filter design

Antenna Basics - Article designed to answer basic questions about antennas

Helix Antenna - Design helix antennas with this DOS program by OH0NC

J-pole Design Prg  ^pop - J-pole Design Program V1.1 by WA2ISE

VHF-UHF Portable Yagi-Uda - VHF-UHF portable Yagi-Uda antenna design and construction notes by XE1MEX

DXCluster IOTA spots - Live IOTA spots by the dxsummit dx cluster

PE1PKU Peter - technics, radio astronomy, great links, duplex filter

N4UJW Ham Help Site - Learn how to be a ham. Info for becoming a ham.Antenna design and more!

Everything RF - everything RF is a web portal for RF & Microwave Engineers providing News, Design Articles, Information on new products and a component search engine which helps you find the RF & Microwave Components that are right for you.

Fractus Antennas - Fractal Antennas are a new generation of multiband antennas for wireless communications. Based on a new design concept, fractal technology.

Fractal Antenna Systems - Solution to your OEM needs and can meet your design or vended antenna requirements for antennas from 400MHz to 10 GHz.

ZCG Scalar - Designers and manufacturers of radio Frequency antennas. HF - 3000 MHz TET Emtron HF Yagis, Antennas for Wireless applications, Marine antennas, Land mobile, Mobile antennas.

ATV De ik1hgi - Projects and design atv de ik1hgi Progetti, circuits, master, fotos in Italian

Yagi-Uda - Design and optimize Yagi antennas. Ol GW Basic program for dos.

Ariel 30 - HF wire antenna design program by WB4ZYA for DOS

Discone Antenna Design - Discone antenna deisgn program by K5DKZ

Antenna Log Periodic Design - Log periodic antenna design excel sheet file download, in italian.

Magnetic Loop Designer - Magnetic Loop Antenna Design software by DK1NB

Finite difference program - This software is able to calculate the properties of odd shaped transmission lines. Particularly good in valve amplifier design, for aiding the design of transmission line resonators.

WINRLC - Simple freeware tool to calculate several kinds of HF filters. Use to calculate L-C and R-C band filters and bandpasses, L-C, L-R and R-C highpasses and lowpasses, coils and capacitors.

DSPFilter - MM Hamsoft  ^pop - Freeware DSP filter by JE3HHT

Frequency Filer - Frequency Filer is database program designed for people who use a great many different radio frequencies. It is primarily intended for amateur radio operators, short-wave listening enthusiasts and scanner users. The program makes it easy to keep all of your important frequency information in one place, displayed in a logical format to facilitate easy retrieval. Frequency information can be displayed as a list and can be viewed on a world globe. Other features include easy data backup and custom field names. Included is database import utility that can be used as a general file conversion utility. The globe display can also be used as general geographic aid for countries, cities, states, rivers, and lakes. You may even find your home town. Windows Shareware

Winlog 32  ^pop - Logging software designed solely for Windows 95/98/ME/NT4/2000. The Author G0CUZ provides this software free to use by all Radio Amateurs and SWL's in true Ham Spirit.

IZ8BLY Stream - Stream is a software that implements MFSK16 and MFSK8 modes designed by me and Murray Greenman ZL1BPU. It also offers a series of experimental modes based on FEC, interleaving and several modulation techniques (PSK, QPSK, MSK).

7 MHz SSB Transceiver  ^pop - Circuit diagram and discription of 7 MHz Ham Radio SSB Transceiver. Transceiver using two MC1496, 4.43 MHz Ladder filter, LM386, LM324 and IRF840 in final.

Ham Radio Circuits  ^pop - Circuits of SSB Transceiver, AM DSB Transmitter, Antennas, BFO, VFO, 807, FM Mike, Crystal filter and more.