November 2020 Blog Posts (5)

new QRQ CW KEYBOARD - In your Browser - plus, IAMBIC PADDLES & Straight Key

go to keyer.elf.org

Added by Chuck aa0hw on November 30, 2020 at 10:08am — No Comments

Wireless CW Keyer - 40 khz LF Band TX/RX - using 2 High Q Ferrite Bobbin Core Inductor Coil Antennas

wireless transmission from the CW KEYER - keying a 555 at 40 Khz - to a wireless LF RF BAND software receiver - demod'N the 40 Khz CW Keyer LF BAND transmitter's CW

the TX and RX antenna are using a high Q , series/parallel resonated FERRITE BOBBIN CORE INDUCTOR COIL - @2mH each - series and parallel resonating capacitors…

Continue

Added by Chuck aa0hw on November 24, 2020 at 3:58pm — 1 Comment

CW Copy By Ear Practice - 22 separate signals from 20 wpm to 90 wpm - use your SDR APP to pick which one

22 individual CW software KEYBOARDs are sending a CW text file from 500 hertz up to 11Khz

separated individually by 500 hertz from one signal to another

to pick a CW SPEED/signal that you would like to copy by ear - use your SDR

- here is a quick example of doing that here with a…

Continue

Added by Chuck aa0hw on November 20, 2020 at 3:19pm — 2 Comments

classic R-C exponential envelope VS Raised Cosine for QRQ CW - Listen and Vote - which do you prefer

60 wpm test - classic R-C exponential envelope VS Raised Cosine - for copying by ear - which do you prefer ?

NOTE: to get the RAISED COSINE edges from YPlog, its RISE/FALL time was set to zero and sent through this simple Gstreamer CW AUDIO BANDPASS filter…

Continue

Added by Chuck aa0hw on November 18, 2020 at 11:00am — No Comments

Send QRQ CW using a LINUX CW KEYBOARD that appears on your WINDOWS 10 PC in Real Time at Near Zero Latency

uses a remote RASPBERRY PI 4 that hosts the LINUX CW KEYBOARD from AD5DZ - RECRI KEYER - https://github.com/recri/keyer using SSH -X on windows to bring up the PI4 CW KEYBOARD on the WINDOWS 10 DESKTOP (uses REALvnc to attach the connections from the CW KEYBOARD MIDI…

Continue

Added by Chuck aa0hw on November 1, 2020 at 5:30pm — No Comments

Monthly Archives

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

© 2021   Created by Chuck aa0hw.   Powered by

Badges  |  Report an Issue  |  Terms of Service