Tet equipment for a new guy

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Tet equipment for a new guy

Post by radioalfa on Wed Oct 31, 2012 1:37 pm

I bet this has been asked many times......but my search did not turn up too much. (probably operator error)
I am currently restoring a Radiola 60. I have finished the power supply, and have begun to work on the receiver.

I currently own the following test equipment
2 DMM's (one has a capacitor checking function, but I have not tried it yet)
1 Analog multi meter (triplett 630)
1 Tube tester (superior TV-10)

What is the next most logical choice for a piece of test equipment, considering my current project?

Thanks,
Russ
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Re: Tet equipment for a new guy

Post by mr_ed01 on Wed Oct 31, 2012 2:51 pm

Possibly a RF Signal Generator.

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Re: Tet equipment for a new guy

Post by Leigh on Wed Oct 31, 2012 6:04 pm

You definitely need a signal generator. It's required for any kind of alignment, unless you want to use off-the-air signals, and that's a royal pain.

There are lots of different ones out there at various prices. If you can afford it get a modern synthesized generator. You can be sure your frequencies are accurate if you use one of those.

The most important characteristic of a sig gen is stability. You want it to stay where you set it, not drift all over the county. Tube-type equipment needs to warm up for about an hour before you actually use it, to settle down.

- Leigh


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Re: Tet equipment for a new guy

Post by willy3486 on Wed Oct 31, 2012 9:28 pm

Another few items to add is a signal tracer. I have plans for one that can be easily be made in a few minutes out of a old transistor radio. I would use one that used a nine volt battery only and add a 9 volt adapter. Anyway if you want a scan pm me with your email and I will send it. I hope to get it posted online but I haven't had a chance yet.
The other item is some type of isolation transformer and a variable type of power supply. I use one of the sencore units that has a isolation transformer and variac built in. The three tools I use the most is the signal generator,tracer and isolated transformer. I fix most of the tube radio I repair with these main tools.

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Re: Tet equipment for a new guy

Post by radioalfa on Wed Oct 31, 2012 11:47 pm

Thanks everyone, I was thinking on the lines of a signal generator myself. I did forget to mention that I use the "dim bulb" tester method of powering up. While I have considered a variac, I felt that dim bulb will get me by, at least for now.
Given the vintage of radio I am working on, does anyone have a recommendation for specific models. Leigh mentioned a modern synthesized one, I will look into that, but it sounds pricey and I would like to keep the price below 75 if possible.
Willy3486, thanks for your offer of scan, but to be honest at the noob status, I am not sure what to do with one:)

Russ
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Re: Tet equipment for a new guy

Post by Guest on Wed Oct 31, 2012 11:59 pm

Willy I would like to have a copy of the signal generator plans.

Thanks! Smile

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Re: Tet equipment for a new guy

Post by samd on Thu Nov 01, 2012 6:50 pm

Ditto on the SG plans/schematic! Thanks, Sam

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Re: Tet equipment for a new guy

Post by Guest on Sat Nov 03, 2012 11:04 pm

radioalfa wrote:Thanks everyone, I was thinking on the lines of a signal generator myself. I did forget to mention that I use the "dim bulb" tester method of powering up. While I have considered a variac, I felt that dim bulb will get me by, at least for now.
Given the vintage of radio I am working on, does anyone have a recommendation for specific models. Leigh mentioned a modern synthesized one, I will look into that, but it sounds pricey and I would like to keep the price below 75 if possible.
Willy3486, thanks for your offer of scan, but to be honest at the noob status, I am not sure what to do with one:)

Russ

I would look around at what Ebay has to offer in the way of generators. That can get you on board with what the prices are on different types.

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Re: Tet equipment for a new guy

Post by willy3486 on Sun Nov 04, 2012 8:53 am

Sorry about the delay.You can get the plans at

Page 1

Page 2

I used a old 9 volt radio then made a power supply for it. I wouldn't use one that doesn't have some type of transformer to isolate the voltage.

I made many a buck using this piece. It was my first tracer and it is still my main tool.

If you have trouble with this then pm me with your email and I will send it to you directly.

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