vtvm test lead

[Malcolm Leonard]

The probes are on page 1468 in Mouser catalog 622.
There are two stock numbers.The black one is 17PR122. The red one one is 
17PR121.
They cost $1.23 each.
The proper phone plugs are  military  surplus type PL55.
Try Fair Radio Sales or Surplus Sales of Nebraska for those.
Hosefelt Electronics has the RG58/AU by the foot at 14 cents per foot.
If you put that resistor inside the vtvm case you defeat the whole design 
purpose and philosophy of the Heath engineers and limit the usefulness of 
your vtvm.
Malcolm Leonard


----- Original Message ----- 
From: "Hank Kryger" <hankr at centurytel.net>
To: "Malcolm Leonard" <radiorepair at MINDSPRING.COM>
Sent: Saturday, May 14, 2005 5:58 PM
Subject: Re: vtvm test lead


> Hi Jack
> Have been following the discussions reference the VTVM probe.  I need to 
> build a probe myself and looked in the Mouser catalog  for the  correct 
> hollow probe.  I  am not certain which probe in the catalog is the correct 
> one.  Could you send me a stock number or some guidance on how to identify 
> the correct probe.  Prefer to build a new probe over modifying the VTVM 
> internally.
> Thanks  Hank  WA9QJH
>
> On 02, May 2005, at 23:57, Malcolm Leonard wrote:
>
>> For ordinary (not  RF demodulator)you can use two home brew probes.One 
>> contains a  1Meg resistor at its tip.It is used for dc only.The second 
>> probe has nothing at the tip.Use it for AC and ohms.
>>
>> Mouser sells the correct hollow probes that will accept RG58/AU cable.Do 
>> **not** use RG58 without the "AU" designation.Much too stiff to use on 
>> the bench.
>>
>> Phone jacks need to be ruggedized military PL55 types to get the proper 
>> spacing between tip and body to avoid arcing.Fair Radio Sales and Surplus 
>> Sales of Nebraska used to sell these military types;probably still do.
>> Malcolm Leonard
>> ----- Original Message ----- From: "Jack Schrader" <w1jhs at MIDMAINE.COM>
>> To: <HEATH at LISTSERV.TEMPE.GOV>
>> Sent: Monday, May 02, 2005 10:50 AM
>> Subject: [HEATH-TEMPE] vtvm test lead
>>
>>
>> Thanks for reading this note.
>>
>> I recently purchased a Heath IM-13 without the test lead. Anyone in radio 
>> land have a test lead they would like to sell. In particular one that 
>> could be used for rf with the switch in it and a 1/4 " phono plug on one 
>> end.
>>
>> Thanks Jack
>>
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> 

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Products bought, sold or traded here is the responsibility of the
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for losses or misrepresentations of any kind.  Buyer beware!

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