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<p>Amen to everything Glen says below....<br>
</p>
<br>
<div class="moz-cite-prefix">On 5/31/2018 10:24 AM, Glen Zook via
Heath wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1195844279.7456247.1527787486065@mail.yahoo.com">
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font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande,
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<div id="yui_3_16_0_ym19_1_1527786896145_6515"><span
id="yui_3_16_0_ym19_1_1527786896145_6516">No "O" ring on the
mechanism that turns the LMO in any of the Heath SB-Line
equipment. The friction ring sits so that there is one
portion on each side of the inner ring of the dial. This is
adjusted by moving the assembly up, or down, on the inner
ring. The adjustment is correct when the dial can be turned
through a full 360-degrees without slipping or binding.</span></div>
<div id="yui_3_16_0_ym19_1_1527786896145_6515"><span><br>
</span></div>
<div id="yui_3_16_0_ym19_1_1527786896145_6515"><span><br>
</span></div>
<div id="yui_3_16_0_ym19_1_1527786896145_6515"><span
id="yui_3_16_0_ym19_1_1527786896145_6656">It sounds like
someone tried to use an "O" ring to provide friction instead
of properly aligning the drive.</span></div>
<div id="yui_3_16_0_ym19_1_1527786896145_6514"> </div>
<div id="yui_3_16_0_ym19_1_1527786896145_6514"><br>
</div>
<div class="signature" id="yui_3_16_0_ym19_1_1527786896145_6513">Glen,
K9STH </div>
<div class="signature" id="yui_3_16_0_ym19_1_1527786896145_6513"><br>
</div>
<div class="signature" id="yui_3_16_0_ym19_1_1527786896145_6513">Website:
<a class="moz-txt-link-freetext" href="http://k9sth.net">http://k9sth.net</a></div>
<div class="qtdSeparateBR"
id="yui_3_16_0_ym19_1_1527786896145_6460"><br>
<br>
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id="yui_3_16_0_ym19_1_1527786896145_6464" style="display:
block;">
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id="yui_3_16_0_ym19_1_1527786896145_6463">
<div style="font-family: HelveticaNeue, Helvetica Neue,
Helvetica, Arial, Lucida Grande, sans-serif; font-size:
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<hr id="yui_3_16_0_ym19_1_1527786896145_6511" size="1">
<b><span style="font-weight:bold;">From:</span></b>
Rich Sahlender <a class="moz-txt-link-rfc2396E" href="mailto:wa3wlh@comcast.net"><wa3wlh@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>
Thursday, May 31, 2018 11:33 AM<br>
<b><span style="font-weight: bold;">Subject:</span></b>
[Heath] SB102 Main Tuning Knob And Friction Wheel<br>
</font> </div>
<div class="y_msg_container"
id="yui_3_16_0_ym19_1_1527786896145_6509"><br>
Hopefully the following will make sense to those of you
familiar with<br>
the SB102 VFO and the curious "friction?" method used by
the main tuning<br>
knob to actually tune the VFO.<br>
<br>
I acquired a SB102 on which the VFO main tuning knob was
spinning without<br>
moving the VFO. The old ragedy manual that was provided
with it is useless<br>
as the pages related to how the mechanism works are
badly worn and / or<br>
missing. So until I can get a usable copy of the manual
I am winging it.<br>
<br>
I pulled off the main tuning knob and found that the
"friction?" wheel on<br>
the stud that the knob installs on was not making
contact with the<br>
"ring?" on the VFO mechanism itself. Curious design.
Anyway it looks<br>
like there are remains of an old disintegrated o-ring
originally on that<br>
wheel. Is there supposed to be such a ring to provide
the friction with<br>
the VFO?<br>
<br>
The two "plates?" that make up the friction wheel are
snug but not so<br>
much that they cannot simply be pushed down onto the
ring attached to<br>
the VFO mechanism so that the ring slips in between the
two plates. So I<br>
went ahead and did that and it now tunes the VFO just
fine but... should<br>
it be left this way to operate or should I be looking
for an<br>
appropriately sized o-ring to slip on the wheel to
provide friction with<br>
the ring in the VFO mechanism?<br>
<br>
<br>
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</pre>
</blockquote>
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