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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hello all,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I have to say that I have never had any problems with my SB-650 being
connected to (or removed from) my SB-401/SB-303 combo after proper alignment of
the all the Tx/Rx circuitry on the 401/303 pair. The SB-650 does not go flaky
on 10 or 15 meters nor does it <i>cause </i>the 401/303 to go wacky.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Bear in mind that when using a properly connected SB-650, if you
don’t read that right frequencies on the 10 and 15 meter bands (when connected
to a SB-401/SB-303 pair, for example) it is quite probable that the SB-303 oscillators
(especially the problematic HFO on the SB-303, as Glen mentioned) have to be
tweaked/aligned. The SB-650 may be “correctly” seeing the situation; i.e. that
there is a problem – the HFO dropping out periodically -- which manifests
itself as an improper count/display. But that ‘problem’ is not necessarily being
caused <i>because</i> an SB-650 is being used with an SB-303.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>And remember, there should be an isolating resistor branching off
from each oscillator’s (HFO, LMO and BFO’s) main output connector on the back
of the SB-303 to three spare SB-303 outputs; and from those ports you connect the
other cables that go to the SB-650. Maybe some people are using a “T” directly
from the SB-303 to the transmitter and the SB-650 – that won’t work. [The manual
indicates you must use spare connectors on the SB-303 isolated (to some extent)
by resistors.]<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Having said that, it is true that the SB-303 has a ‘problem’
with the HFO output. The SB-303 should have had an emitter follower (or source
follower) added to drive the cable after terminating the internal oscillator
correctly. But if the SB-650 is showing a haywire reading, that is likely that
it is a problem that will remain with the SB-401/SB-303 pair even when the
SB-650 is removed. When aligning the SB-401/303 pair together (to operated as
a pair)-- but without connecting the SB-650 -- I have found that the SB-303’s HFO
always takes a lot of work on the higher bands (to get it stable). Adding or
removing the SB-650 doesn’t seem to <i>be</i> the problem, or add to it.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Now forgetting about the transmitter for a moment, the other thing
is this: If you are using an SB-303 as just a standalone receiver, it makes no
sense to connect the HFO, LMO and BFO directly to the SB-650 either (as you
might be tempted to do) because the SB-303 must have a 50 ohm dummy load
plugged in to the LMO port to operate as a receiver only in the absence of a transmitter
to load that output. You need to plug in the dummy load to the LMO port, and
branch off prior to that (through resistors) to pare ports, and then to the
SB-650.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Any way you slice it, you can’t connect an SB-650 to an SB-303
without going through those isolating resistors. But when the 401/303 are
aligned and peaked properly, adding an SB-650 properly doesn’t seem to affect
anything negatively.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Anyway – that’s what I have found.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>--- Rob VE3JQL.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> heath-bounces@puck.nether.net
[mailto:heath-bounces@puck.nether.net] <b>On Behalf Of </b>Dave Edwards<br>
<b>Sent:</b> April-24-11 12:15 PM<br>
<b>To:</b> Glen Zook<br>
<b>Cc:</b> heath@puck.nether.net; w9bzn1@gmail.com<br>
<b>Subject:</b> Re: [Heath] Question<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>Thanks Glen! I have a few of each of those model
numbers, but never used the 650 with the 303 on transceive.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>...Dave<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><br>
Sent from my iPad<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
On Apr 24, 2011, at 11:52 AM, Glen Zook <<a href="mailto:gzook@yahoo.com">gzook@yahoo.com</a>>
wrote:<o:p></o:p></p>
</div>
<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
<div>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0>
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<p class=MsoNormal>The tube-type equipment seems to have more output from,
especially, the heterodyne oscillator. I have an SB-650, along with an
