[Amps] Alpha 87 schematics

[Dick Green WC1M]

Ulf,

 

If it's any help, I have the same schematics as you do, and my amp was
manufactured in 1995. I believe the schematics came with the amp or I got
them from Alpha shortly after purchase. The amp you have must be pretty old,
perhaps from the early production runs. I understand there were a few
problems back then. You might consider negotiating with Alpha to swap some
or all the boards for current revs.

 

73, Dick WC1M

 

> -----Original Message-----

> From: ulf schneider [mailto:dk5tx at gmx.net]

> Sent: Monday, December 10, 2007 11:54 AM

> To: amps at contesting.com

> Subject: [Amps] Alpha 87 schematics

> 

> Hello ..

> 

> I have an defective Alpha 87 amp here, but not the right schematics. The

> board verions in my schematics are different to those in my Alpha 87.

> 

> Because I want to understand the circuit diagram of MY Alpha and not the

> latest revision I need some help.

> 

> Alpha service can NOT help me. Molly W0MOM wrote that they have only the

> schematics which are in the download area of the Alpha website

> (unbelievable). The schematics in the download area are the same I have

> here as original printout.

> 

> I need the following schematic revisions:

> 

> Board ABX-X177 Rev. F (I have Rev. I on my schematics)

> Board ABX-X180 Rev. E (I have Rev. L on my schematics)

> 

> Can anybody help me out with a copy or a scan of that board versions?!

> 

> 73!

> Ulf DK5TX

>