Ediswan 2 valve radiophone - UK Vintage Radio Repair and Restoration Discussion Forum

Robert McGregor · 24th May 2020, 7:31 am

Hi everyone,
I have an Ediswan 2 valve radiophone that I haven't been able to find any information on. The closest is an advert for an Ediswan 'twovee'. In that advert, there is a reference to a 'predecessor', so I'm guessing my set is that model. Does anyone have another, or other information. I would like to ad my model to the radiomuseum website, but wanted some extra information to add. I will draw out a circuit as it has an unusual plug in coil arrangement - a basket wound coil on the rear, and an apposing plus/socket which is currently empty. I think it might need a link fitted? My theory (which I will test shortly) is that the link and coil are reversed for different wavelengths?

Robert

vinrads · 24th May 2020, 10:51 am

That's a nice set up there Robert, good luck finding info. Mick.

Robert McGregor · 24th May 2020, 12:05 pm

Thanks Mick. I'm still working out the circuit configuration. A bit tricky. I usually compare these early circuits to those of John Scott-Taggart, but no luck yet. I'll keep playing

24th May 2020, 7:31 am	#1
Robert McGregor Triode Join Date: Jul 2016 Location: Victoria, Australia Posts: 20	Ediswan 2 valve radiophone Hi everyone, I have an Ediswan 2 valve radiophone that I haven't been able to find any information on. The closest is an advert for an Ediswan 'twovee'. In that advert, there is a reference to a 'predecessor', so I'm guessing my set is that model. Does anyone have another, or other information. I would like to ad my model to the radiomuseum website, but wanted some extra information to add. I will draw out a circuit as it has an unusual plug in coil arrangement - a basket wound coil on the rear, and an apposing plus/socket which is currently empty. I think it might need a link fitted? My theory (which I will test shortly) is that the link and coil are reversed for different wavelengths? Robert Attached Thumbnails

24th May 2020, 10:51 am	#2
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,766	Re: Ediswan 2 valve radiophone That's a nice set up there Robert, good luck finding info. Mick.

24th May 2020, 12:05 pm	#3
Robert McGregor Triode Join Date: Jul 2016 Location: Victoria, Australia Posts: 20	Re: Ediswan 2 valve radiophone Thanks Mick. I'm still working out the circuit configuration. A bit tricky. I usually compare these early circuits to those of John Scott-Taggart, but no luck yet. I'll keep playing