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 Free to good home - a Cossor 1049 MkII dual BEAM oscilloscope
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 Return to top of page · Post #: 1 · Written at 11:21:45 AM on 10 March 2019.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1227

I've had this beast sitting in a storage bin for about 12 years,
I've finally conceded I'll never get around to doing anything with it.

Like this one:

https://www.thevalvepage.com/testeq/cossor/1049/1049.htm

Mine looks as though it has done little if any work. Not surprising as it's ex Electricity Commission. One of the front handles got bent on its way to me. Other than that, and a little external dirt and surface rust, it's like new.

It looks like a 1930's design internally, it has large UK - type valves.

I haven't powered it up.

If you have an interest, come and get it. It weighs 35 kilos....


 
 Return to top of page · Post #: 2 · Written at 2:06:08 PM on 10 March 2019.
Stdavies's Gravatar
 Location: Metford, NSW
 Member since 23 December 2018
 Member #: 2313
 Postcount: 12

Hi, I'd love to take posession of this beautiful machine.

I live in Maitland, so it's a 5hr round trip - maybe we can organise it for next weekend?

I will send my contact details to your email.


 
 Return to top of page · Post #: 3 · Written at 2:14:04 PM on 10 March 2019.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1227

Next weekend should be fine.

Enjoy!


 
 Return to top of page · Post #: 4 · Written at 6:52:11 AM on 14 March 2019.
Labrat's avatar
 Location: Penrith, NSW
 Member since 7 April 2012
 Member #: 1128
 Postcount: 253

34kg. That is amazing that it does not collapse under its own weight.
The picture is not too clear, but it looks to have a handle at the top, or is that a "lifting hook".

Regards

Wayne.


 
 Return to top of page · Post #: 5 · Written at 1:44:29 PM on 14 March 2019.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1227

It's a monster Wayne! I doubt that lifting it via its handle would be permitted these days with OH&S!

It has a very solid cast frame. I doubt it's aluminium, probably cast iron!


 
 Return to top of page · Post #: 6 · Written at 5:11:26 PM on 14 March 2019.
Gandhn's Gravatar
 Location: Windella, NSW
 Member since 5 November 2010
 Member #: 770
 Postcount: 306

I have just downloaded a copy of the full manual, as I am interested in the description "Dual Beam" as opposed to "Dual Trace" and my quick look seems to indicate there are 2 electron guns in the CRT therefore 2 quite independent channels.This allows some measurements that may be compromised with a dual trace CRT, involving fast toggling between channels, using a single electron beam.

Incidentally, the case is described as aluminium and the lifting hook is called a carrying handle. Maybe techs were stronger then!

Harold


 
 Return to top of page · Post #: 7 · Written at 12:08:10 PM on 15 March 2019.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1227

Yes, the CRT does have two guns.

I guess the main weight is in the transformers, chokes and huge oil-filled caps. There are NO electrolytics in this thing! Active filtering using valve pass devices.


 
 Return to top of page · Post #: 8 · Written at 9:17:31 PM on 15 March 2019.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 3433

I do love oil filled caps. You can get rectangular ones, fully sealed in metal, with not a problem. You then get the ones in BC-221-N Frequency Meter. That leak both physically & electrically. I did what the Americans call "Re Stuffing" to them. The can makes a good shield, whilst looking a little more original.

Often these have PCB's in them: PCB's are not user friendly. One of two reasons why food & drink is kept out of the radio workshop. I find them to be on par with the reliability of Wax Paper types: BA


 
 Return to top of page · Post #: 9 · Written at 8:53:27 AM on 16 March 2019.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 1227

Don't even THINK about restuffing those caps.
Poly Chlorinated Biphenyls are seriously evil chemicals.
Stay well away from them!


 
 Return to top of page · Post #: 10 · Written at 9:38:22 PM on 16 March 2019.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 3433

I spent decades working in a chemical factory, labs and in chemicals as a textile dyer, making polymers & resins in one. Flammable; Carcinogenic; Mutagenic; Some quite interesting stuff being worked on in often "Class one Zone 1" area's. I.e.one spark: Boom!

The rubber seals had turned to crap in the metal jacketed Non polarised caps and as noted was leaking out. As I know how to destroy that stuff I took the cans out (no touchy) and cleaned up the chassis (decontaminate). To keep the crap out of the environs, I destroyed it & that meant I had some nice clean cans to put back.


 
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