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HP 412AR Leads

 

I picked up a HP 412 AR and the leads were cut off. Where can I find replacements, or build them.
 

On 11/8/21 11:24 AM, JIM Rogers via groups.io wrote:
I picked up a HP 412 AR and the leads were cut off. Where can I find replacements, or build them.
The 412AR dates back to well over half a century ago; you will not likely find "HP 412AR leads". Your best bet is to get some nice silicone-insulated wire and quality alligator clips and build a set of leads.

Decent silicone wire, amazingly from China, can be had via Amazon. Look at the "BNTECHGO" brand; I've been very pleased with them. (and I'm a quality snob)

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
Bob Albert
 

It's not that simple.? The leads are coaxial cables with terminations such that four wire resistance can be done.? The manual shows it but you will need some special cable.

Bob

On Monday, November 8, 2021, 08:28:31 AM PST, Dave McGuire <mcguire@...> wrote:


On 11/8/21 11:24 AM, JIM Rogers via groups.io wrote:
> I picked up a HP 412 AR and the leads were cut off. Where can I find
> replacements, or build them.

? The 412AR dates back to well over half a century ago; you will not
likely find "HP 412AR leads".? Your best bet is to get some nice
silicone-insulated wire and quality alligator clips and build a set of
leads.

? Decent silicone wire, amazingly from China, can be had via Amazon.
Look at the "BNTECHGO" brand; I've been very pleased with them. (and I'm
a quality snob)

? ? ? ? ? ? ? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
 

Are they actually coaxial on the 412?? Wow, I didn't realize that. I stand corrected.

So, ok, the OP will need to get some coaxial cable rather than single-conductor silicone probe wire.

-Dave

On 11/8/21 11:53 AM, Bob Albert via groups.io wrote:
It's not that simple.? The leads are coaxial cables with terminations such that four wire resistance can be done.? The manual shows it but you will need some special cable.
Bob
On Monday, November 8, 2021, 08:28:31 AM PST, Dave McGuire <mcguire@...> wrote:
On 11/8/21 11:24 AM, JIM Rogers via groups.io wrote:
> I picked up a HP 412 AR and the leads were cut off. Where can I find
> replacements, or build them.
? The 412AR dates back to well over half a century ago; you will not
likely find "HP 412AR leads".? Your best bet is to get some nice
silicone-insulated wire and quality alligator clips and build a set of
leads.
? Decent silicone wire, amazingly from China, can be had via Amazon.
Look at the "BNTECHGO" brand; I've been very pleased with them. (and I'm
a quality snob)
? ? ? ? ? ? ? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
--
Dave McGuire, AK4HZ
New Kensington, PA
 


second photo shows that BNCs can be fit into the holes for the fixed leads....

Might be a nice practical improvement.

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