[Hackrf-dev] How to set Tx power

[김상혁]

As I know, range of gain at osmocom block is
RF Gain - 0 or 14 (LNP switch off or on)
IF Gain - 0 to 40 (4x)
BB Gain - 0 to 62 (2x)

is it different range from your gain level ?

> 2015. 12. 3., 오후 9:33, Mitja kocjančič <veso266 at gmail.com> 작성:
> 
> Hi when I want to set TX Power to 15dbm on 76 Mhz I just set RF Gain to 1000 (Probably no efect after 50 for RF Gain but it works) and IF Gain and BB Gain to 10000
> 
> Thats how I do it but I would be great if I could calculate (from IF And RF Gain) the power HackRF is putting out
> 
> 2015-12-03 7:45 GMT+01:00 김상혁 <tkdgur7896 at gmail.com <mailto:tkdgur7896 at gmail.com>>:
> Hi, I’m using HackRF One and I want to use frequency 2150MHz
> However, when I set high frequency(my case : 2150MHz), the Rx can’t receive any data from the Tx
> I used sample rate 16MHz and my flow graph (GNURadio) like below:
> Tx)
> File source -> packet encoder -> GMSK mod -> osmocom sink
> Rx)
> Osmocom source -> GMSK demod -> packet decoder -> file sink
> 
> I researched about Tx power and I found maximum Tx power as frequency
> 10 MHz to 2150 MHz: 5 dBm to 15 dBm, generally increasing as frequency decreases
> 2150 MHz to 2750 MHz: 13 dBm to 15 dBm
> 2750 MHz to 4000 MHz: 0 dBm to 5 dBm, increasing as frequency decreases
> 4000 MHz to 6000 MHz: -10 dBm to 0 dBm, generally increasing as frequency decreases
> Also I tried to set Gain level at osmocom sink, but I don’t know how to set the Tx power to maximum
> Which parameter is effect on Tx power ?
> Thanks,
> 
> 
> 
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