pi filter

50MHz Moxon Rectangle - N3ox 6 meter moxon rectangle, pictures and assembly notes

HB9ABX Felix - Ham Station description of HB9ABX and CE3CWF, magnetic loop antenna details, Free Energy devices, Pictures from Switzerland and Chile.

Magnetic Loop antenna  ^pop - Why is an Magnetic Loop antenna so special, this antenna is picking only the magnetic part of the elektro magnetic radio wave. The big advantage of this antenna is that the electric interference from the big city have no influence on the received signal

LF/VLF Portable Loop Antenna - The octoloop antenna is a length of 25 pair telephone wire inside an octagonal loop shield of 3/4 hard copper pipe

21 DT 163 Roger - SSTV, pictures, home brew from sweden

Alpha Yankee SSTV - Welcome to the Web page of Alpha Yankee SSTV by 14AY03 and 14AY04,many pictures,links of pages and softwares...

T6PSE online log - Afghanistan 2011 dx pedition online log

Radio Amateur Relief Expeditions - Radio amateurs helping orphanages, hospitals and schools in Romania and Russia

W3MF John - General information page including contest scores, station pictures

Pirate-radio links - links to pirate radio stations dx

Gisela Dierking NF/HF-Technik Germany - Many interessting accessories, like unversal audiofilter, Mixer interface for sound card, highvoltage powersupply,accessories for 706, hamradio vacation, and more

I5XWW Crispino Kits - Ham Radio Kits, soundcard interface for digimodes, usb CAT Interfaces, PA interface cables, connectors, DRM hardware and software, DRM converters

Industrial Communication Engineers - RF parts, filters, rf switching products.

ATV de Ik8UIF - Pratical Atv projects, Atv Qso pictures... and more

About Sunspot cycles - Theory to explain solar cycles variability proposed by Jean-Pierre Desmoulins

DX Radio - FM dx logs, MW carrier offset monitoring, lists of RDS codes in use in the UK, London pirate bandscan and much more from a London QTH.

ADDX programs schedule - List of transmissions compiled and updated by Andreas Volk, you can choose the language among a large choice. Website is in german.

QSO Manager - HF QSO/QSL/Award managment, ADIF Import/Export, full version free to everybody. Requires Access 97 or Access 2000 (with JPEG and TIFF filter installed), screen resolution 800x600/1024x768

Free programmable DSP-Filter  ^pop - Free programmable LOW/HIGH/BANDPASS FIR filter in the audio range 0-4kHz

AGW Packet Driver - SV2AGW packet radio driver, runs TCP/IP protocol over radio, support windows 95/98/NT and several devices like baycom and, E5DXL 9600 G3RUH compatible modems, DRSI and Sound cards by SV2AGW George Rossopoulos.

RemIcom-B - Freeware RemIcom-B is a very simple ICOM remote program. Display of current frequency, mode and filter ITU HF Band assignment (ITU Region 1, 2 and 3 selectable) HAM HF Band usage analog frequency band display

Mode J Desense Filter - This type of filter can be used in a Mode J satellite station (uplink on 2m, downlink on 70cm) to reduce the problem of the uplink signal desensing the receiver

K6XX Amateur Radio articles - An assortment of Amateur Radio-related technical articles written for the JUG, the newsletter of the Northern California Contest Club. Topics include unique but simple and useful radio modifications and accessories, and rig reviews.

Toroid Pro - Designed by microwave engineers to provide filter, radio,microwave and Ham radio engineers with all relevant information of an inductor and core at his or her finger tips

Homebrew radio receiver  ^pop - Detailed plans of my homebrew receiver. Frequency coverage is from below 300kHz to 30MHz. Pictures, schematics, board layouts, parts lists and more can be found here.