Hi Cinaed, You really need to read up on dB’s.
0dBm = 1mW as you have stated; 30dBm = 1W; 40dBm = 10W; 43dBm = 20W, one more dBm will take that to somewhere around 22W (I haven’t done the calculation, I’m working from memory). If you ’smoke’ the RF stage on the HackRF I doubt that you would see anything usable on the output, indeed you could end up with a really bad source of interference. Best regards Roy Formerly G4GGS > On 9Mar, 2016, at 09:18, Cinaed Simson <[email protected]> wrote: > > Hi - I'd like to increase the TX power of the HackRF to 50 mW. > > First, I disable TX. > > Since the dBm=0, this implies the power output will be on the order of 1 > mW. > > Then I add an external LNA with a gain of 44 dB on the RF band I'm > transmitting on which raises the TX power of the HackRF to 44 mW. > > The antenna has a gain of 6 dB - the cable and connector losses are on > the order of 1 dB, so the maximum effective power is 49 mW. > > I'm assuming this independent of the IF gain. > > So I could smoke the TX amplifier on HackRF and still be able to use the > HackRF to TX at roughly 17 dBm :). > > -- Cinaed > > _______________________________________________ > HackRF-dev mailing list > [email protected] > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev _______________________________________________ HackRF-dev mailing list [email protected] https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
