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CW morse code decoder - HAM radio software
http://www.dxsoft.com/en/products/cwget/
Burst filter with "100 LPM" setup means that a threshold is about one half of "dot" length at 100 LPM (20 WPM). You can use CwGet as narrow-band sound DSP-filter also. So CwGet can help you to decode Morse code "by ears". The bandwidth of a sound filter is selected by the "Filters > Sound Output" menu.
Audio CW Filter - PARA
https://www.para.org.ph/docs/CW-Audio-Filter.pdf
audio cw filters in use, technical articles on audio filtering, published audio cw filter circuit designs and filter computer software. My idea was an external audio cw filter which I could switch In and Out like I would do if I had a internal cw filter fitted in the transceiver and I found that I had the choice of
CW Audio Filter – Rob's Blog
https://robs-blog.net/2015/12/15/cw-audio-filter/
CW Audio Filter. When it comes to direct conversion receivers, to get good selectivity you need to use good audio filters. There is no IF so you cannot use narrow crystal or collins type mechanical filters to narrow up the bandpass and filter out all those close by signals. For CW use this is important, because you might have 20 different ...
CW filter – uBitx
http://ubitx.net/category/hardware/cw-filter/
Up until now audio filters have largely been adopted by members: either active filters with operational amplifiers or DSP filters with microcontrollers. Karl-Heinz acknowledges that these options represent easy solutions for integration into the µBITx. Karl-Heinz has a CW transceiver HB-1B from Youkit. This transceiver has a quartz filter of ...
A very simple and very effective passive CW audio filter
http://ki3u.byethost3.com/Radio-PhysicsDIR/ecomDIR/Simple_passive_CW-filter/Simple%20passive%20CW%20audio%20filter.html
audio voltage when the filter is in use. a-d.) back off on the volume. Insert the CW filter into the audio output line, keeping the AC Voltmeter connected across the line at the INPUT side of the filter. With the filter's bandwidth wide open retune the receiver for maximum loudness as indicated by the AC Voltmeter.
CW Skimmer - DX Atlas: Amateur Radio software
http://www.dxatlas.com/CwSkimmer/
CW Skimmer can be used with the SDR-1000 and Flex-5000 radios via a virtual audio cable. Sound card: a stereo sound card that supports the 48 kHz sampling rate or higher and has a …
CW Decoder (free) download Windows version
https://en.freedownloadmanager.org/Windows-PC/CW-Decoder-FREE.html
CW Decoder 3.66 is available as a free download on our software library. Our built-in antivirus scanned this download and rated it as 100% safe. This free software was originally created by Grant Connell, WD6CNF. The program's installer is commonly called cw decoder.exe or CWDecoderXP.exe etc. The most popular versions of the tool are 3.6 and 2.8.
A HIGH PERFORMANCE CW LISTENING STATION using free …
http://qrqcwnet.ning.com/forum/topics/a-high-performance-cw-listening-station-using-free-software
The 3rd VST PLUGIN is an PARAMETRIC EQ FILTER, set to add some audio "polishing". This is a very adjustable filter with many features. In this instance we are using a PEAK filter, and two "notch" filters, before and after the PEAK. The next VST PLUGIN - is a CW PITCH READER application, to allow us to see where the MFreqShifter is set
A Passive LC Audio Filter For Amateur Radio Use
http://www.genebitsystems.com/david/AudioFilter/A_Passive_LC_Audio_Filter.pdf
Perhaps the most popular of his audio filter designs is his high-performance passive CW filter. He has published several variations of this design over the years but the basic filter performance has not significantly changed. Thousands of these filters have been built; their scarcity in the used marketplace is a testament to their desirability.
CW audio filter circuits | QRZ Forums
https://forums.qrz.com/index.php?threads/cw-audio-filter-circuits.420146/
OTOH my TS-950SD has 250 and 500 Hz crystal filters in both IF's and then using the built in audio filter to kill wide band receiver hiss as well as "slope tune" plus notch and peak has pulled many a pee weak DX signal out of the noise on 160. Check with Inrad for a CW filter or join an Argonaut forum. Carl. KM1H, Jan 13, 2014.
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