SB-303 and SB-401 in right now for a client. When the SB-303 is hooked
to the SB-401 the SB-650 does not read correctly on the 10-meter band and is
flaky on 15-meters. However, when hooked to an SB-301 along with the
SB-401 it reads fine on all bands.<br>
<br>
Now when used with one of the transceivers, since there is not an additional
load on the heterodyne oscillator from the transmitter, it works fine.<br>
<br>
Glen, K9STH<br>
<br>
Website: <a href="http://k9sth.com">http://k9sth.com</a><br>
<br>
--- On <b>Sat, 4/23/11, Dave Edwards <i><<a href="mailto:kd2e@comcast.net">kd2e@comcast.net</a>></i></b>
wrote:<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
From: Dave Edwards <<a href="mailto:kd2e@comcast.net">kd2e@comcast.net</a>><br>
Subject: Re: [Heath] Question<br>
To: "Glen Zook" <<a href="mailto:gzook@yahoo.com">gzook@yahoo.com</a>>,
<a href="mailto:heath@puck.nether.net">heath@puck.nether.net</a>, <a
href="mailto:w9bzn1@gmail.com">w9bzn1@gmail.com</a><br>
Date: Saturday, April 23, 2011, 9:22 PM<o:p></o:p></p>
<div id=yiv1488893272>
<div>
<p class=MsoNormal>Just curious....Why does the SB-650 work better with
...for example, an SB301 than the solid state SB-303?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Does
it have to do with tapping in to the oscillators without pulling them off?</span><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>....Dave</span><o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid black 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>-----
Original Message ----- <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal style='background:#E4E4E4'><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif"'>From:</span></b><span style='font-size:
10.0pt;font-family:"Arial","sans-serif"'> <a
href="/mc/compose?to=gzook@yahoo.com" target="_blank" title="gzook@yahoo.com">Glen
Zook</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>To:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <a
href="mailto:heath@puck.nether.net">heath@puck.nether.net</a> ; <a
href="mailto:w9bzn1@gmail.com">w9bzn1@gmail.com</a> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Sent:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Saturday, April
23, 2011 12:07 PM<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Subject:</span></b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'> Re: [Heath]
Question<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
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<td valign=top style='padding:0in 0in 0in 0in'>
<p class=MsoNormal>Try AADE for a readout.<br>
<br>
The SB-650 actually works better with the tube-type equipment than the
SB-303.<br>
<br>
Glen, K9STH<br>
<br>
Website: <a href="http://k9sth.com">http://k9sth.com</a><br>
<br>
--- On <b>Thu, 4/21/11, william moody <i><<a
href="mailto:w9bzn1@gmail.com">w9bzn1@gmail.com</a>></i></b> wrote:<o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
From: william moody <<a href="mailto:w9bzn1@gmail.com">w9bzn1@gmail.com</a>><br>
Subject: [Heath] Question<br>
To: <a href="mailto:heath@puck.nether.net">heath@puck.nether.net</a><br>
Date: Thursday, April 21, 2011, 9:24 PM<o:p></o:p></p>
<div id=yiv1488893272>
<p class=MsoNormal>I have a question for you gentlemen, I have purchased a
hr1680 and hx1681 and would like to have a digital readout. Is there a such
an device available for this setup made by heath or someone other than
heath that I might turn to.....<br>
I am aware of the sb 650 but I thought it was just for the 303...<br>
Thanks Guys<br>
Bill<o:p></o:p></p>
</div>
<p class=MsoNormal style='margin-bottom:12.0pt'><br>
-----Inline Attachment Follows-----<o:p></o:p></p>
<div>
<p class=MsoNormal>_______________________________________________<br>
Heath mailing list<br>
<a href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a><br>
<a href="https://puck.nether.net/mailman/listinfo/heath">https://puck.nether.net/mailman/listinfo/heath</a><o:p></o:p></p>
</div>
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<div class=MsoNormal align=center style='text-align:center'>
<hr size=2 width="100%" align=center>
</div>
<p class=MsoNormal>_______________________________________________<br>
Heath mailing list<br>
<a href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a><br>
https://puck.nether.net/mailman/listinfo/heath<o:p></o:p></p>
</blockquote>
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<p class=MsoNormal><o:p> </o:p></p>
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