Modulation Transformer - UK Vintage Radio Repair and Restoration Discussion Forum

Radio Tech · 13th Jun 2013, 6:09 pm

Hello everyone,

Anybody out there got an AVO ALL Wave Oscillator they don't need? I am looking for the modulation transformer for mine. The secondary winding has gone open circuit. I would obviously pay postage ect for the item, this oscillator is the mains driven one which has the two L63 amplifying triodes so is there one out there I can grab for spares? If someone wants to send a pm regarding one welcome it.

Best Wishes

Ken

Aub · 14th Jun 2013, 9:01 am

Hi,

If you can't find a replacement, you could try using a mains transformer with the same physical dimensions.

Cheers

Aub

Nicklyons2 · 14th Jun 2013, 9:18 am

This is not a piece of gear I know but could I suggest that a 100volt audio line transformer may be a solution. They are audio bandwidth capable not 50/60Hz optimised and they have a range of taps which may give room for maneouvre. If you're stuck & want one to try I'll send you one for the cost of the postage,
Nick

Radio Tech · 14th Jun 2013, 3:34 pm

hello nicklon2,

Please if you will, send what you have in the post and I'll give it a try, postage should not be a great deal just a few pounds

Cheers

Ken

I guess you can obtain postal address, but if you get stuck let us know and i will pm it

Nicklyons2 · 14th Jun 2013, 7:40 pm

Ken, if you would PM me your address and the sort of dimensions your looking for - I've got 3 sizes - so I'll send the nearest, Nick

13th Jun 2013, 6:09 pm	#1
Radio Tech Nonode Join Date: Dec 2012 Location: Bocking, near Braintree, Essex, UK. Posts: 2,071	Modulation Transformer Hello everyone, Anybody out there got an AVO ALL Wave Oscillator they don't need? I am looking for the modulation transformer for mine. The secondary winding has gone open circuit. I would obviously pay postage ect for the item, this oscillator is the mains driven one which has the two L63 amplifying triodes so is there one out there I can grab for spares? If someone wants to send a pm regarding one welcome it. Best Wishes Ken

14th Jun 2013, 9:01 am	#2
Aub Nonode Join Date: Mar 2005 Location: Nuneaton, Warwickshire, UK. Posts: 2,039	Re: Modulation Transformer Hi, If you can't find a replacement, you could try using a mains transformer with the same physical dimensions. Cheers Aub __________________ Life's a long song, but the tune ends too soon for us all.

14th Jun 2013, 9:18 am	#3
Nicklyons2 Octode Join Date: Jan 2013 Location: Barnsley, South Yorkshire, UK. Posts: 1,517	Re: Modulation Transformer This is not a piece of gear I know but could I suggest that a 100volt audio line transformer may be a solution. They are audio bandwidth capable not 50/60Hz optimised and they have a range of taps which may give room for maneouvre. If you're stuck & want one to try I'll send you one for the cost of the postage, Nick

14th Jun 2013, 3:34 pm	#4
Radio Tech Nonode Join Date: Dec 2012 Location: Bocking, near Braintree, Essex, UK. Posts: 2,071	Re: Modulation Transformer hello nicklon2, Please if you will, send what you have in the post and I'll give it a try, postage should not be a great deal just a few pounds Cheers Ken I guess you can obtain postal address, but if you get stuck let us know and i will pm it

14th Jun 2013, 7:40 pm	#5
Nicklyons2 Octode Join Date: Jan 2013 Location: Barnsley, South Yorkshire, UK. Posts: 1,517	Re: Modulation Transformer Ken, if you would PM me your address and the sort of dimensions your looking for - I've got 3 sizes - so I'll send the nearest, Nick