UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Blaupunkt 14.922 radiogram

Diabolical Artificer · 19th Oct 2017, 6:05 am

I have some OPT's off a Blaupunkt gram pretty similar to yours, which use a ECL86. From memory they had an odd Z ratio and extra secondary winding's. I was unable to figure out how it was supposed to be connected to get the correct anode load.

Pretty sure mine had a tapped tone control as well as quite hefty bass speakers, far bigger than other gram's.

The gram was very well engineered with some very complicated doings round the tuning section allowing the AM arial to be moved on the horizontal axis. What I'm trying to get at is that the tone altering/shaping circuitry could be either well engineered and thought out, or a bit of seemed like a good idea at the time. Bit like some of Philip's Prof Brainstorm like idea's.

Andy.

19th Oct 2017, 6:05 am	#16
Diabolical Artificer Dekatron Join Date: Jul 2009 Location: Sleaford, Lincs. UK. Posts: 7,670	Re: Blaupunkt 14.922 radiogram - is it meant to be a boom box ? I have some OPT's off a Blaupunkt gram pretty similar to yours, which use a ECL86. From memory they had an odd Z ratio and extra secondary winding's. I was unable to figure out how it was supposed to be connected to get the correct anode load. Pretty sure mine had a tapped tone control as well as quite hefty bass speakers, far bigger than other gram's. The gram was very well engineered with some very complicated doings round the tuning section allowing the AM arial to be moved on the horizontal axis. What I'm trying to get at is that the tone altering/shaping circuitry could be either well engineered and thought out, or a bit of seemed like a good idea at the time. Bit like some of Philip's Prof Brainstorm like idea's. Andy. __________________ Curiosity hasn't killed this cat...so far.