Scopes I have known and loved (or not)

[ppppenguin]

Thinking about 'scopes ancient and modern today so time to revive this ancient thread.

The ancient is a Hartley 13A which I found at the Broadcast Engineering Museum. I don't know where it came from but we don't want it. It's going to Retrotech to raise funds. These will be used to pay for fixing the hernia Unusually it has its front cover, mains lead and printed manual. Any idea on pricing?

The modern is a Fluke Scopemeter, not sure which model. One of these turned up at the museum and it's potentially useful, such as when fooling around in awkward spaces behind rack bays. A fellow trustee is giving it a check up. It runs on its mains PSU/charger but the battery pack is completely shot. The official replacement is about £250 but I think he's found a compatible for about £30.

[DrStrangelove]

Ah, the 13A. A hernia hiding in an oscilloscope. Built out of girders.

I had one. £25 back in 1970ish.

Dreadful thing. Uncalibrated Y & X.

Y2 channel is invert wrt Y1 which is a bit confusing.

Cathode follower probe for "HF" measurements (it runs out of steam at about 4.5MHz only achieved in single channel mode: no Y2 then).

There's an article in WW from about 1970 describing how to "improve" it a little.

The original Boatanchor of oscilloscopes.

I built a trolley for mine. Said trolley still lives in next door's car port, whereas the 13A resides in bits in mine.

[Craig]

My first scope. Must have been 15 at the time (so about '71), and cheerfully carried it up the steps into the porch. That had the lid, CF probe and mains lead. And the rubberised connecting leads.

Like you said - an awful scope. But built like a battleship. Wierdly the CRT was a true double gun double beam.

Quite forget what I did with it. Gave it to someone eventually I think. Last time I saw one was when I was doing some restoration work at BP; I showed surprise at the fact they had one. "Do you want it?

The 13A are not worth much candidly.

Craig

[ppppenguin]

Definitely built like a battleship. If you dropped it on the enemy they would know about it! The dual gun tube was probably simpler than beam switching electronics back then.

I'll put £25 on it at Retrotech and see if anyone bites.