Do any companies sell those blank RF probe tubes with metal tips? I recall back in the 60s you could buy the entire probes with internal parts as kits. They came with the same basic "shell" but had different internal parts for different uses. The parts inside of them are basic. Normally one diode and a resistor(s) or cap, or both.
I've found the schematics for several different probes, and I know that some people build them in a pill bottle, or ink pen shell, or whatever, but I'd like to find some of the REAL shells if they are sold.
Yep, those are the schematics I have, and maybe some popular electronics magazine articles as well.
I know this new generation of fat lazy kids are too lazy to build kits, but probes are still used even on modern electronic test gear. I'm sure there are some technicians, experimenters and some older guys who still want to build a special needs probe, and need a plastic shell with tip to do so.... Someone must sell them....
There is no shortage of "Kids" (either in the classic teen bracket, or by you're implied definition of anyone else under 60) building kits. The kit companies of yesteryear and their kits aren't in business any more. The big thing now is Arduino, Instructables and the Makers.
As much as you hate "Anything Chinese" the bottom line is you can't compete against them either. Heathkit is back and trying to sell kits again. Tell me why I should pay $149 for an transistorized AM radio.
And after all your bellyaching about "I want tubes" I see you bought a used MAX Model 200. That has neither any vacuum tubes in it, nor was it manufactured in the US.
Oh, and all the prices you remember? Multiply them by roughly ten for the value in today's currency. That $14 Heathkit something? $149 now.
So quite playing Rip Van Winkle and bitching that it's not the '60s any more.
I asked a simple question, if you cant answer it, maybe someone else can. I only asked because I dont know much about what companies sell what. It's been years since I dealt with electronics companies other than radio shack.
And yea, I like tube stuff, but I bought a XAM solid state amp. So what, that's my business, not yours.... It's a lot better than those crappy computer speakers. Regardless, I buy what I damn well please, and you dont have any decisions in what I buy or do. Nor do I really need your opinions. I asked if anyone knows if any stores sells blank probe tips, not for opinions of how to live my life, which is none of your damn business anyhow.
I could spend a whole day googling for these probes, so I asked for some advice. If you cant answer a simple question, dont answer......
You are making it far too easy. A basic search found these and two other li nks to them.
Give a man a fish....
Agreed on the BS factor however. When it is convenient to whine about Chin a, let's whine. When it is convenient to use their products, go for it. XA M products were part of the initial foray in the race for the bottom. That $0.99 pair of underwear as it were. To mix a metaphor, the rest of the came l inevitably followed. And here we are.
This XAM was made in Taiwan, which I know is darn near the same as China, but it was made around 1970, and made quite well. The entire case is metal, and well made. For my stereo, I like tube amps and want more power, but for a computer sound system, I just want to hear what is coming out of the computer. My laptop has practically no volume at all from it's internal speakers. Now I can actually hear it, and I am pleased with the sound. I spent almost twice what I paid for the XAM about a year ago, for some of the so called "computer speakers". They had poor sound, and they quit working after 7 months. My prior ones lasted maybe 2 years, and they had crappy sound too.
Sure, I had the speakers that I am using on this XAM, but I know this system will outlast any of those cheap computer speakers and it's still small enough to haul around easily. When I saw it, I knew that is was what I was looking for. And it suits me well for the intended use. Not to mention it was cheap.
Even without a schematic, I am sure I can fix it. Particularly since it has real power transistors for the output stage, not those damn ICs that usually can not be replaced, because they are not available.
But I'd still like to have a schematic if I can locate one.
The probe in the old ARRL handbooks was in the sort of shield and socket used with 7 pin tubes. The pin connectors were removed from the socket and a long screw was installed through the center tube of the socket. All the RF probe parts were installed on a terminal strip which was held to the socket by the screw which also served as the tip of the probe.
But it's no longer so easy to find tube sockets and shields. It looked like a good idea back then.
But I did try making a probe, and I wasn't really pleased with the results. It looked not so great.
I'd just go to a hobby store (they still exist) and hope to find some brass tubing that was big enough and make probe case with that. If the hobby store sells the brass tubing, then likely they sell small bits of brass sheet, and one could make end caps with those.
For things that don't need shielding, old markers to work.