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Old 10th Sep 2011, 9:17 pm   #41
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

Quote:
Originally Posted by ScopeMonkey View Post
Brian R Pateman is totally right - you don't find old scopes, they come and find you. What's worse, the more you end up with, the faster they come...
hello Ed,
the little problem is mostly, that you have to bring them all at home, not only the one you want to have. You go anywhere to get a scope, and they load the car with..


greetings
Martin
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Old 11th Sep 2011, 12:14 pm   #42
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Default Re: Oscilloscope Collection / Junky

Martin,

You're right. I found 3 Tektronix 500-series in a skip once (545B, 547, 575). You can never rescue just one.

Ed.
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Old 17th Sep 2011, 4:37 pm   #43
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

here iin the forum are also some 453 owners.

Yesterday I got a little Scope Mobile, K212.
So the 453 can drive now with the big brothers

greetings
Martin

p.s. I`m searching to buy a Scope Mobile 205-2 !
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Old 17th Sep 2011, 5:32 pm   #44
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Default Re: Oscilloscope Collection / Junky

You guys make my small collection look quite second-rate! I have a fondness for Cossor valved scopes, as the line up of 339A, 1035 Mk III and 1071K demonstrates, all restored by me. The scope that gets the most use, however, is a fully transistorised Gould OS250B.

Here they all are, humming happily away in Cossor Corner.
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Old 17th Sep 2011, 5:38 pm   #45
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Default Re: Oscilloscope Collection / Junky

hello Phil,

here is nothing second rate. That looks very nice.
Have I seen right you have 2 light blue phosphor scopes there ?

greetings
Martin

p.s. at the following pictures, now in restoration, the little "RFT Picoskop" 4 Tubes + CRT.
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Old 17th Sep 2011, 9:38 pm   #46
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Default Re: Oscilloscope Collection / Junky

Guten abend Martin,

No, the phosphors are all green. My photograph is not as good as yours! The big Cossor 1035 has a blue tint to a green phosphor. The focus is indeed very sharp, as mentioned by a previous contributor.

I once had another Cossor 339A which I passed on to another Forum member; the phosphor was a very bright blue, which he described as "Harpic blue" (Harpic is a UK brand of toilet cleaning fluid with a very intense blue colour)

Phil
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Old 17th Sep 2011, 10:47 pm   #47
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Default Re: Oscilloscope Collection / Junky

Got me hook line and sinker,

In my study, currenty.

HP 54602B 150Mhz - My primary scope, love the readout display
Tek 2445 150Mhz - Triggers on anything, easy to use
Hameg 1007 100Mhz - All purpose bench scope with "ok" storage facilities
Kikusui 100Mhz - Used for all baseband video work. A beauty! (with time)

then a couple of 20meggers

Gould OS250A - Keeps an eye on genies. Bright and locks on tight
GW625 - vertical problems but ok for my spectrum analyzer in XY mode

some other X types

And some others (These are nice)
Waveform monitor
Vector scope

Production line

Many Rigol ??Mhz - Got to have automation with production

Not one valve scope. What a shame. I'm looking at some Telequipment and Heathkit scopes. Would love an old Tek room heater on a trolley.

Regards to all

Renato
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Old 18th Sep 2011, 8:30 am   #48
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Default Re: Oscilloscope Collection / Junky

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ok for my spectrum analyzer in XY mode
hello Renato,

interesting: you may tell us about this analyzer ?
When you look for a warm Tek, get one what have Plugin Slot. The Plugins of the 500 Series are phantastic useful @ low cost.

greetings
Martin

pic: 1L5 Spectrum Analyzer Plugin for Classic Tek
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Old 18th Sep 2011, 10:03 am   #49
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Default Re: Oscilloscope Collection / Junky

Hi Martin,

My Spectrum Analyzer is a Hameg HM 8028. 0.5 - 500Mhz. It uses a scope in XY mode for display and does not rely on the scope's bandwidth. I also have the matching Tracking generator, most usefull when looking at filter response.

I'm determined to find me an old Tek on a trolley

Cheers

Renato
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Old 18th Sep 2011, 6:38 pm   #50
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Default Re: Oscilloscope Collection / Junky

thats a modern expensive instrument. I think you use it also as a part of your job?

