emi filter

K7AR Mobile Cluster - Mobile dx cluster, allow filtering for HF and K WE dx spots only, WWV and DX spots search form.

K5MDX Magnolia DX Association - Mississippi's Premiere DX Organization

PAR Electronics Inc. - Filters for the commercial 2 way market, MATV, FM broadcast, laboratory, marine industry, amateur radio, scanner and short wave. Antenna for amateur radio bands

Response Microwave, Inc. - Microwave Signal Processing Components and Subsystems, from design to manufacturing.

NorComm Data Signaling - Sequential Decoders, DTMF, voice encryption, notch filters and band pass filters, single tone burst decoders.

Communication Coil - Communication Coil, Inc. designs and produces custom, high reliability Filter Networks, RF Coils, Chokes, Inductors, Baluns, Toroids and Power Magnetics for communications

Radio Bygoned - Radio Bygones is the leading quality magazine for vintage radio enthusiasts.

IC7000BKT Icom IC-7000 CAT Control - CAT Control specific for Icom IC-7000 allows managing filters and all the commands of the RTX. Includes a function to synchronize and manage all the memories of the IC-7000.

Remote Controlled TS-2000 Amateur Radio - K2gxt is the rochester institute of technology's (rit) amateur radio club, allow TS-2000 remote control via ham radio deluxe and skype

QST: Ten-Tec Jupiter review - AA1GW review of the Ten-Tec Jupiter HF transceiver published on QST June 2001

Ten-Tec Jupiter 538 Repair - Low-pass filter relay and reverse polarity repair notes by VE7TK

Yaesu FT-950 Operating Manual - Yaesu FT-950 manual

GAP Titan DX SWR Measurements - Gap Titan DX Antenna SWR Tests GAP Titan DX Antenna SWR Test

Jameco - Jameco carries over 50,000 semiconductors, passives, interconnects, electromechanical, power supplies, LEDs and other popular electronic component

Kits and Parts dot Com - Supplying Toroids, Electronic Parts and Kits to Engineers, Schools and Hobbyists. Capacitos, filters, inductors, qrp products

Windipoles - Windipoles is a free passive filter simulator. It is a Windows .NET executable, so no software installation is required. It enables design, analysis, optimizations and plots, all graphically.

Low Pass Audio Filter - 440 Hertz peaked low pass audio filter experiments

Resonant Frequency Calculator - This web based application will compute circuit values required for an L-C circuit to resonate at given frequency. Also it will compute the resonant frequency if given values for L and C.

Low-Pass Active Filter Designer - Javascript filter design page with introduction to low pass filters by k7mem

High-Pass Filter Design - Online high pass filter design page with introduction to high-pass filters by K7MEM

Bandpass and I.F. Filters - On this page a popcorn highpass filter, some inductors and their Q , double tuned bandpass filters and simple Cohn Crystal ladder IF filters are presented.

W3LPL Receiving Bandpass Filters - Project of receive only filters optimized for minimal loss and very high rejection of frequencies below 75% of the filter center frequency by K1TTT

High Pass Filters - Understand how high pass filters are done

Using Band-Pass Filters - Clean Up Your Signals with Band-Pass Filters

M3 Electronix Semiconductor Analyzer Kit - A workbench instrument capable of testing transistors, diodes, FETs, usefull constructing QRP circuitry.