puzzling PSK behavior on K2/100

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puzzling PSK behavior on K2/100

John Wiener
Recently, got my K2 back from "The Don" Wilhelm W3FPR.  Now my K2 is  
much better.  However, I find that if I run PSK above 10 W (i.e., use  
the PA) my power supply. Radio Shack 25A, cuts out.

Given that it is a Radio Shack unit, I ordered a new power supply  
from Universal.  Unfortunately, it is on back order.

Now,  I can run an 80W carrier on the K2/100 for 20-30 seconds  
without the power supply cutting out.

Has anyone else had this happen?  It seems to me that PSK  
specifically is implicated.  I did not change any settings and they  
do appear to be normal for the sound card on my iMac G4.

Any menu items to look at on the K2?

Thanks to all.

John
AB8O
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