emi filter

Turkey - TRAC - Telsiz Radyo Amatorleri Cemiyeti

TA7KT Club - Telsiz Radyo Amat¸rleri Cemiyeti Kayseri ?ubesi web sayfas.TURKEY

Portugal - REP - Rede dos Emissores Portugueses

K-Com - comprehensive line of products for rejection of Radio Frequency Interference (RFI) to telephone equipment.

Custom Ham Maps - The webs premier site for custom ham maps (azimuthal equidistant projection maps) and great circle bearing/distant charts for the radio amateur. Customized azimuthal equidistant projection maps and tables.

HD Communications - Rf Connectors,RF Amplifiers,RF Filters,HF cable and accesories. Tower hardware valves and tubes

Kiwa - Filters and performance upgrades for many receivers

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

Soundcard Interfacing - This page is an attempt to correlate the interfacing schemes for various Radio models, and Sound Card configurations.

IARU HST Championships - Official page of the IARU High Speed Telegraphy Championships

Morse Code tutorial - Short reference to morse code

Italian airport frequencies  ^updated - List of italian airport frequencies

All Spectrum Electronics - Hobby kits and electronics, semiconductors, components, batteries, ham radio gear and more

QSL-Shop.com - Premium quality QSL cards, with samples, preview and on-line order

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

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

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

Tunekit - Filter Tuning Kit for Windows is a electronic filter synthesis program and a practical filter tuning aid for actually designing and building a working filter

TVI and BCI Filters - TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.

Lowpass filter for 5MHz - The following lowpass filter was built using the tables in the arrl manual, it is a 5 section one and seems to work ok

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

SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier

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

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