high voltage transformer

Ionic Liquid Antenna - Ionic Fluid Antenna By Brian Perrett, MW0GKX, from original articles by David Hatch, N9ZRT.

10m Band 2 Element Loop - 2 elements horizontal high gain loop for 10 meter band

Zippiro antenna for 40 Meters - Very compact and high efficiency antenna ,very low radiation angle even at low height.

10el 50MHz Low Noise LFA Yagi - A high gain LFA 10 element LFA Yagi with super clean pattern and flat SWR no matching required so easy to build.

6 elements LFA antenna for 6 meters - A high-gain 6 element LFA Yagi with a 7.3 metre boom for 50MHz

High gain vertical antenna for UHF - How to build a high gain vertical antenna for the UHF amateur or CB Bands, by radio experimenters handbook

VSWR Loss Calculator - This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors

EME stackable 9el 144MHz LFA Yagi - High Gain Low Noise 9el 144MHZ LFA Yagi. Flat SWR and no matching required. Very low temperature see lowest Ta on VE7BQH list ofr this size!

W4UA High Point Amateur Radio Club - Web site for the High Point Amateur Radio Club, serving High Point, NC and surrounding area communities.

Indiana Area Live Scanner - Scanner Covers Analog & Digital Law Enforcement/Fire/EMS/EMA/Schools/Utilities/Municipal/Highway Maintenance & Forestry Communications In Perry & Spencer Counties In Indiana & Hancock County In Kentucky

HAM TV - Ham Radio TV Events, Communication & Electronics History Webcast With High Speed Internet And Windows Media Player

Megawave - MegaWave Corporation's goal is to provide services and products of the highest quality to its many customers in the areas of antenna design and development, and radiowave propagation.

HST 2010 Poland - 7th IARU Region 1 High Speed Telegraphy Championship, 5-9th October 2010 Skierniewice Poland

Radiowave Propagation Center - High frequecy and VHF radio propagation data, solar and geomagnetic real-time and historic data, sunspot activity reports, as well as forecasts. A comprehensive propagation resource compiled by Tomas Hood, editor of the propagation columns of CQ, CQ VHF, Popular Communications, and Monitoring Times magazines.

TS50-High-Power-Mod - With that small modification you'll get a Trim-Pot and the TS-50 is able to run up to 180 W output by DK0WFC

Ontario Police LIVE Streaming Audio - Live streaming audio of Ontario Police Department. Super clean receive and high quality audio supporting up to 300 listeners.

Simple beacon construction notes - Here is a simple, self-contained beacon which can run a few milliwatts or as much as a watt depending on choice of amplifier and supply voltage.

Fitting a PL259 to a coaxial cable. - Fitting a plug to thin, 6mm, coaxial cable will require a PL-259 either made for the small diameter cable

High-Pass Filter Design - Online high pass filter design page with introduction to high-pass filters by K7MEM

Bandpass and I.F. Filters - On this page a popcorn highpass filter, some inductors and their Q , double tuned bandpass filters and simple Cohn Crystal ladder IF filters are presented.

W3LPL Receiving Bandpass Filters - Project of receive only filters optimized for minimal loss and very high rejection of frequencies below 75% of the filter center frequency by K1TTT

High Pass Filters - Understand how high pass filters are done

Universal frequency counter & voltage meter - to be used with QRP transceivers

An universal power supply for rigs - VU3NSH article on high current universal supply for rigs

High current power supply for rigs - High current universal supply for rigs, project article by VU3NSH