New to SDR, BladeRF 2.0 xA4 gain question
Posted: Sat Sep 04, 2021 8:21 pm
Hello all,
I am developing a simple SDR transmission platform for learning purposes using Nuand's BladeRF 2.0 xA4. I have been successful in getting the device to transmit using a boilerplate, but have been confounded by the gain setting.
Using the terminal bladeRF-cli program the software reports (by using the command print tx1 gain) that the device (2.0 xA4) has a gain range of -23.5 to 66. Is this in db? A gain of 66 db seems like it should be consuming a fair amount of power but the maximum output of the device is only 8dbm according to Nuand's datasheet. Am I misunderstanding something fundamental here? Is the device outputting a -58dbm signal (8-66) with 0 gain? Or is the gain range smaller and the bladeRF-cli client is feeding me bad information.
If someone could clear my misunderstanding up or point me to some resources for further reading I would greatly appreciate it.
I am developing a simple SDR transmission platform for learning purposes using Nuand's BladeRF 2.0 xA4. I have been successful in getting the device to transmit using a boilerplate, but have been confounded by the gain setting.
Using the terminal bladeRF-cli program the software reports (by using the command print tx1 gain) that the device (2.0 xA4) has a gain range of -23.5 to 66. Is this in db? A gain of 66 db seems like it should be consuming a fair amount of power but the maximum output of the device is only 8dbm according to Nuand's datasheet. Am I misunderstanding something fundamental here? Is the device outputting a -58dbm signal (8-66) with 0 gain? Or is the gain range smaller and the bladeRF-cli client is feeding me bad information.
If someone could clear my misunderstanding up or point me to some resources for further reading I would greatly appreciate it.