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<p><font face="Helvetica, Arial, sans-serif">Hello,<br>
<br>
Apologies for not getting back to this sooner.<br>
<br>
I'm using an OZ2CPU clone wattmeter. This is a QRP meter that
will handle up to 1W input barefoot, it uses the AD8307 Log
Amplifier.<br>
<br>
It does have a "SSB PEP" mode. My Penelope has transformer T2
in the correct orientation.<br>
<br>
Since my original question, I have done some more
experimenting. I have set each bands PA gain to 38.8 dB. At
this level I am finding that a Tune Power Level of 10 gives me
100mW out up to 50 with 500mW out (within 2%).<br>
<br>
SSB voice peaks from Penelope are 250-260 mW with my Mic Gain
set to 6dB. When I turn Compression on, I can make the peak
levels rise into the 300-350 mW region while not exceeding 0dB
on the Compression meter. I am using a Shure SM48 Microphone
with a single transistor amplifier PCB salvaged from an old
Philips FM900 microphone. This amplifier is powered by the
Electret bias voltage from Penelope.<br>
<br>
I can easily get my 400W PEP output (from 160m-12m) from my
Codan 4404 amplifier with these settings by adjusting the
amplifiers internal gain and ALC trimpots. I set Tune Power to
around 3-4 which then gives me 50-60 Watts of tune out of the
amplifier in the High Power setting.<br>
<br>
The amplifier has a High, Medium and Low Power setting. Medium
is 80W PEP and Low is 10W. I have to be careful with carrier
modes (like AM) as the Codan 4404 will dutifully output a 400W
AM carrier (which is it NOT rated to do and it gets quite hot
VERY quickly, it is most certainly a SSB amplifier).<br>
<br>
At this stage I am happy with how it's working. I have also
just added a relay to terminate the RX line from the 4404 Amp to
Mercury into 50 Ohm when transmitting. There is not enough
isolation in the 4404 TX/RX relay. I get ADC Overload on
PowerSDR flashing on voice peaks while transmitting. I don't
want to kill my Mercury board! :-)<br>
<br>
73<br>
<br>
Michael.<br>
VK5LN/VK5ZEA<br>
</font></p>
<div class="moz-cite-prefix">On 11/08/2020 3:18 pm, Helmut Oeller
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:000001d66fa3$03db3ba0$0b91b2e0$@freenet.de">
<pre class="moz-quote-pre" wrap="">Hi Michael,
what kind of meter you are using to measure PEP power? Seems that your meter
can't indicate PEP. Recall 500mW carrier or PEP are equal 2 x 125 mW
2-tone-carriers.
I've no doubt that your Penelope is working fine.
73, Helmut, DC6NY
-----Ursprüngliche Nachricht-----
Von: Hpsdr [<a class="moz-txt-link-freetext" href="mailto:hpsdr-bounces@lists.openhpsdr.org">mailto:hpsdr-bounces@lists.openhpsdr.org</a>] Im Auftrag von Michael
Carey
Gesendet: Dienstag, 11. August 2020 06:16
An: <a class="moz-txt-link-abbreviated" href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</a>
Betreff: [hpsdr] Penelope power output
***** High Performance Software Defined Radio Discussion List *****
</pre>
</blockquote>
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