[Hackrf-dev] Mixer Conversion Loss

Vitor Augusto vitorafsr at gmail.com
Wed Dec 3 11:40:09 EST 2014


Is this possible that poor reception in some frequencies may be
because of uncalibration?

Is this possible to compensate uncalibration by correct adjusting
values with parameters -l -g and -x, or just with calibration at
firmware.

On Wed, Dec 3, 2014 at 2:23 PM, Michael Ossmann <mike at ossmann.com> wrote:
> On Wed, Dec 03, 2014 at 10:05:55AM +0900, OSQZSS wrote:
>>
>> Is the absolute maximum TX power achieved with the maximum
>> TX VGA (47dB) and TX RF amplifier (14dB)? If I set the TX VGA
>> to zero and disable the RF amplifier, can I expect -61dB TX power
>> from these maximum values?
>
> Yes, but it also depends on the content of the digital signal being
> transmitted.  I measure absolute max TX power by transmitting a constant
> carrier (I=max and Q=max).
>
> Mike
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