band pass filter
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Antennas : Tuners- Semi-automatic antenna tuner project
- Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands)
[ Hits: 291 | Votes: 0 | Rating: 0 ]
- VA6AM Contesting Accessories
- Custom built high and low power power band pass Filters, low band triplexers, triplexers and diplexers
[ Hits: 118 | Votes: 0 | Rating: 0 ]
- Bandpass Filter Calculator
- Passive Bandpass Filter online calculator and filter formulas. Active Inverting Op Amp Bandpass Filters, Active Noninverting Op Amp Bandpass Filter, just enter the Low ir High Cutoff Frequency
[ Hits: 157 | Votes: 3 | Rating: 5.33 ]
- 20m 30m 40m Bandpass Filters
- Homemade LC Bandpass Filters for 20M, 30M, 40M In multi-station environments like special events, field day, portable operating, is very important to protect receivers from excessively strong signals. Bandpass filters help to protect your transceivers.
[ Hits: 376 | Votes: 1 | Rating: 10 ]
- Band Pass Filters for HF Transceivers
- If your multiple transceiver station is suffering of intrastation interference, this handy and inexpensive band pass filters and help you. QST article Sept 1988
[ Hits: 127 | Votes: 0 | Rating: 0 ]
- A compact 5 bands remote switchable BPF
- These band filters are based on 3 or 5 sections Butterworth band pass filters, maintaining 50 Ohm impedance, and when built around toroidal inductors, can be made very compact.
[ Hits: 221 | Votes: 0 | Rating: 0 ]
- Enhancing Frontend Performance with Optimized Band Pass Filters
- This article explores the nuanced design challenges of Band Pass Filters (BPF) in radio receivers, balancing low insertion loss, high stop band rejection, and narrow bandwidth. The focus is on the "Series-Trap, Shunt-C" topology, resonator count impact, and meticulous layout design for superior stop band performance across various frequency bands
[ Hits: 82 | Votes: 0 | Rating: 0 ]
- 17 meter QRP Transmitter
- 1-watt 17-meter cw transmitter that was originally done about 10 years ago as a club project for RAMS, the Radio Amateur Megacycle Society. It uses a VXO, rather novel at the time. It also uses a bandpass filter at the output rather than the usual lowpass
[ Hits: 122 | Votes: 0 | Rating: 0 ]
- Transverter for 50 70 28 MHz
- This multiband transverter project features power output at 13,8V 50MHz 15W, 70MHz 10W, second harmonic <65dBc. Single N connector of antenna, suitable for a dual band Yagi. Article include Block Diagram for Dual Transverter and low pass filters
[ Hits: 151 | Votes: 1 | Rating: 10 ]
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