uhf design

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.

Italian Beacons VHF/UHF/SHF - By I5WBE, Enrico - Beacons Manager VHF/UHF/SHF

UHF Associates and WB6ZOD - UHF Associates and the WB6ZOD remote base serve the greater Los Angeles area including Los Angeles, Orange and San Bernardino Counties

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

WinLink 2000 - WinLink 2000 employs Stations World-wide to provide an HF/VHF/UHF digital radio Interface into the Internet Email system for the mobile radio operator. Features include binary and graphic file attachments, APRS position reporting and over 340 downloadable WX products. The mode used is Pactor I and Pactor II.

RM Italy  ^{updated  pop} - RM is an Italian company operating in the radio communication field since 1974, main products are: HF-CB-VHF-UHF-Dual Band Amplifier, Power Supply, DC-DC Converters Antennas and more

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

Hamtronics, Inc. VHF/UHF FM Receivers - A full line of single-channel synthesized and crystal controlled vhf and uhf fm receivers. Great for repeaters, telemetry, and control 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.

Hamtronics, Inc. VHF/UHF Repeaters - A full line of repeaters, modules to build repeaters, and accessories.

GB3DM - Dumbarton District's UHF Repeater in Scotland

QTH.COM Priority listing - QTH.COM by KA9FOX offer classified swap ads for amateur radio and web design along to evoluted web hosting

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.

Yagi Designer  ^pop - Program that produces antenna radiation patterns and graphs for SWR, forward gain, and F/B ratios

QARTest - Italian only contest logging software, designed for the ARI 40-80 contest.

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

PLL2 - 2nd Order phase locked loop design for passive and active circuits. Bode plot, step response, design parameters

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