dc power supply

Vertical antenna for 160 meter - This high antenna require a large ground composed by 40 radials. It's not very handy expecially in windy situations but is very powerfull in pile-ups. In italian

DCTL Portable Antenna - A Low -Power, Distributed Capacitance Twisted Loop , indoor portable HF antenna by Monty Northrup, N5ESE

Circularly-Polarized FM Broadcast Antenna - A Circularly-Polarized Commercial-Style FM Broadcast Antenna

Stacking Yagis - Stacking principles, with homebrew coax- and power-splitters by DK7ZB

WAEDC-Contest - WAEDC contest page

DARC IARU-Region-1-Fieldday

WAE-DX-Contest - The Deutscher Amateur Radio Club (DARC) invites radio amateurs world wide to participate in the annual WAE-DX-Contest. CW SSB and RTTY Contests

Italian Castles Award DCI - With the purpose to let people know about the Castles built on the italian territory and the value which the historical architectural estates hold. Diploma Castelli Italiani by IQ1BP.

RF Amplifiers - Solid State and TWT Amplifiers From 1 MHz to 40 GHz with Power Levels from .1 mil Watt to 2.5 Kw

RF HAMDESIGN - An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.

Amidon Inc. - Ferrite Toroids. Iron Powder Toroids. Ferrite Beads. Split Cores. Cable clamp-ons. Balun Cores. W2FMI Baluns and Ununs. Inductive components for EMI Suppression and RFI Suppresion, power supplies, HAM radio.

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.

Econco - Leader in providing power vacuum tubes. A subsidiary of CPI

Penta Laboratories - Penta Laboratories is a Manufacturer and Distributor of vacuum tubes, capacitors and electron tubes for Broadcast, Industrial, Marine and Avionics applications worldwide.

BURLE Industries - Power tubes, high voltage power supplies

BEIJING ELJVT - Sell the China made electron tubes over a long period of time, the vacuum tubes/electron valves/Power tubes/Audio Tubes/Thyratrons/Magnetrons and accessories, the tube sockets, the vacuum capacitors, high voltage ceramic capacitors, aluminum electrolytic capacitor.

Meter Mate - SWR Graph Software - Meter Mate is a companion utility for your directional watt meter that allows you to calculate the SWR reading when the forward and reflected power readings are measured. In addition to calculating the antenna system SWR Meter Mate will also plot the SWR curves of all of your antennas onto graphs that may be printed out.

Proplab-Pro - An ionospheric laboratory for your personal computer. Wquipped with one of the most powerful ray-tracing engines capable of handling such things as Ionospheric Tilts Chordal Hops Non-Great-Circle Propagation Spitzes and more

QSL Card Imaging - A database which allows the user to store and catalog QSL cards

LA7MI 40W RF Amplifier for 80m - 40W Linear Power amplifier with FETs for 80m Some notes about saturation in ferrite- and iron-cores. Written by LA7MI Stein Torp, N-5005 Bergen

A 20m monoband Power Amp - The 20m monoband 4-1000 amplifier, by Jelmer (pa5r), Herman (pa0ten) and Frans (pa5ca)

432 MHz Power amp - by RA3YCR

YU1AW 2m PA - GI-7B, GS-31B & GS-35B power amps, 144 MHz QRO

50 MHz GS35b Power Amplifier - OZ1DPR six meter power amplifier using the russian VHF triode GS35b

Soundcard Audio Tools and Toys - Soundcard audio tools and toys, experimental ideas and utilities. Signal Generator, Frequency-counter / instrument-tuner, Real-time Spectrum Analyser