Vintage miniature oscilloscopes - how many were there?

[cvanc]

Hi all-

I'd like to compose a list of the 'good' miniature scopes that were made back in the day.  From recent posts on this forum I discovered the Leader LBO-325 which is, let's face it, cute as a button.  And I know there were some tiny scopes made by Sony, or was it Sony/Tektronix?

Did anyone else make this kind of thing?  It would be cool to post photos of the respective models if possible.

Is there one or two of them that is still considered decent stuff?  I feel a nostalgia buy coming on 

[Yansi]

The soviet C1-94 scope. Tiny, completely transistored, with very nice documentation and quite repairable. (have repaired two of those for friends so far).



I have also some other soviet mini scopes at home, but they are real garbagge.  Leader LBO-325? I do not consider that small. That seems a usual size. So what is your goal here?

[CJay]

Thandar SC110

[artag]

They don't come cuter than the Tek 200 series and especially the 222. Quite advanced too, with digital storage and on-screen displays.

https://www.eevblog.com/forum/testgear/vintage-tek-restoration-pictures-by-martin/msg590298/#msg590298

http://w140.com/tekwiki/wiki/222

I have a Philips PM3010. With a screen magnifier.

https://www.flickr.com/photos/11328208@N00/6116336628

[tautech]

How small is miniature ? 

Aaron BS310S 95mm CRO.


Thread:
https://www.eevblog.com/forum/testgear/aaron-bs-310s-cro-mini-teardowm/

[buck converter]

eBay auction: #152653465446
not sure if this qualifies as 'good', but is small!

[Andy Watson]

They don't come cuter than the Tek 200 series and especially the 222. Quite advanced too, with digital storage and on-screen displays.

Very true. I have a 222 and I find it surprisingly useful.

Back in the day I used to lust after one of those Sinclair, SC110 (?) but (perhaps fortunately) never had the means to procure one.

[RandallMcRee]

Non-Linear Systems ms-215, 230

https://wa5znu.org/2007/09/miniscope/

[edavid]

Here are some to consider:

B+K 1420 15MHz 2ch
Hitachi V059B 7MHz 1ch
Hitachi V209 20MHz 2ch 3"
Hitachi V509 50MHz 2ch
Iwatsu SS-3510 50MHz 2 ch
Leader 313A 20MHz 2ch
Leader LBO-315 60MHz
Leader LBO-324 40MHz 9lb
Leader LBO-325 60MHz 9lb
NLS 215 15MHz 2 ch
NLS 230 30MHz 2 ch
NLS MS-15 1 ch
Panasonic VP5610A 100MHz 3ch w/readout
Philip PM3010 5Mhz 2ch
Tektronix 211 500kHz 1ch
Tektronix 212 500kHz 2ch 6x10 CRT
Tektronix 213 1MHz 1ch w/TRMS DMM
Tektronix 214 500kHz 2ch storage 6x10 CRT
Tektronix 221 5MHz 1ch
Tektronix 222 DSO 10MHz 2ch
Tektronix 222A DSO 10MHz 2ch
Tektronix 222PS DSO 10MHz 2ch "PowerScout"
Tektronix 335 35MHz 2 ch 11lb
Tektronix 335A 35MHz 2 ch 11lb
VuData 2521 25MHz
VuData PS935 2ch
VuData PS940B 2ch
VuData PS950A 50MHz 2ch

[edavid]

How small is miniature ? 

Aaron BS310S 95mm CRO.

I think a 3" CRT is the largest that can be considered miniature.

[kalel]

The soviet C1-94 scope. Tiny, completely transistored, with very nice documentation and quite repairable. (have repaired two of those for friends so far).

Just out of curiosity, how much do they go for?

I would rather have one of those cheap USB scopes as a first scope these days, so as I said, strictly curious.

[bitseeker]

The Tek/Sony 323 (4 MHz) and 324 (10 MHz) might be the ones you're thinking of. They're pretty cute, too. Add-on modules for them include the Tek 1401/1401A spectrum analyzer and 1501 TDR.

