high voltage transformer

Building High Power, High Q, Loading Coils - This page describes the loading coil (inductor) that W8WWV built for my center-loaded 160 meter (1.83 MHz) vertical antenna.

High impedance baluns - Introduction with some background on balun types

Eliminating TX RF Feedback Problems - Malfunction of transceivers due to stray RF pickup is a common problem, especially when using end-fed antennas, high-impedance feedlines, or a poor ground counterpoise

Rhombic Antenna for 30m - 6m - Rhombics are high gain directive wire antennas

Antenna Gain on Trial - Most people think it's a good thing to have and the more the better. However, this is not always true - and the amount of gain is often not what it appears to be. Assuming higher gain is what you need, how do you determine what will give the best performance?

A 2.4 Ghz High gain antenna  ^pop - Here is how to build a high gain antenna for 2.4 gHz wireless networks. Several hams are experimenting with these devices in an effort to build a network. It is sometimes referred to as Hinternet or HSMM.

The FD4 (FD3) Windom Antenna  ^pop - The 4-band Fritzel model FD4 is a special version of a Windom antenna. It is a half-wave long on the lowest frequency, and is fed from a coax cable through a transformer inserted in the wire at one-third from one end

Jacksonville antique radio society - The official newsletter of the jacksonville antique radio society, highlighting jarsclub activities.

Frankford Radio Club - The Frankford Radio Club originated in the Frankford High School, in Philadelphia, around 1927.

Minnesota - Willmar Police & Fire-EMS Scanner Feed - WILLMAR MN KANDIYOHI CO. Police fire EMS highway dept.

LNA Technology - LNA Technology High Performance Low Noise Preamplifiers for Amateur Radio, VHF-UHF weak signal, DX, EME, and commercial applications.

HA1YA Mechanics & Electronics Inc. - Specializes in manufacture of middle and high power RF decks and high quality linear amplifiers with metall ceramic tubes for HF, 6m, 2m and 70 cm bands. Transverters, power supplies and control units

Discovery Power Amplifiers - The Discovery series of amplifiers are designed and built in the UK by Linear Amp UK Ltd, one of the world’s leading amplifier manufacturers, specializing in high power RF tube amplifiers. The amplifiers use large GS31 or GS35 ceramic triode tubes. Band coverage 6m, 2m and 70 cms

Comtechpst.com - High Power RF Amps - Comtech PST offers solid-state power amplifiers in frequency ranges from 1 MHz through 3.6 GHz, with output power levels ranging from 5 watts to over 30 kW

Harbour Industries - Harbour Industries, the worldwide High Temperature and High Performance cable manufacturer, offers a wide range of Mil-Spec and Commercial designs such as NEMA HP3/HP4 and SAE AS22759

Kings Electronics - Manufacture a wide array of RF interconnect products for operation from 0 to 18 GHz, ranging in size from subminiature connectors to large, high voltage types

DEHN, Inc. Surge & Lightning Protection Priority listing - Offering transient voltage surge suppressor, TVSS, patch cables, surge arresters, surge protectors for lightning and power surge protection for electrical equipment, IT networks, communication systems, data lines, relay systems and solid state controllers.

Behringer - High quality audio systems

GIGAVAC Ham Radio Relays - Gigavac is a leading designer, manufacturer, and worldwide seller of contactors and high voltage relays using vacuum, gas filled, and high voltage reed relay technology. hv relay applications information with cross reference charts for kilovac / tyco, jennings, and crydom part numbers.

Low Power Radio and Broadcast Company - Manufacturers of high performance low power am transmitter products: sstran amt3000, bc-100, and the mw-250. for home and professional use.

FDMDV - Digital Voice - FDMDV - Frequency Division Multiplex Digital Voice Digital Audio over HF SSB. FDMDV is the latest digital voice mode on HF - it caters to high quality digital voice under poor band conditions, in only 1100Hz bandwidth

The Noise Floor - The noise floor: 1750 meter lowfer and medfer resource

WA4GEG Repair Service - HamRadioBug.com the new home for Electronic Equipment Service. Yaesu high-end series SSB/CW transceiver repair

A Power Supply on the Cheap - Need a variable power supply that is short circuit protected and over voltage protected; Here is a good one that can be built cheap by VE3IVJ

High Voltage Breakdown Tester - K8CU technical topics article about high voltage breakdown tester necessary for testing of any high voltage components like vacuum tubes, high voltage capacitors, vacuum relay