[Amps] Alpha 87A - fault 9

[Dick Green WC1M]

Sounds like a bad PIN diode, but 87A fault codes don't always tell you
exactly what's wrong. For example, it might have something to do with one of
the power supplies. The factory has troubleshooting procedures for some of
the faults that can isolate the cause of the problem. Your friend should
contact the factory and ask them what to do. If it's a bad PIN diode, some
of them are easy to replace, some are a little harder to replace.

73, Dick WC1M 

> -----Original Message-----
> From: Carsten Esch [mailto:carsten.esch at appello.de] 
> Sent: Monday, February 12, 2007 10:23 AM
> To: amps at contesting.com
> Subject: [Amps] Alpha 87A - fault 9
> 
> Hi,
> 
> a friend of mine has a problem with his 87A. He gets a fault 
> 9. Manual says "transmit PIN diode forward current below minimum". 
> 
> Does anyone knows how to fix the problem?
> 
> Thanks!
> 
> Carsten, DL6LAU 
> 
> 
>