I need to have an 1L10 Plugin Analyzer for my glowing workroom, as extension for the 1L5.

greetings
Martin

p.s. an old glowing Tek have found me today, name = 933A
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Old 19th Sep 2011, 9:04 pm   #51
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Default Re: Oscilloscope Collection / Junky

// editing the mistakes:

The old Tek is a 533A, around 50 valves, 15MHz , 1 Slot, weight 30kg.

greetings
Martin
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Old 20th Sep 2011, 2:05 am   #52
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Default Re: Oscilloscope Collection / Junky

Quote:
Originally Posted by 6AL5W View Post
p.s. at the following pictures, now in restoration, the little "RFT Picoskop" 4 Tubes + CRT.
Martin,

Now I'm really envious! As you may have seen from the website, with my collection I try and specialise in miniature valve scopes... I've never seen this model before, looks fantastic! Should you ever wish to part with it, you know who to call

Ed.
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Old 20th Sep 2011, 7:00 pm   #53
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Default Re: Oscilloscope Collection / Junky

Ed, if you google
pikoscop ebay

You can see that a couple of these sold recently on ebay in Germany for about 25 Euros each so maybe you should search for German sellers on ebay.
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Old 20th Sep 2011, 7:28 pm   #54
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Default Re: Oscilloscope Collection / Junky

Ed,

that`s a greatful Collection !

my compliment.
I see, there is the best place a little Picoskop can find.
And I like to help you to get one. They are not expensiv.
G0HZU_JMR is correct, i have also payed 24 + postage.

greetings
Martin
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Old 20th Sep 2011, 11:17 pm   #55
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Default Re: Oscilloscope Collection / Junky

Hi Greentrace, sorry Ed,

Nice collection, well done.

My first scope was a Heathkit 10 4105??. Large transistor job that cost me many pennies. Around the same time I get involved in Ham radio classes and as a group project I build my first valve amp. It was also my last when the 800Vdc got the better of me. Thats is a long story.

Now, I cannot get the thought of a large Tek room heater out of my head, and as Martin suggested, I'm on the hunt for a 500 series. There should be quite a few hiding around locally.

Which brings me back to my question. I've come across many Heathkit scopes, I think 10-12 models, or there about. All valves, good nick etc.

Please can I have an opinion on Heathkit scopes. It seems the logical place to start before a "Room heater" valve restoration project. All my gear must be working even if it's not used. Are Heathkit scopes repairable?

Cheers all

Renato
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Old 21st Sep 2011, 7:55 am   #56
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Default Re: Oscilloscope Collection / Junky

Hi Renato,

Glad you like the site!

"10-12" is a very common model number to see on t'internet, but it's not quite correct - the model is actually IO-12 ("Laboratory Oscilloscope", IIRC).

I have two Heathkits in the collection, both OS-series, a 1 and a 2. The 2, with the copyright date 1979 in the manual, could be a contender for the last entirely-valve scope ever produced (even the rectifier is valve, AFAICR)?

Since they were intended for end-users to build, I'd guess repairability should be on the good side? Certainly in the two models mentioned, everything is easily accessible (very much so in the case of the OS-1, it contains mostly empty space ), and the manuals can be easily had online.

Also, thanks for the tip JMR and Martin, I'll keep an eye out on German eBay!

Ed.
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Old 21st Sep 2011, 8:29 pm   #57
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Default Re: Oscilloscope Collection / Junky

Hi another Scope nutter here, scopes as listed....
Tek 535A, With several plugins.
Tek 545B, on tek trolly With several plugins.
Hameg HM207.
Telequipment Servicescope D31.
Cossor 1049Mk 111A.
Telequipment S52.
Telequipment D54.
Old Lovely Hartley Scope.
Telequipment D66A.

All scopes work fine, somemore hiding.....regards....Alan.
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Old 21st Sep 2011, 9:12 pm   #58
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

a very british Tek;

533A Tektronix Gouernsey, CI
it have a lot of Mullards inside.

Only 15MHz, but a greatful Scope.
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Old 25th Sep 2011, 3:09 pm   #59
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Default Re: Oscilloscope Collection / Junky

Still tracking my Tek room heater while they are given away elsewhere on this forum. I'm sure they will all have good homes.

Back on the hunt.
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Old 25th Sep 2011, 5:06 pm   #60
6AL5W-Martin
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Default Re: Oscilloscope Collection / Junky

hello Renato,

I understand right You are looking to import one to Johannesburg?
I will import one from the states and know what is comming, that`s bad expensive.

greetings
Martin

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