vervangen EF22 door EF89 in BX685A ? (Algemeen)
door Pandu Rajan 
, 13.11.2015, 12:20 (3300 dagen geleden)
Dear Members
What changes I will have to make if I want to replace the IF valve EF22 by EF89.
Regards
P.Rajan
vervangen EF22 door EF89 in BX685A ?
door Ouwe Schipper , Sassenheim, 13.11.2015, 19:23 (3300 dagen geleden) @ Pandu Rajan
I guess there is not much more than adapting the socket
And change the resistor to G2 to get the right voltage on that grid
But allow me the question, why would one want to do so?
As far as I know, EF22 is plenty available
Nico
--
een kinderhand
is ook weer gauw leeg
vervangen EF22 door EF89 in BX685A ?
door Pandu Rajan , 15.11.2015, 04:35 (3299 dagen geleden) @ Ouwe Schipper
Dear Mr. Schipper
Thanks for your reply. One of my friends had put this query to me and I thought the best solution would be to put into the forum. It is not easy to get the 20 series valves -- ECH21, EF22, EBL21, in India. Very few people are keeping old valves.
Regards
P.Rajan
vervangen EF22 door EF89 in BX685A ?
door ruudtx , 15.11.2015, 16:39 (3298 dagen geleden) @ Pandu Rajan
You might be able to order a EF22 at some internet on line store and have it shipped to you in India.
Alternatively somebody at this forum who has a spare one might be prepared to have it shipped to you, carefully packed.
vervangen EF22 door EF89 in BX685A ?
door Hans Op den Camp , Leusden, 16.11.2015, 14:36 (3297 dagen geleden) @ ruudtx
Alternatively somebody at this forum who has a spare one might be prepared to have it shipped to you, carefully packed.
Jan Post (he's on this forum under his own name*) from Australia is always prepared to send valves all over the world 
* added by Forumbeheer.
--
Met vriendelijke radiogroet, Hans
![[image]](images/uploaded/201802181101275a895d07a9961.jpg)
vervangen EF22 door EF89 in BX685A ?
door Pandu Rajan , 19.11.2015, 12:53 (3294 dagen geleden) @ Hans Op den Camp
Dear Members
Thanks for your reply.
Regards
P.Rajan