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Oldcodger · 13th Jul 2021, 12:10 am

Les- takes me back to my first car, with a valve radio. the vibrator was U/S, so I mentioned it to my mentor- an old school GPO TO, mate of my dad. Walk this way, he said, and minutes later I had a new vibrator in my hand. Some electronics firms in London had a circuit based on a pair of OC28, and a tuned circuit based on a pair of transformer coupled circuits. I did build it ,but had problems with the generated noise.

13th Jul 2021, 12:10 am	#8
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Re: HT for a car radio Les- takes me back to my first car, with a valve radio. the vibrator was U/S, so I mentioned it to my mentor- an old school GPO TO, mate of my dad. Walk this way, he said, and minutes later I had a new vibrator in my hand. Some electronics firms in London had a circuit based on a pair of OC28, and a tuned circuit based on a pair of transformer coupled circuits. I did build it ,but had problems with the generated noise.