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Crystal band pass filters for QRSS applications
- A good RX band pass filter will be an important feature of any future design
post 13 Feb 2025
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5th order High Pass VHF Filter
Sometimes many VHF-UHF modern tranceivers have problems with Broadcast Interference and Cross modulation from FM commercial broadcast stations
5 bands remote switchable BPF
These band filters are based on 3 or 5 sections Butterworth band pass filters, maintaining 50 Ohm impedance
50 MHZ low pass filter
This very heavy duty 50 MHz Low Pass Filter was constructed by using a pair of 50 pF, 15 kVDC ceramic doorknob capacitors, and three air wound self supporting coils
How to make a coax notch or bandpass filter
a sharp notch filter for an unwanted frequency band
Simple band pass filter for 23cm
a 3-pole and a 5-pole, which one you use depends on how selective you want the filter to be, and the insertion loss to be tolerated
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Sometimes many VHF-UHF modern tranceivers have problems with Broadcast Interference and Cross modulation from FM commercial broadcast stations
These band filters are based on 3 or 5 sections Butterworth band pass filters, maintaining 50 Ohm impedance
This very heavy duty 50 MHz Low Pass Filter was constructed by using a pair of 50 pF, 15 kVDC ceramic doorknob capacitors, and three air wound self supporting coils
a sharp notch filter for an unwanted frequency band
a 3-pole and a 5-pole, which one you use depends on how selective you want the filter to be, and the insertion loss to be tolerated
PSION Greyline Clock PSION Greyline Clock v. 1.0 is a UTC/Local clock showing sunlight/darkness area on the world map
Radioassistance Radioassistance E Kenwood Dealer, vendita ricetrasmittenti, antenne, parti di ricambio, elettronica
SunCalc SunCalc - sunrise, sunset, shadow length, solar eclipse, sun position, sun phase, sun height, sun calculator, sun movement, map, sunlight phases, elevation, Photovoltaic