UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Questions on 160/80 metre AM transmitters.

Bazz4CQJ · 17th Dec 2022, 6:54 pm

Thanks for that. Somewhere I have three of those oil-filled "bean-can transformers" from early Rangers. They are physically a bit bigger than the small transformer in the original AT5, but seems like they might be OK for a home-brew version. There's a third winding on them, which I think was intended to provide feedback in to the AF pre-amp to provide level-control? I've never seen the circuit for them.

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17th Dec 2022, 6:54 pm	#16
Bazz4CQJ Dekatron Join Date: Apr 2009 Location: Oxfordshire, UK. Posts: 4,934	Re: Quick question on the CODAR AT5, if anyone has one to hand. Thanks for that. Somewhere I have three of those oil-filled "bean-can transformers" from early Rangers. They are physically a bit bigger than the small transformer in the original AT5, but seems like they might be OK for a home-brew version. There's a third winding on them, which I think was intended to provide feedback in to the AF pre-amp to provide level-control? I've never seen the circuit for them. B __________________ Saturn V had 6 million pounds of fuel. It would take thirty thousand strong men to lift it an inch.