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Sideband · 21st Oct 2011, 10:02 am

Only one IF transformer suggests it doesn't have in IF amplifier so you've probably got the mixer feeding straight into the EF93 as a leaky-grid or anode bend detector as suggested. I think Sobell used a similar idea in the 'Sobellette'. Only really any good for local station reception. Better than a TRF but not quite as good as a full superhet.

SB

21st Oct 2011, 10:02 am	#3
Sideband Dekatron Join Date: Oct 2003 Location: Croydon, Surrey, UK. Posts: 7,578	Re: Jiskra Sonoretta midget valve radio Only one IF transformer suggests it doesn't have in IF amplifier so you've probably got the mixer feeding straight into the EF93 as a leaky-grid or anode bend detector as suggested. I think Sobell used a similar idea in the 'Sobellette'. Only really any good for local station reception. Better than a TRF but not quite as good as a full superhet. SB __________________ There are lots of brilliant keyboard players and then there is Rick Wakeman.....