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<html>
<head>
<META name="description"
content="w9cf Amateur Radio Links and some Java Applets" >
<META name="keywords" content="sbdvp,amateur radio,antenna tuner,gr821a,
transmission line equation,voice keyer,Schroedinger equation,
Schrodinger equation">
<title>w9cf links</title>
</head>
<body text="#000000" bgcolor="#FFFFFF">
<h1><a href="mailto:[email protected]">W9CF</a> Links</h1>
<h2>Some free software including source code</h2>
<ul>
<li> <a href=https://github.com/w9cf/cwsim>
CW simulator in python. This is mostly a clone of Morse Runner.</a>
<li> <a href=https://github.com/trlinux/trlinux>
TR log for linux</a>
<li> <a href="tran/index.html">
Transmission Line Equation Applet</a>
<li> <a href="morse/morse.html">A Simple text to morse converter</a>
<li> <a href="sbdvp/src/sbdvp103.zip">
Download SBDVP</a> Sound Card Voice Keyer for
<a href="http://www.qth.com/tr"> TRlog</a>. This is version 1.03 for
versions of TR after 6.65. It's recommended to use trlinux above instead.
You must use the -c command line flag to force compatibility with
TR versions 6.65 and before.
<ul>
<li><a href="sbdvp/index.html">Preview the user manual</a>
<li><a href="sbdvp/sbdvp_and_ct_or_na.html">Why it probably doesn't
work with CT or NA</a>
</ul>
<li> <a href="gr821a/gr821.html">General Radio GR821 Applet</a>
to convert and correct dial readings
<li> <a href="yagipub/index.html">Yagi Antenna Modeling Applet</a>
<li> <a href="equiv/index.html">Equivalent diameter of Rectangular Cross
Section Conductor applet</a>
<li> <a href="tuner/tuner.html">T-Network Tuner Simulator Applet</a>
</ul>
<h2>Notes and articles related to electronics</h2>
<ul>
<li>
Notes on writing udev rules for identifying two different TS-590SG
rigs connected to the same computer
Download pdf file
<a href="notes/ts590sg/udev/ts590sg_udev.pdf">PDF file</a>
<li>
Notes on adding auxiliary outputs to the YCCC SO2R Mini
Download pdf file
<a href="articles/so2rmini/auxiliary_output.pdf">PDF file</a>
<li>
Single-op two-radio (SO2R) notes. Download
<a href="so2r/so2r.pdf">PDF file</a>
<li>
Notes on designing a high-power 20m bandstop filter.
Download
<a href="articles/bandstop20m.pdf">PDF file</a>
<li>
Notes on the operation of the MFJ-1025/MFJ-1026 noise canceling signal
enhancer. Download
<a href="mfj1025/mfj1025_notes.pdf">PDF file</a>
<li> <a href="articles/ultimatic/ultimatic.html">
An ultimatic adapter for iambic keyers</a> or Download
<a href="articles/ultimatic.pdf">PDF file</a>
<li> <a href="articles/click/index.html">
Spectral Analysis of a CW Keying Pulse
</a>
or Download
<a href="articles/click.pdf">PDF file</a>
<li> <a href="articles/tuner/index.html">
Estimating T-network losses at 80 and 160 meters
</a>
or Download
<a href="articles/tuner.pdf">PDF file</a>
<li> <a href="skin/index.html">
Some notes on the skin depth
</a>
<li> <a href="articles/phase/index.html">
Phase-Shift Network Analysis and Optimization
</a>
or Download
<a href="articles/phase.pdf">PDF file</a>
<li> <a href="articles/mutual/index.html">
Simplified Mutual Impedance of Nonplanar Skew Dipoles
</a>
<li> <a href="articles/square/index.html">
Notes on the characteristic impedance of coax with a square outer conductor
</a>
or Download
<a href="articles/square.pdf">PDF file</a>
<li> <a href="articles/magic/index.html">
A Less than Magic Bullet
</a>
or Download
<a href="articles/magic.pdf">PDF file</a>
<br> Roy Lewallen called a network that could drive two antennas with
equal currents 90
degrees out of phase, independent of the type of antennas,
a magic bullet. This is a demonstration that such a network
is nonreciprocal.
<li> <a href="articles/balun/index.html">
Putting a Balun and Tuner Together</a>
or Download
<a href="articles/balun.pdf">PDF file</a>
<li> <a href="articles/equiv/index.html">
Approximate R.F. Resistance of Rectangular Cross Section Conductors</a>
or Download
<a href="articles/equiv.pdf">PDF file</a>
<li> <a href="articles/conform/index.html">
Analytic expressions for the equivalent diameters of rectangular cross
section conductors </a>
or Download
<a href="articles/conf.pdf">PDF file</a>
<br>
Here is an <a href="articles/update/index.html"> update with references </a>
showing my results for the equivalent
diameters were not new, or download <a href="articles/update/update.pdf">
PDF file</a>
<br>
<li>
Notes on using the Hendricks SOTA end-fed half-wave tuner --
<a href="rev/sota.pdf">Download PDF file</a>
</ul>