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<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Only the later ones have the switch in the probe. The earlier
ones use 3 probes like the ones being sold on eBay. The V7A, I believe, is
among the last to use the 3 probe system. I have a bunch of HK VTVMs, going
back to 1950<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Ron K2RP<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> Heath
[mailto:heath-bounces@puck.nether.net] <b>On Behalf Of </b>Jack Crenshaw<br>
<b>Sent:</b> Sunday, March 10, 2019 7:21 AM<br>
<b>To:</b> heath@puck.nether.net<br>
<b>Subject:</b> Re: [Heath] Heathkit VTVM Test Cables<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='margin-bottom:12.0pt'>That's right. There's sort of a
rotary switch built into the probe. Rotate it one way, it's a direct
connection. Rotate it the other way, it's got the 1M resistor in series.
I can't tell you how many V7-A's I've seen on eBay, that are working VTVMs but
without the test leads. Without that special probe, the VTVM is pretty
much worthless.<br>
<br>
As Dave says, you can buy a new probe kit from the link he gave. I bought
one, and it's a very nice kit.<br>
<br>
Jack<o:p></o:p></p>
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<p class=MsoNormal>On 3/10/2019 3:20 AM, James R Hain wrote:<o:p></o:p></p>
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<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'>
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<p class=MsoNormal>DC test lead has a 1meg resister. <o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>Jim<o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal>On Sat, Mar 9, 2019, 4:11 PM Dave Edwards <<a
href="mailto:kd2e@comcast.net">kd2e@comcast.net</a>> wrote:<o:p></o:p></p>
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margin-left:4.8pt;margin-right:0in'>
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<p>There is a guy making them on ebay, if interested;<o:p></o:p></p>
<p><o:p> </o:p></p>
<p><a
href="https://www.ebay.com/itm/Heathkit-New-Test-Leads-for-the-V-4-V-5-V-6-V-7-or-the-V-7A-VTVMs/254154799517?hash=item3b2cce799d:g:~d8AAOSwPQBbcdRL"
target="_blank">https://www.ebay.com/itm/Heathkit-New-Test-Leads-for-the-V-4-V-5-V-6-V-7-or-the-V-7A-VTVMs/254154799517?hash=item3b2cce799d:g:~d8AAOSwPQBbcdRL</a><o:p></o:p></p>
<p><o:p> </o:p></p>
<p>....Dave<o:p></o:p></p>
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<p class=MsoNormal>On 3/9/19 2:36 PM, Richard wrote:<o:p></o:p></p>
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<blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'
id="m_3395895968890222289mid_c9a7ce18_1f9e_2182_76ca_06f25092e4e5_gmail_com">
<p class=MsoNormal style='margin-bottom:12.0pt'>I have Heathkit VTVM's that
need new test cables. The cable for the IM-18 has the special phone plug and
the AC and DC test wires with the AC-DC switch are both shielded within the
same shield. Is it necessary to shield either or both of these test leads? It
might make sense to shield the AC lead. <br>
<br>
I also have a V7-A that has the three input connectors. It came with test leads
that are probably not original. In this case the DC test lead is shielded and
the AC test lead is not shielded. Same question here. Is it necessary to shield
either or both test leads? <br>
<br>
I need to make new test leads for both meters. <br>
<br>
My Fluke 179 does not have shielded test leads and works just fine. <br>
<br>
What am I missing? <br>
<br>
<br>
Richard KC9UB <br>
<br>
<br>
<br>
_______________________________________________ <br>
Heath mailing list <br>
<a href="mailto:Heath@puck.nether.net" target="_blank">Heath@puck.nether.net</a>
<br>
<a href="https://puck.nether.net/mailman/listinfo/heath" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a>
<o:p></o:p></p>
</blockquote>
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<p class=MsoNormal>_______________________________________________<br>
Heath mailing list<br>
<a href="mailto:Heath@puck.nether.net" target="_blank">Heath@puck.nether.net</a><br>
<a href="https://puck.nether.net/mailman/listinfo/heath" target="_blank">https://puck.nether.net/mailman/listinfo/heath</a><o:p></o:p></p>
</blockquote>
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<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre><pre>Heath mailing list<o:p></o:p></pre><pre><a
href="mailto:Heath@puck.nether.net">Heath@puck.nether.net</a><o:p></o:p></pre><pre><a
href="https://puck.nether.net/mailman/listinfo/heath">https://puck.nether.net/mailman/listinfo/heath</a><o:p></o:p></pre></blockquote>
<p class=MsoNormal><br>
<br>
<o:p></o:p></p>
<pre>-- <o:p></o:p></pre><pre>Keep it simple<o:p></o:p></pre></div>
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