antenna that is easy to build, easy to tune, inexpensive, and will work all the mode J Low Earth Orbit (LEO) satellites

A High Gain Mode J/B Yagi Antenna - A 70 cm and 2 m arrow-like antenna by DF8GH

Highfields Amateur Radio Club - Amateur radio club from Cardiff Wales UK

CWS Coil Winding Specialist - Manufacturer of transformers, inductors coils and chokes. Custom winding, EMI / RFI Filters, Antenna Windings on ferrite rod, Antenna Winding on phenolic. Any antenna coil designs.

Misek Antenna Research - Publisher of The Beverage Antenna Handbook. Supplier of transformer cores, clips and FET's used in Beverage Antenna construction.

ASC Signal - Global manufacturer of Satellite Earth Station, Air Traffic Control Radar Antenna and High Frequency Antenna products for broadcast, government and enterprise satellite communication applications.

SE Engineering - Manufactures FM antennas, mast ground kits, 75 ohm isolation transformer, for the broadcast industry.

Communication Coil - Communication Coil, Inc. designs and produces custom, high reliability Filter Networks, RF Coils, Chokes, Inductors, Baluns, Toroids and Power Magnetics for communications

Taiyo Yuden - Ceramic capacitors, inductor ferrite products, high frequency dielectric components like chip antenna and filters.

SuperSmith - Program to mechanize Smith Chart operation This graphics-intensive program is a valuable transmission-line calculator for both advanced and beginning users. Based on the venerable and highly intuitive Smith chart, it provides high-accuracy computations without recourse to paper, compass or straightedge.

PExprt - Tool for magnetic component design and modeling. Design and modeling of magnetic components such as inductors, planar transformers and integrated magnetics used in power-electronics applications.

WinPic 2007 - Program bulk erases, reads, writes and verifies PIC10F, PIC12F and PIC18F families. PIC part number selection. Programmnig voltage selection. 2V to 5V/ 0.25V step. Firmware updating.

Increasing Amplifier Relay Speed - Article describes a circuit that accelerates the coil of DC relays by momentarily doubling their voltage.

80-10m Linear Amplifier - High-power 3-500 HF linear amplifier by Don Pinnock G3HVA

High power amplifiers by pass relays  ^updated - These relays are only to be used for output power who exceeds conventional antenna relays specifications.

CDG2000 by OZ9FW - OZ9FW CDG2000 High-end transceiver homebrew project

6L6 Transmitter - 40 meters band 5 watts transmitter, uses a 6L6 with a 6X5 rectifier and a 0D3 voltage regulator tube on the screen.

OZ3QY CDG2000 Transceiver - The CDG2000 is a high performance HF transceiver developed by G3KBB, G3OCQ and G3SBI. They have managed to design a high end transceiver that can compete with the most expensive ones on the market

I0SKK CDG2000 transceiver - CDG2000 is a superb transceiver, mainly designed as a high performance receiver by three G-land OM Colin Horrabin G3SBI; Dave Roberts G8KBB and George Faer G3OGQ.

Home-Brew Regenerative Receiver - Home-Brew Regenerative Receiver and experiments with low voltage operation.

Regenrative Receiver Design - N1TEV high performace regenerative receiver design