813 linear

Petlowany Antennas by K6NO - WorldRadio Article on Petlowany antennas base on this principle: if a length of wire is wound into a spiral-shaped coil and excited by a radio frequency current connected to the innermost portion of the coil, it will then, and only then, exhibit RF characteristics that closely approximate those of a resonant linear wire of the same length

160 meter linear loaded Inverted L antenna - The total length of the inverted L is 240 feet, which is 7/16th of a wave length long. It has a 92 foot horizontal linear load section 1 foot above ground that terminates into a home-brewed parallel network tuner by KN4LF

The Cycloid Collinear, a CP Omni - This paper describes a wide band, high gain, multi-element cp omni with a single 50 ohm feedpoint with instructions for building a 2 and half element cycloid collinear for 2 meters.

VHF Collinear-Dipole - 2 m. Band VHF Collinear with 2 Dipoles by sv1bsx

2.4GHz Colliner Antenna Design - Antenna for 802.11 applications

Linear Loaded mobile antenna - A vertical linear loaded antenna for 2 meters band in italian

BiQuad Antenna for 144/440 - This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4.15dbi of gain by KE4UYP

VHF/UHF Folded Diplole - This is a two element colinear design for vertically polarized radiation. It may be constructed for use on either 2m or 70cm

The HO Collinear, a Horizontal Omni - The HO Collinear is a 4 element horizontally polarized omni for two meters

WiFI Collinear antenna - Pictures and homebrew instructions for this collinear 2.4 Ghz antenna

Emtron - HF Linear amplifiers and power supplies manufacturer

Sandpiper Aerial Technology LTD - Sandpiper has been designing and manufacturing aerials for over 25 years. Offer HF Dipoles and verticals, VHF UHF Yagi, collinears and other beam antennas, elical antennas,quagi,moxon, and portable antennas, tripods mounts and fiberglass poles

Juma kits - Ham radio kits, HF receivers,ssb and cw transceivers, morse keyers and linear amplifiers.

Sights and Sounds of Digital Signals - Preview the waterfall signature of various digital signals and listen to the sound of the digital modes. Learn about the bandwidth requirements and why a linear transmitter path is critical to successful and correct use of many modes on the amateur bands by W1HKJ

QRO-Parts.com - Svetlana tubes also Russian capacitors,vacuum and coaxial relay, for RF Power Linear Amplifier builders. Amateur-Radio, Broadcast. Full Online Catalog.

Cupeles Electronics LLC - Two way radio communication services for Kenwood Icom Yaesu radio and ameritron drake cliperton henry heathkit amp yaesu kenwood linear amplifiers based in Harrisburg, PA by WB3M

FilterCAD - A free computer aided design program to help users without special expertise in filter design to create filters using Linear Technology's monolithic filter ICs. With FilterCAD, you can design lowpass, highpass, bandpass and notch filters

AADE Filter Design - Freeware windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters

Covert a Zetagi Amplifier for 50 Mhz - Schematics and instruction to convert a ZetaGi CB linear amplifier to 50 mhz band

Amplifier for 15 and 17 meter band - The two linear amplifiers are ment for use with QRP SSB/CW/FM/AM transmitters on the amateur bands 15 and 17 meters can be powered from a 12 volt DC supply by ON6MU

50 Mhz solid state 600W amplifier - G3WZT John Matthews project of a 600 Watt solid state linear amplifier for the 6 meters band

A 20W Amplifier for 2 meters - VU2RAR basic VHF power amplifier suitable for 144-146 Mhz output power can vary from 3 to 25 Watts.

50 Mhz Amplifier - This is a homebrew 100 watt six meter linear amplifier. The project was designed by Pat Bunn - N4LTA, and was featured in the October 1990 issue QST magazine.

HV power supplies - WV0NNI 2,800 VDC @ 2 Amps Continuous Variac adjusts filament voltage. A voltage doubler circuit, well suited for smaller, compact linear amplifiers.

Intermodulation - Intermodulation distortion, commonly known as Intermods, is a type of interference that can occur in any non-linear junction.