Build a Passive Signal Tracer for Valve Radio Restorations

[@terryblackman6217]

I built mine using the same circuit only I bought a little 1w amplifier module off of Ebay. This was a few years ago. Great little tool. Nice one. PS always watch and love your videos 👍

[@exeterslab7781]

Hey Terry, it really is a great tool. Thanks for watching Man, I really appreciate it 😀

[@tanveernaeem1157]

That's a smart idea. Where in the circuit did you hook up this mini amplifier?

[@moby1388]

I built this Signal Tracer and it works great. My box is a third of the size of yours.

[@exeterslab7781]

A simple circuit that does a great job for only a couple of bucks at most

[@kenf8563]

Interesting video Frank, I already have a vintage one but I’m sure some viewer/hobbyist will benefit from this one. I like that you used the gift card as a circuit board, that’s what I call thinking out of the box.

[@exeterslab7781]

Thanks Ken. Vintage ones are scarce here I've yet to see one advertised for sale. The gift card idea just came to me and they're free at the supermarket lol

[@jimnewman5596]

I have built this probe, and it works better than the heathkit probe.

[@exeterslab7781]

Wow, I thought the Heathkit would be a better performer. Goes to show that a simple circuit can do a great job, Thanks Jim :)

[@ChippyOZ]

You had an original 1N34A just lying around!? Nice simple circuit.

[@exeterslab7781]

Hey Chris, yeah I bought some several months ago thinking I would build a crystal set, which I still haven't gotten around to. Yep, the simpler the better I reckon lol. Thanks for watching

[@hestheMaster]

Is this the poor man's version Mr. Carlsons Lab? Good because I couldn't afford his stuff anyhow! LOL Nice probe Frank.

[@exeterslab7781]

Absolutely Steve. I noticed in one of his videos he has a multi meter worth over 600 bucks and that's probably one of his cheaper ones lol. Thanks Man