[Heath] T-4 Probe or T-4 Probe Fabrication

[Kenneth G. Gordon]

On 10 Jan 2013 at 8:47, Ron wrote:

> You can easily and cheaply make two probes -- one straight through
> (for audio tracing) and the other with a series diode in it (for RF).
> You'll have to mount a jack (say, 1/4" phone or BNC) in the hole
> through which the probe cable originally went.
> 
> -- Ron

Yes. I have made probes for other instruments from 1/2" diameter PVC 
plumbing pipe, two 1/2" PVC pipe-caps, and parts of a probe that comes in a 
package of two from Radio Shack for digital meters. 

Here is a kit for probe:

http://www.qrpkits.com/rfprobe.html

and here is a site for making your own probe from a Sharpie.

http://golddredgervideo.com/kc0wox/rfprobe.htm

I thought my 1/2 PVC probe looked a bit better than the Sharpie model, but 
they both worked the same.

I also built a probe with a switch in it out of one of the larger older Heathkit 
probes. The one that was given to me by some very good fellow on this list 
was in pretty bad shape as far as the internals, but it had all the necessary 
bits. I found a slide switch at Radio Shack that just barely fit inside the body 
of the probe, and used my Dremel to cut the necessary slot. With new coax 
and plug, it works very well now and looks almost factory-made.

Ken W7EKB