UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

TonyDuell · 8th Oct 2017, 6:48 am

I have a Blaupunkt _valved_ car radio with a mechanism like that. There is a solenoid to shift the pointer to the start end and wind the mechanism, then it seeks along the band until the AGC signal is strong enough (I think) and stops. Hitting a button gets it to seek to the next station on the band.

Said set is MW/LW/FM, the control unit (everything but the vibrator power supply and audio output stage) is not much larger than a modern car radio).

8th Oct 2017, 6:48 am	#10
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,228	Re: Auto tuning radio theory of operation I have a Blaupunkt _valved_ car radio with a mechanism like that. There is a solenoid to shift the pointer to the start end and wind the mechanism, then it seeks along the band until the AGC signal is strong enough (I think) and stops. Hitting a button gets it to seek to the next station on the band. Said set is MW/LW/FM, the control unit (everything but the vibrator power supply and audio output stage) is not much larger than a modern car radio).