[texaspyro]

Tektronix SC501 FTW!  5 MHz single channel. Takes one slot in a TM500 series mainframe.

Also the SC502 (10 MHz),  SC503 (10 MHz storage), and SC504 (80 MHz) dual wide modules.   The SC504 is my "go to" analog scope.

http://w140.com/tekwiki/wiki/SC501
http://w140.com/tekwiki/wiki/SC502
http://w140.com/tekwiki/wiki/SC503
http://w140.com/tekwiki/wiki/SC504

[Smokey]

From: https://www.eevblog.com/forum/testgear/saved-a-tek-7503-tek-455-and-bk1420-from-storage/?all

A tiny portable BK Precision 1420.  It is about the size of a modern bench multimeter (like a Keithley 2000) and has a little 2in x 2in display.  This is more of a novelty.
http://www.bkprecision.com/downloads/manuals/en/1420_manual.pdf

[Yansi]

The soviet C1-94 scope. Tiny, completely transistored, with very nice documentation and quite repairable. (have repaired two of those for friends so far).

Just out of curiosity, how much do they go for?

I would rather have one of those cheap USB scopes as a first scope these days, so as I said, strictly curious.

No idea, you have to google for it. But guessing no more than 40$, otherwise it should be considered as a steal!

[trueblue2k2]

Sony/Tektronix 326. 10Mhz Dual Trace. Originally had 12 VDC internal Nicad pack and bulky matching external 110V supply-charger mounted to back of scope. Added rear DC jack to use 2.5 amp wall wart. Li-ion battery pack option. Faceplate is 7"W by 3"H with 3 1/4" diagonal CRT.

[graybeard]

Tektronix SC501 FTW!  5 MHz single channel. Takes one slot in a TM500 series mainframe.

Also the SC502 (10 MHz),  SC503 (10 MHz storage), and SC504 (80 MHz) dual wide modules.   The SC504 is my "go to" analog scope.

http://w140.com/tekwiki/wiki/SC501
http://w140.com/tekwiki/wiki/SC502
http://w140.com/tekwiki/wiki/SC503
http://w140.com/tekwiki/wiki/SC504

I have an SC501 in excellent condition that works well. however I have not used it in years except to check to see if it was still working.  It does have a beautiful bright trace.  I do have a one slot frame, but I unusually use it for my current probe amplifier.

If I want to use an analog scope I use my HAMEG HM303-6 or TEK 7904 since it is on a cart and easy to move to where ever I need it.

[justanothername]

There is also the Thandar SC110A with a tiny screen.

[dr_dan]

Also: Black Star 1502  2 channel 15MHz

[Cliff Matthews]

I repaired one of these mini Tek's last year..

[med6753]

Tek 321A next to a larger Tek 310A on an optional fan mount.

[5065AGuru]

Check this guys collection on antique radio forums!

Wow some cool old tech!!!

[TurboTom]

If the Tek/Sony 300 series counts as "miniature", I'ld like to add the 314 10MHz analog storage scope. Due to the fragile storage tube, its getting harder and harder to find (or assemble) a unit in full working order. When in good shape, they produce a really crisp and detailed picture despite the low acceleration voltage of 2kV total. The storage mode unfortunately comes along with reduced contrast since the flood guns slightly illuminate the whole screen. Nevertheless, I'm quite happy I've been able to save such a cute little piece of history from the dumpster and extend its "life" by a few decades...

[AVGresponding]

The smallest I own is a Thandar SC110A which has a 1 1/2" diagonal size CRT.

I do remember seeing one in either Radio Shack or maybe Maplins in the early 90s or so, which was "pen" shaped, with a tiny LCD dot matrix screen, probably no more than an inch diagonal.

[Ground_Loop]

Behold the Tektronix dual beam 3-trace miniature oscilloscope.