about pass filter on dxzone.com
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- Radio Filters.Com
- Low Cost FM Notch Filters: Radio Filters.com, manufactures frequency control products including band pass, notch, reject, electronic filters
[ Hits: 650 | Votes: 6 | Rating: 6.83 ]
- DCI Digital Communications
- Band pass filters, for radio frequency interference problems.
[ Hits: 440 | Votes: 0 | Rating: 0.00 ]
- ON4AOI Automatic Band Decoder
- Automaticaly select the correct antenna and bandpass filter, by ON4AOI
[ Hits: 1091 | Votes: 4 | Rating: 7.25 ]
Software : DSP
- 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.
[ Hits: 4851 | Votes: 12 | Rating: 5.83 ]
- SVC Filter
- 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.
[ Hits: 987 | Votes: 1 | Rating: 10.00 ]
- A graphics-intensive bandpass filter program based on the helical resonator.
[ Hits: 1476 | Votes: 2 | Rating: 9.00 ]
Technical Reference : Filters
- Free programmable DSP-Filter
- Free programmable LOW/HIGH/BANDPASS FIR filter in the audio range 0-4kHz
[ Hits: 26130 | Votes: 77 | Rating: 5.80 ]
- Freeware real time DSP filter particularly for applications of amateur radios , IIR, FIR filter, low-pass, high-pass, band-pass filter, band suppressor (notch filter) individually adjustable
[ Hits: 5144 | Votes: 14 | Rating: 8.14 ]
- WD6CNF DSP Filter
- Audio Digital Filter, two bandpass filters, three notch filters, two noise filters
graphical setting of filter center frequency and bandwidth Drag vertical lines on top of signal,
Microphone input, speaker output
Mono, 5 kHz bandwidth
[ Hits: 4441 | Votes: 2 | Rating: 10.00 ]
Technical Reference : HF Radios Technical Reference : Radio Frequency Interference
- TVI and BCI Filters
- TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.
[ Hits: 3839 | Votes: 4 | Rating: 5.00 ]
- 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
[ Hits: 170 | Votes: 1 | Rating: 6.00 ]
- A low pass filter circuit
- A simple 7 element, Chebyshev low pass filter, rolls of at 30MHz. Attenuation is better than -40dB at 60MHz, -65dB at 90MHz, -80dB at 120MHz.
[ Hits: 4161 | Votes: 12 | Rating: 5.83 ]
- A diode-switched band-pass filter
- High speed silicn diodes work well as RF switches. This article describes how to use diodes for selecting two or more filters ARRL QST article by W1FB
[ Hits: 1260 | Votes: 1 | Rating: 10.00 ]
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