[Heath] Heathkit VTVM Test Cables

[Jack Crenshaw]

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.

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.

Jack

On 3/10/2019 3:20 AM, James R Hain wrote:
> DC test lead has a 1meg resister.
>
> Jim
>
> On Sat, Mar 9, 2019, 4:11 PM Dave Edwards <kd2e at comcast.net 
> <mailto:kd2e at comcast.net>> wrote:
>
>     There is a guy making them on ebay, if interested;
>
>
>     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
>
>
>     ....Dave
>
>     On 3/9/19 2:36 PM, Richard wrote:
>>     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.
>>
>>     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?
>>
>>     I need to make new test leads for both meters.
>>
>>     My Fluke 179 does not have shielded test leads and works just fine.
>>
>>     What am I missing?
>>
>>
>>     Richard KC9UB
>>
>>
>>
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-- 
Keep it simple

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