Switch Bluetooth with Pickup Selector on Tube Radio. Really NO noise.

Electronics Old and New by M Caldeira

description

A comment on one of my recent videos called my attention to the probability that having a bluetooth module permanently switched on inside a tube radio was probably not a great idea. As it's only required when we select the pickup input, there is not good reason for letting it pollute the airwaves while we're listening to radio, right? Along comes the idea (from Rodney) to drive a relay from the magic eye's high voltage supply, which would provide power to the BT module only when said eye was off, i.e. when NO radio was being listened to, i.e. when the pickup selector was activated, i.e. when we wanted to listen to the bluetooth audio. You get the idea.

Enjoy and stay safe. https://drive.google.com/open?id=1lJ5oMTu9_TJx24MI7mXR5xI_aYOhBYYU

You can now support the channel: https://www.patreon.com/mcaldeira https://paypal.me/macaldeira #tuberadios #antiqueradio #radiorestoration

DIY TEST GEAR: The title says it all: https://www.youtube.com/watch?v=7buNHf6HoDw&list=PLy5M_tA9ux7KkjmWX0I0zNocg6NF33EfL

RESTORATION BUILDING BLOCKS: A series of videos showing detailed steps used the restoration process of tube equipment: https://www.youtube.com/watch?v=7xvTGd4ysRE&list=PLy5M_tA9ux7JSYx8z2mw303vx287LHpzf

HowTo's: Various videos on some simple techniques and projects: https://www.youtube.com/watch?v=lgr-J_D6pSU&list=PLy5M_tA9ux7K3B77iUGyLPai3RIvJOrkO

See also playlists on some other completed restoration projects.

PHILIPS BX750A: https://www.youtube.com/watch?v=i8U9Lteja5o&list=PLy5M_tA9ux7IG6XgctidGO0u0DeT3_CxF

TELEFUNKEN OPUS 2114: https://www.youtube.com/watch?v=_HO2bjY5vuw&list=PLy5M_tA9ux7LhcZ9h9plfTFmjaM1mcifu

SABA UW-175-Z 3D: https://www.youtube.com/watch?v=cca4i60ZLw4&list=PLy5M_tA9ux7IWL18nsrSf4RnjsuPjHC-p

GRUNDIG 1070: https://www.youtube.com/watch?v=i4J5l0fwhko&list=PLy5M_tA9ux7JgnyYPRWOK763aJ8bg3iCI

SCHAUB-LORENZ GOLDY 58 type 3020: https://www.youtube.com/watch?v=RSbt7qVed78&list=PLy5M_tA9ux7IBse5G--Kl89SPS9sATXfZ

BUSH VHF64: https://www.youtube.com/watch?v=U--6JymkQ1M&list=PLy5M_tA9ux7KsvN5M48cX6cxN4jSz0s3X