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Scotty's Sled Shed Replacement Probe Modification Kit for Heathkit IT-12 and T-4 Visual Signal Tracers.

Replacement Probe and modification Kit for a DIY install for the Heathkit IT-12 and T-4 Signal tracers.

If you picked up one of these awesome signal tracers at a swap or marketplace and did not receive the elusive original probe, then this kit is for you!

No more making pill bottle probes or cutting down copper tubing.

The great part about Heathkit was it was a Kit! So instead of making probes for you, I created a DIY kit so you can enjoy a time once past of kit building.

With the 1/4" phono jack kit you can expand the use of the Signal Tracer. When not using mine to troubleshoot, I use it as a computer speaker, guitar amplifier (for guitar tune-ups), connecting the RF probe to a wire antenna to pickup AM broadcast stations, and more!

This also makes a cleaner bench when you can unplug your probe. The original probe was a fixed connection wired inside.

Instructions are available for a PDF Download.
There will be a pamphlet inside on how to download the instructions from my W8AOR site.

Kit includes:

QTY2: Test lead probes

QTY2: 36" sections of RG 174 coax

QTY2: Alligator clips with heat shrink tubing

QTY2: 4" pieces of NTE clear 3/8" heat shrink tubing

QTY2: Custom labels to mark your probes

QTY1: .001uf 200v ceramic capacitor (RF probe)

QTY1: 1n34A Crystal Diode (RF probe)

QTY1: female bulkhead 1/4" mono phono jack

QTY1: Male 1/4" mono phono plug

QTY1: 30" piece of 18awg flexible silicone coated wire (ground leads)'

QTY1: 4" piece of RG174 jumper

QTY2: 4" piece of 18awg flexible silicone coated wire (1 red, 1 black)

Now the legal stuff:

CAUTION! These units have lethal voltages inside. CAUTION!

Buyer takes full responsibility for their own safety and ensuring they have the skillsets to install the kit.

Scotty's Sled Shed LLC is NOT RESPONSIBLE for any injuries, or damage you incur installing this kit.

Buyer takes full responsibility for themselves. The installation guide is a guide. You choose to use the tips or not. Your choice. An experienced technician may find 10 other ways that is better than the guide and there is nothing wrong with it.

I reserve the right to substitute components. So if you get a 1 watt 330k ohm and the pic shows a 1/2 watt, please understand I have to navigate supply chain issues as well. Sometimes 1/2 watts are out of stock and/or a 1 watt is cheaper.

Or the blues ones are out of stock and I have to get black ones.

These parts are aftermarket. NOT OEM.

If you find an issue with the components, please, please reach out to me so I can help resolve the issue. I do not mark the resistors. I expect you to either know how to read resistor codes and/or use an ohm meter to validate you did install the 3.3M ohm resistor instead of the 330 ohm resistor.