FILTERS / FILTROS
- Helical Resonator Dimensions
- Crystal Filters Types
- 10 MHz SSB Ladder X-tal Filter
- 3.58 MHz CW Ladder Filter - N2DCH
- Variable Bandwidth X-tal Filter - G3UUR
- Variable Quartz Filter
- 4.43 MHz SSB Filter
- 27 MHz - 40 MHz Lumped Component Diplexer
- 430 MHz to 780 MHz Tunable Filter
- 88 MHz - 108 MHz Notch Filter
- Notch-Filter using Coax Cable
- Variable Bandwidth X-tal Filter - LA7MI
- HF Butterworth BPF - IK4AUY
- HF Front-End LPF/HPF - IK4AUY
- 9 MHz Ladder Crystal Filter
- One Crystal CW/SSB Filter - DL7HG
- Variable 600 Hz - 1 kHz Crystal Filter - DL2TM
- 4 MHz Active Crystal Filter - DJ1RL
- Diplexer IF-amplifier - OE3HKL
- Various Ladder Crystal Filters - S54S
- 1.3 GHz / 2.4 GHz / 3.4 GHz BPF - DL3NQ
- 1296 MHz BPF - DC0DA
- 144 MHz High-Q High-Power BPF
- 1296 MHz Interdigital BPF
- Loop Filter Options for PLLs - DB1NV
- 9 MHz IF Notch Filter
- 455 kHz IF with Mechanical Filter
- Symmetrical Bandwidth Ladder Crystal Filters - DK4SX
- Ladder Filter with Overtone Crystals - DJ6EV
- 4.43MHz Neutralized Ladder X-tal Filter -K6OLG
- Stubs as Resonators
- 1296 MHz Cavity Band Pass Filter - N6CA
- 1540 MHz Interdigital Filter
- Roofing Crystal Filter
- 2nd Order RC All-Pass Filters
- Phase Relations in Polyphase Networks
- 9 MHz CW Roofing Filter - PA3AKE
- 9 MHz SSB Roofing Filter - PA3AKE
- 10 GHz Band Pass Filter - W1VT
- Helical Filter Calculation
- Narrow-Band LC Matching Networks Calculation
- 1300 MHz Cavity Band Pass Filter - N6CA
- 2304 MHz Cavity Band Pass Filter - N6CA
- Three-Post Two-Sections Cavity Filters - W1GHz
- 3.58 MHz Buterworth SSB X-tal Filter - W7ZOI
- 1013 MHz, 2MHz-BW Cavity Filter
- Dual Ladder Filter for SSB - N2DCH
- No-Tuned Circuits X-tal Filter
- 4.43 MHz 9-poles SSB Filter
- HF BPF and LPF Filters
- 1 GHz Zero-Order-Resonators Band Pass Filter
- 144 MHz - 432 MHz Diplexer