[hpsdr] Pre-Distortion

[Helmut, DC6NY]

Hi Bruce, 

you are right. Sometimes it's difficult with the correct terminology, hi.
Isolation has to exceed maximal used attenuation. And here are the traps
hidden: When cross-talk isolation inside the radio is too small the
pre-distortion 'mechanism' could react on the driver signal instead of the
amp output signal. 

73,Helmut, DC6NY

-----Ursprüngliche Nachricht-----
Von: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org] Im Auftrag von Bruce Beford
Gesendet: Montag, 9. Dezember 2013 15:55
An: hpsdr at lists.openhpsdr.org
Betreff: Re: [hpsdr] Pre-Distortion

***** High Performance Software Defined Radio Discussion List *****

I believe total available "attenuation" would be more accurate than
"isolation" in this case.
-Bruce, N1RX

> Oh, OK.  I thought that you meant "isolation" in the context of a 
> directional coupler... 77dB!

> Thank you - I look forward to more developments!

> W9IP


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