Search results

HamCalc is a free collection of calculators for radio amateurs include Antenna ERP calculations, Attenuators, Audio Filter design, Coil Winding, Decibels, Great Circles map and calculator, HF Filters, HF Traps, Metric conversions OP Amps QRA Locator to Latitude/Longitude, Radio Horizon calculator, Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations Download zip By G4VWL

Dowwnload this free windows programs to design Butterworth, Chebyshev, Elliptic (Caur), Bessel, Legendre and Linear Phase low-pass, high-pass, band-Pass, and band-reject filters. Coupled Resonator band-pass filters

A free computer aided design program to help users without special expertise in filter design to create filters using Linear Technology's monolithic filter ICs. With FilterCAD, you can design lowpass, highpass, bandpass and notch filters

Duplexers for dual band radio are usually high pass filter and low pass filter combined in the same box. This circuit is a design within a cost of US$10.

The most flexible and powerful Microwave and RF Filter and Multiplexer Design Software. Download Filpro-student.zip

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

Standard diplexer design is based on singly-terminated Butterworth filters.

ADE Filter Design and analysis is a free for download windows program to design filters

Filter design software. Elsie is an uncommon commercial-grade lumped-element ("L-C") electrical filter design and network analysis program, directed toward the engineer or technician involved in that line of work.

Windipoles is a free passive real time filter simulator. Developed under Visual Studio .NET. No software installation required. Allows design, analysis, optimizations and plots, all graphically.

Electronic filter design software by omicron is the best for developing active filter, passive filter, and digital filter - check out our products and ordering information.

Provide components to the amateur who wants to construct their own gear and to the professional who wants to save money and time in prototyping their circuit design, Filters, HF Amplifiers, Splitter Combiners, VHF Amplifiers, ATV

Active filter design software for windows, AktivFilter 3 for the design of active filters tuned on the opamp type.

Supplier of custom designed, high performance quartz crystal filters for communications receivers and transceivers, for Yaesu Icom Kenwood and Collins radios

Simple inexpensive program that allows L-C filters designed by PCFILT or S/FILSYN which are to be built using air wound inductors and single layer capacitors cut from alumina or duroid substrate materials

This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands. This is a 6-band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands. Stop band reject may be limited by the relay isolation. Worse case isolation is at 28 MHz or 35 dB or better. Relay K3/K8 protects the filter during transmit via the PTT line. A 25-50ms delay must be used between transmit and PTT. Do not rely on your radio to provide adequate delay with out using the PTT. You logging software must be set to allow a delay between PTT and time of 1st transmit. This filter will not work with VOX or QSK keying as you will damage the filter.

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

Free windows comprehensive tool for Finite Impulse Response (FIR) filter design

Leading supplier of low and high frequency electronic filter design products for the design of wireless telecommunications equipment, semiconductors and more

This is an interactive design package for designing analogue (i.e. hardware) filters made of inductors and capacitors (Ls and Cs).

The document is a technical guide on designing RF filters for radio frequency applications. It covers topics such as interference suppression, band-pass filters, and low pass filters, with a focus on filter design and circuit filters.

Alk engineering - filter design software and consulting

Filter design software. A program designed to expedite the design and analysis of lowpass (and highpass) filters with nearest 5% component values. SVCfilter is 32-bit Windows electrical filter design software nicely written to help the radio amateur, technician or engineer design and analyze lumped-element lowpass and highpass filters.

Fill out the form to design a bandpass filter as described in the January 1985 issue of Ham Radio Magazine. These filters are generally limited to frequencies above 200 MHZ because their size is slightly longer than 1/4 wavelength

This is an interactive filter design package, for designing digital filters

Taking the venerable SMK-1 design to 20m and adding an RF amp, audio filter, and a TiCK Keyer ... by Wayne McFee, NB6M

Sometimes we need a little more output filtering than traditional designs offer. Look at a new filter that can give you that extra boost. QST article by W3NQN

A simple project for an effective home made band pass filter, designed for the portable field day usage

How to design narrowband bandpass filters

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

Online calculator, Butterworth Bandstop (Notch) Filter Designer

ScopeIIR: an Infinite Impulse Response (IIR) digital filter design tool for Windows. It designs high-order IIR filters based on analog filter prototypes, and can design lowpass, highpass, bandpass, and bandstop filters.

Desgining crystal filters and find out crystal data by measuring it.

Online high pass filter design page with introduction to high-pass filters by K7MEM

This site is dedicated to design and analysis of micro- and millimeter wave filters from 0.5 to above 100 GHz.

Javascript filter design page with introduction to low pass filters by k7mem

A homemade band pass filter for the 30 meter band based on the original VE7BPO design

Manufacturer of transformers, inductors coils and chokes. Custom winding, EMI / RFI Filters, Antenna Windings on ferrite rod, Antenna Winding on phenolic. Any antenna coil designs.

A numerical optimizer (solver) for LTSpice IV. Uses a fast evolutionary algorithm. You can use EvoSpice to design high efficiency power supplies, audio filters, low noise RF amplifiers and an endless list of other applications

Zeus Radio program is designed specifically for the ZS-1 transceiver and supports all the basic functions (RIT, XIT, SPLIT, Noise Reduction, Auto Notch Filter, etc.) in order to work in the broadcast brought only pleasure. Zeus Radio works also with Hermes, Anan, Afedri, Red Pitaya, HiQSDR, Odyssey, Extio, RTL-SDR, Peaberry, Winradio, SDR-IQ, Afedri

These are QRP rated 3 Pole Butterworth filters based on a design by K4VX, feature simplicity, almost no insertion loss, and reasonable rejection on the other ham bands.

Band filters for PA6Z made by PA9M, designed by W3NQN.

Online Constant - k Lowpass Filter calculator

Butterworth Highpass Filter Designer

2 filter designs a 3-pole and a 5-pole

Couplings Designer for iPhone. Modern advanced filter synthesis using coupling matrix techniques. There's a free LITE version limited to 4th order filters.

Martek Power designs and manufactures a wide of high performance power supplies for various industries. Power supplies AC-DC, DC-AC inverters, DC-DC, EMI Filters

Microprocessor based interface designed receives a signal from a Morse key, processes it, and re-transmits it to the radio. A microprocessor in the circuit is pre-programmed with a proprietary algorithm which makes a number of measurements and adjustments to the less percise human generated code.

A microprocessor based interface designed to go between a standard Morse code key and a radio transmitter. The circuit receives a signal from the key, processes it, and re-transmits it to the radio.

an overview, introduction or tutorial about the basics of electronics filters including the types of filter and the various filter design considerations and parameters