design uhf antennas

AM Antennas  ^pop - The ultimate AM loop antenna article. It is the only article that includes the calculations and detailed plans

Cubical Quad Antenna Design  ^pop - By N6VNG, can be used to determine the element lengths and the gamma match values for different frequencies, includes link to excel files with formulas to dimension your quad antenna.

1270Mhz Yagi Antenna - Build your own antenna for the 23cm band ( 1250Mhz - 1280Mc ) using some aluminium and this simple design.

M1KTA Antennas W3EDP - Notes on W3EDP Antenna by M1KTA

F6CRP Denis Priority listing - Site devoted to weak signal traffic SSB/CW V/UHF meteor Scatter,tropo, aurora, fai, ES homebrew

Mr coily  ^updated - Base and mobile antennas,custom ball mounts, single, double, triple coil antennas, flat coils.

Spi-Ro Manufacturing Inc - Transmitting & receiving multi-band antennas covering 1.8 thru 55 Mhz.

Wellbrook Communications - Broadband active loop antennas for radio amateurs and hobbyists

Palomar Engineers - RFI Kit, ferrite cores, baluns, loop antennas, antenna tuners and various accessories

Broadcast microwave services - Designs and manufactures a comprehensive line of microwave communications equipment for television broadcast, video, telemetry, and electronic surveillance applications.

Radio Adventures - Design and manufacturing of electronic components, kits, and accessories for the amateur and commercial communications. CMOS Keyers, W1AW receivers, PC borads kits

Bird Electronic - Design and manufacture of components, instruments and systems for RF power measurement.

Intek - CB radios, VHF transceivers, scanners antennas and accessories

Diamond Antenna  ^pop - Base station and repeater antennas, mobile antennas, ,multi-band HF antennas , handheld transceivers, receiving and scanner antennas, power meters, swr meters, power supplies, coaxial switches

GB3DM - Dumbarton District's UHF Repeater in Scotland

Scaning The Utilities - Hf, vhf, and uhf utility listening, police frequencies, shuttle, aero, usaf callsigns and many other services

PolarPlot - Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating. With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.

Spectran - Program designed to do spectral analysis and real-time audio filtering on reception of audio signals for EME, VLF, SETI applications. Offer support for MTHELL, QRSS, DFCW, NDB, WSJT by I2PHD

Int. Morse Code program information - This program is designed to help the beginner learn to receive and send the International Morse Code.

TTYlink - TTYLink is a freeware client chat telnet application designed for packet radio and available for Windows NT 4.0 and Windows 95/98.

Amplifier Simulation Program - ASP 4.0 - Design weak signal GaAs FET or bipolar PreAmps. Automatically designs for optimum gain, NF, VSWR or all.

KM5KG network designer - Windows98 Program for RF Design

Multi-fax Priority listing - Weather demodulator software, cards and antennas.

KI5YN QLF Filter - The QLF filter is a microprocessor based interface designed to go between a standard Morse code key and a radio transmitter

Field strenght meter - Simple to build with a very clear instruction set, useful to check the radiated power of your antennas