[ARC5] Scope Question

[K5MYJ]

A lot of the older Heathkit scopes had weak power transformers. The winding 
for the CRT HV would open.

I have one old "SYNCO" sweep scope. The sweep and vertical channels are not 
calibrated. These scopes can be OK for looking at audio stuff.

I have used it to look at other scopes when I was repairing them.

The problem I have with the better scopes is when they have a busted 
switching converter for the CRT HV. Most are not repairable. At least the 
ones I have had.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "Kenneth G. Gordon" <kgordon2006 at frontier.com>
To: "Tom Lee" <tomlee at ee.stanford.edu>
Cc: <Arc5 at mailman.qth.net>
Sent: Wednesday, March 21, 2018 10:54 AM
Subject: Re: [ARC5] Scope Question


> On 20 Mar 2018 at 14:16, Tom Lee wrote:
>
>> Most of my scopes arrived with no trace. I own over 100 (possibly as
>> many as 200); don't ask why.
>
> Ha ha! I don't have to ask why: I KNOW why! :-)
>
> Anyway, I have several scopes here at the moment. A couple of old military 
> versions of the
> 7000 series Tek's, an HP 12-something, which works very well. It is my 
> main bench scope.
> And I have the two Tek 24xx types, the 2467B working (mostly - channel two 
> is out), and the
> 2465B which shows no trace, but goes completely through its turn-on check. 
> I suspect the
> blanking is locked on.
>
> I also have a couple of very old scopes stored away. I hate to simply toss 
> them.
>
> And I have at least two of those cute very small military scopes with the 
> slanted screens. I
> forget the model numbers. Military versions of the commercial 
> "PocketScope". Neat units.
>
> Ken W7EKB
>
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