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Dick Rollema wrote:
<blockquote TYPE=CITE><b><font size=+0>To All from PA0SE</font></b>
<p><b><font size=+0>The following is part of an e-mail I received from
Murray, ZL1BPU.</font></b>
<p><b><font size=+0>73, Dick, PA0SE</font></b>
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<blockquote type=cite class=cite cite><font size=+0>I have just about completed
the design of an LF Exciter using a</font>
<br><font size=+0>microcontroller. It is very simple (all the compexity
is in the micro), and</font>
<br><font size=+0>yet it offers very high performance on the LF bands.
The synthesizer uses</font>
<br><font size=+0>software DDS and a step size of 84 mHz (1/3 the JASON
step). It operates</font>
<br><font size=+0>ASK, FSK, DFCW, FELDHELL and MT-HELL, and I am at present
testing it with</font>
<br><font size=+0>JASON. It has a built-in beacon which also operates all
these modes and has</font>
<br><font size=+0>a 120 character message. The output is about 1W from
10 kHz to 250 kHz, and</font>
<br><font size=+0>it operates from 0 to 400 kHz.</font>
<p><font size=+0>73,</font>
<p><font size=+0>Murray ZL1BPU</font></blockquote>
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