Bradley 192 oscilloscope Calibrator - UK Vintage Radio Repair and Restoration Discussion Forum

WME_bill · 25th Oct 2018, 4:18 pm

I have just been asked for the Specification Sheet of the Bradley 192 oscilloscope calibrator by Ctymms90.
It is probably the most versatile and easiest to use of all the calibrators, and as it appears from time to time on auction sites, I felt people might be interested to see what they would be getting.
So I attach the 1972 sales specification. The increase in price over 15 years is a bit horrific.
When you get your machine, I also have the manual somewhere, though it seems pretty reliable.
Pulsetek bought Bradley when Lucas gave up, so you may see that name also.
wme_Bill

hysteresis · 25th Oct 2018, 5:50 pm

Quote:

Originally Posted by WME_bill

Pulsetek bought Bradley when Lucas gave up, so you may see that name also.

It's also known as the Ballantine Model 6125A:
http://lcweb2.loc.gov/master/mbrs/re...Calibrator.pdf

Ed_Dinning · 25th Oct 2018, 8:16 pm

Hi Gents. I have the full manual for this equipment if anyone needs a copy/ scan

Ed

Andrewausfa · 25th Oct 2018, 10:05 pm

I have a Bradley 156 under the stairs which was slightly low on output voltage from memory and probably needs new smoothers (being an ex-production environment machine) and a recalibration.

Do you have anything on that Bill?

Thanks - Andrew

WME_bill · 26th Oct 2018, 11:00 am

Bradley 156. For Andrewausfa. Yes, I seem to have the complete manual; and also a specification/ sales leaflet. It is very similar to the later model 192. They come to nearly 7MB, which I would prefer to put on a CD and post to you for a nominal sum. Send me a private message if interested.
Thanks to Hysteresis about Ballantyne model. They were presumably selling in the USA.
wme_bill

25th Oct 2018, 8:16 pm	#3
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,195	Re: Bradley 192 oscilloscope Calibrator Hi Gents. I have the full manual for this equipment if anyone needs a copy/ scan Ed

25th Oct 2018, 10:05 pm	#4
Andrewausfa Octode Join Date: Dec 2010 Location: St Ives, Cambridgeshire, UK. Posts: 1,180	Re: Bradley 192 oscilloscope Calibrator I have a Bradley 156 under the stairs which was slightly low on output voltage from memory and probably needs new smoothers (being an ex-production environment machine) and a recalibration. Do you have anything on that Bill? Thanks - Andrew __________________ Invisible airwaves crackle with life. Or they should do. BVWS Member

26th Oct 2018, 11:00 am	#5
WME_bill Octode Join Date: Oct 2007 Location: Exeter, Devon, UK. Posts: 1,554	Re: Bradley 192 oscilloscope Calibrator Bradley 156. For Andrewausfa. Yes, I seem to have the complete manual; and also a specification/ sales leaflet. It is very similar to the later model 192. They come to nearly 7MB, which I would prefer to put on a CD and post to you for a nominal sum. Send me a private message if interested. Thanks to Hysteresis about Ballantyne model. They were presumably selling in the USA. wme_bill