Yes, I understand gain varies with temperature and frequency, I just wasnt sure if there was any receive chain analysis performed with the daughtecard to give the developer an idea of what type of gain is provided over the attenuation range at various frequencies. I am not too concerned about tenths of dBs....I was just interested in what the actual gain range provided by the card is.
Thanks Mark ________________________________ From: Marcus D. Leech <patchvonbr...@gmail.com> Sent: Tuesday, September 29, 2020 1:58 PM To: Mark Koenig <mark.koe...@iubelttechnologies.com> Cc: usrp-users@lists.ettus.com <usrp-users@lists.ettus.com> Subject: Re: [USRP-users] TWINRX Gain On 09/29/2020 01:54 PM, Mark Koenig wrote: Marcus, Thank you for the quick response. In my application I am trying to remove the true gain I am applying to the signal. So when you refer to control range, moving from 0 to 10, may result in only 5dB of gain, or something to that effect, correct? When you have that information of the true gain applied, can you pass it along? Thank you very much. Mark ________________________________ If you're trying to mathematically remove the gain to estimate actual power at the antenna, you aren't doing it right. You need to use a known calibration source, and build a calibration table over your expected operating parameters. The fact is that actual delivered gain will change with center frequency and temperature (although the temperature effects will be small).
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