[hpsdr] AngeliaLite project

Oleg Skydan olegskydan at gmail.com
Sat Feb 15 07:22:15 PST 2020


Hi Helmut,

> I'm wondering what your intention for the future is. Do you want
> to market the boards?

I made one set for myself and I gave spare boards to Pavel US4ICI, he 
assembled them - one set for himself, others he will probably sell. I have 
no idea if there will be any interest to them.

> Due to the low sampling rate your
> product can not cover the 50 MHz band.

The ADC sample rate is 77.76MSPS, but the DAC sample rate is 155.52MSPS, so 
50MHz signals are received nicely in the 2nd Nyquist ADC zone, as well as 
there is no problem to produce good TX signal with 155.52MSPS samplerate 
(the DAC still operates in the 1st Nyquist zone).

The only thing is the additional filtering needed - at least 30MHz LPF for 
HF and BFP for the 50MHz band.

73!
Oleg UR3IQO 



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