vhf filter

Build a bazooka dipole  ^pop - Build Your Own Bazooka Dipole: A VHF/UHF vertical dipole made from coax

Antenna Transmission Line Power Splitters - Several ways of splitting power to feed two like (50 ohm terminal impedance) antennas.

Copper Cactus J-pole VHF antenna - Copper cactus dual-band super J-pole antenna project for 2 meters and 70 cm

HB 9 CRU:Magnetische Loop-Antennen - Magnetic loop antennas by HB 9 CRU in german

VHF UHF antenna for mobile transceivers - A whip antenna for VHF and UHF handhelds or mobile radios

The M1IOS Wonder Whip Priority listing - A portable HF/VHF/UHF antenna and autotuner featured in "RadCom" June 2006.

CSVHFS Antenna Gain Measurements - The Central States VHF Society has conducted Antenna Gain Measurements since its inception in 1967. Comparisons between commercial and homebrew antennas, between different homebrew designs, and between different commercial designs. Mostly VHF UHF and up antennas.

VHF / UHF Direct Connect Beams Lengths - Here are some lengths and spacings for various direct connect beams.

RSGB GB2RS News casts - Every week the RSGB produces a News Bulletin for Radio Amateurs and Short Wave listeners. They are read live on Sundays (usually) by a team of readers throughout the UK on HF, VHF and above. Listen To The Main News MP3 (G4NJH) or to GB2RS on your iPod

SSB Electronic USA - manufactures and distributes HF, VHF, UHF and SHF equipment covering 10MHz. - 47.0GHz. Our products include: Wireless LAN / WAN Bidirectional Linear Amplifiers, Low Noise Preamplifiers - LNA's, RF Linear Amplifiers, Relays, Transverter Systems, Frequency Translation Systems, Downconverters, Antennas, Parabolic Dishes, Coaxial Cable, Relays, Antenna Switches, Microwave Test equipment, PC controlled Receivers, Microwave Linear Amplifiers including models for Telemetry, Wireless, and CDMA applications.

Opek Tech - Tawainese antenna manufacturer. Multi-Band HF/VHF/UHF Mobile Antennas

Let's talk Meteors - Improve your Grid Totals by W4VHF

DK3XT Meteor scatter, make more miles on VHF - Meteor scatter, gives quick view over meteor scatter and scatter events on vhf, lists email addresses of vhf radio amateurs qrv in meteor scatter

PC4U HF/VHF Mobile amateur station - Describes the author's mobile HF and VHF station setup. PC4U (Mobile) Ham Station HF/V/UHF or via EchoLink PC4U-L

All American - Distributor of electronic components, ull range of semiconductors (active components), including relays, circuit breakers, transistors, diodes, memory devices, microprocessors, microcontrollers, and other integrated cuircuits, as well as passive components, such as capacitors, resistors, inductors, and electromechanical products, including cable, switches, connectors, filters, and sockets.

CQ Shop Ham Radio Store Hong Kong Priority listing - Hong Kong's only full-service amateur radio store. Full line of Amateur Radio and Two-way equipment and accessories from companies such as Yaesu, Icom, Kenwood, Motorola, MFJ, Alinco, Diamond, AOR and many, many more. Knowledgeable staff with many years of experience in the radio business TAX-FREE shopping (no sales, VAT, GAT or other taxes) HF, VHF, UHF transceivers, receivers, walkie-talkies, antennas, antenna tuners, coax and connectors

FreqTweak - FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display for Linux. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra.

GM3WOJ Amplifiers page - HF and VHF amplifiers homebrewed by GM3WOJ

LZ2US Amplifiers - LZ2US offers 3 types amplifiers for the serious VHF/UHF amateur. These amplifiers are very robust and in use by contest groups and EME stations all over the world. Every amplifier is custom made.

VHF linear amplifier pictures - 4CX250B X2 K2RIW style 2m amplifier

PA7TA RF Amplifiers - VHF UHF Amplifiers

144/430 Duplexer - Schematics for a VHF UHF duplexer

Duplexer for VHF and UHF - Duplexer to use two transceivers and one antenna VHF UHF in spanish

A diode-switched band-pass filter - High speed silicn diodes work well as RF switches. This article describes how to use diodes for selecting two or more filters ARRL QST article by W1FB

Band filters by PA9M - Band filters for PA6Z made by PA9M, designed by W3NQN.