[hpsdr] angelia questions

[wully]

Hi Abhi, hi all

since some days I am experimenting with my new angelia. The diversity 
with the two LT2208 runs ok. But I have two problems, which are not yet 
clear to me.

1) A minor problem: the Transmit output is about a factor of four to 
five smaller, than with the same level when using Mercury/Pennylane 
(compared by using a tune tone), probably the defining current of the 
DA-chip is different?.

2) A more serious problem: the microphone does not work. When activating 
the mike, I see a noise pedestal in the parallel active rx, but when 
speaking into the mike, no change of this noise pedestal is occuring.  
When using the same software, the same mike on my hermes (TAPR), the 
modulation is clearly seen. So, it does not seem to me a software 
problem (mike boost is actively set through the USB-Protocol). The 
configuration of the mike input is the same in both cases (an Electret 
mike, using the bias).

I will further investigate.

Comments about this behavior are welcome.

73, hb9epu