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That's right....been so long I've had one of those in front of me. <br>
I do remember it had to be flipped when operating the monobander SSB
rigs vs. the Sugar Baker and Hot Water rigs...<br>
....Dave<br>
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<div class="moz-cite-prefix">On 4/23/2013 3:10 PM, Glen Zook wrote:<br>
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<div><span>None of the HP-23- series of power supplies has a
switch for "bias"! The HP-23 and HP-23A have fixed bias and
a variable bias. The HP-23B, HP-23C, and the PS-23 have
only fixed bias. The HP-23A and HP-23B have a toggle switch
to switch between 250 VDC and 300 VDC. The HP-23, HP-23C,
and PS-23 require an internal connection to determine if the
lower B+ is 250 VDC or 300 VDC.</span></div>
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<div>Glen, K9STH<br>
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<div>Website: <a class="moz-txt-link-freetext" href="http://k9sth.com">http://k9sth.com</a><br>
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<hr size="1"> <font face="Arial" size="2"> <b><span
style="font-weight:bold;">From:</span></b> Dave
Edwards <a class="moz-txt-link-rfc2396E" href="mailto:kd2e@comcast.net"><kd2e@comcast.net></a><br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:heath@puck.nether.net">heath@puck.nether.net</a> <br>
<b><span style="font-weight: bold;">Sent:</span></b>
Tuesday, April 23, 2013 10:18 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
Re: [Heath] SB-110A<br>
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<div> Some of the old Heathkit HP23's had a toggle
switch on it to switch bias voltage. ...Not sure if
it was the 23 or 23A.<br>
Newer ones did not, and had to be hard wired. <br>
Just make sure you have the right setting for your
rig.</div>
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