band pass73 links
Antennas : 40M : 40 meter Loop Antennas
- Receiving antenna for low bands
- K9AY loop antenna installed at PA6Z Contest group. This is a receiving antennas for the low bands (160m, 80m and 40m). Include schematics and info on a building the control box, preamplifier and low-pass filter
[ Hits: 19073 | Votes: 10 | Rating: 8.4 ]
- Maria Maluca Antenna by PY2BBP
- The Maria Maluca HF multiband antenna as designed in 1957 by PY2BBP is a directive antenna for 15 meter and a passive element that works as director and reflector in different bands
[ Hits: 200 | Votes: 0 | Rating: 0 ]
- Broadband receiving antenna matching
- This article addresses the subject of obtaining the best signal transfer from an antenna to the
typical 50-ohm receiver input over a wide frequency range, with emphasis on medium-wave
(500 - 2000 kHz), encompassing the standard AM broadcast band and the 160-m amateur band.
[ Hits: 6305 | Votes: 4 | Rating: 6 ]
- DCI Digital Communications
- Band pass filters, for radio frequency interference problems.
[ Hits: 584 | Votes: 0 | Rating: 0 ]
- ON4AOI Automatic Band Decoder
- Automaticaly select the correct antenna and bandpass filter, by ON4AOI
[ Hits: 1370 | Votes: 4 | Rating: 7.25 ]
- Array Solutions - WX0B
- Stacking and phasing HF and 6m arrays antenna switches and contesting devices. Custom low band antenna arrays, bandpass filters,commercial/Mil STd filters,microwave components, commercial broadcast filters.
[ Hits: 5624 | Votes: 10 | Rating: 6.2 ]
- Dunestar Systems
- Manufacturer of single band and multiband transceiver bandpass filters for HF. High pass filters, two radoi headphones mix and switch, 6 meter portable antenna, antenna remote switching and steering.
[ Hits: 1420 | Votes: 2 | Rating: 1 ]
- SuperPass Company Inc.
- Antenna manufactuer, Panel antennas, sector panel antennas, high gain for ISM, MMDS, PCS, GSM, CDMA, TDMA, 400MHz, 900MHz,1.9GHz, 2.4GHz, 2.7GHz, 3.5GHz,5.8GHz. Broadband wireless applications for ISP,ASP.
[ Hits: 1915 | Votes: 4 | Rating: 5.5 ]
- PROCOM Antennas
- Manufacturer of communications antennas, bandpass filters, RF combiners, receiver multicouplers, diplexers, duplexers, RF connectors, RF circulators, RF isolators, RF couplers and SWR meters
[ Hits: 5510 | Votes: 7 | Rating: 6 ]
- Heros Technology Ltd
- HF Radio Preselectors,BCB filters,Low Pass filters,Band Pass filter
[ Hits: 564 | Votes: 2 | Rating: 10 ]
- A graphics-intensive bandpass filter program based on the helical resonator.
[ Hits: 1817 | Votes: 2 | Rating: 9 ]
- CW Skimmer
- Multi-channel CW decoder and analyzer
for Windows XP/7/8/10. Simulatneously decode ALL cw signals in the receiver passband - up to 700 signals can be decoded in parallel and extract call sign
[ Hits: 6999 | Votes: 8 | Rating: 4.88 ]
- Free programmable DSP-Filter
- Free programmable LOW/HIGH/BANDPASS FIR filter in the audio range 0-4kHz
[ Hits: 29744 | Votes: 84 | Rating: 5.83 ]
- 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: 6100 | Votes: 15 | Rating: 8.26 ]
- 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: 4744 | Votes: 2 | Rating: 10 ]
- DOS Freeware, DSPBOX is an attempt to code the Texas Instruments DSK 'C50 in such a way
to make it behave like a commercial DSP noise reduction unit, like the
NIR-12, the TimeWave 599+ and others. Not only the noise reduction function
has been implemented, but automatic notch, AGC and Band Pass have as well.
[ Hits: 2351 | Votes: 0 | Rating: 0 ]
- This program expedites the design of lumped-element diplexers using both the lowpass/highpass and the bandpass/bandstop topologies.
[ Hits: 1425 | Votes: 5 | Rating: 4.6 ]
- 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: 2105 | Votes: 1 | Rating: 10 ]
- Hombrewing an HF Transceiver
- This page will describe the construction of a multi band SSB transceiver with all its components Band Pass Filter, Oscillator/Modulator unit, RX/TX Mixer TX Amp I.F. Amplifier AGC VFO Driver amplifier Receive audio amplifier Final amplifier Low pass filter Digital display and VFO stabiliser
[ Hits: 4351 | Votes: 6 | Rating: 8.33 ]
- TVI and BCI Filters
- TVI and BCI bandpass and bandstop filters in SMD technique. Schematics and images.
[ Hits: 4250 | Votes: 6 | Rating: 5 ]
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