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Re: [Discuss-gnuradio] WBX power level
From: |
Jason Abele |
Subject: |
Re: [Discuss-gnuradio] WBX power level |
Date: |
Mon, 14 Jun 2010 11:03:28 -0700 |
>>> Hi All,
>>>
>>> Has anyone measure the power level coming out of their WBX board?
>>>
>>> Measured on a Gigatronics 8541 microwave
>>> power meter connected directly at the back of the USRP2 I am getting
>>> (with a CW carrier)
>>>
>>> 100 MHz about 35 mW
>>> 1.3 GHz about 15 mW
>>>
>>> Ettus quote
>>>
>>> 50 - 100 mW< 1.2 GHz
>>> 30 - 70mW> 1.2 GHz
>>>
>>> I know measuring power is notoriously inaccurate but I was wondering
>>> what others have found.
>>>
>>> Setup USRP2 WBX UHD
>>>
Please try the following command with non-UHD for comparison:
usrp_siggen_gui.py -x 250k -i 64 --tx-gain=25 -A 1.0 -f 1.3G
You should see about 50mW (17dBm) at 1.30025GHz
If you change the final argument to 100M you should see around
80-100mW (19-20dBm) in the tone at 100.25MHz
If you can confirm those numbers, perhaps we have a constant scalar
missing in either your flowgraph or the UHD code someplace.
Thanks
Jason
- [Discuss-gnuradio] WBX power level, Charles Brain, 2010/06/12
- Re: [Discuss-gnuradio] WBX power level, Philip Balister, 2010/06/12
- Re: [Discuss-gnuradio] WBX power level, Charles Brain, 2010/06/12
- Re: [Discuss-gnuradio] WBX power level, Timothy R. Newman, 2010/06/12
- Re: [Discuss-gnuradio] WBX power level, Charles Brain, 2010/06/15
- Re: [Discuss-gnuradio] WBX power level, Eric Blossom, 2010/06/15
- Re: [Discuss-gnuradio] WBX power level, Charles Brain, 2010/06/15
- Re: [Discuss-gnuradio] WBX power level, Jason Abele, 2010/06/15