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Re: [Discuss-gnuradio] Questions for 150/400MHz beacon RX development
From: |
Mamoru Yamamoto |
Subject: |
Re: [Discuss-gnuradio] Questions for 150/400MHz beacon RX development |
Date: |
Thu, 11 Jan 2007 14:26:52 +0900 |
Matt,
Thank you for your reply. My USRP board is Serial No. 750 or something.
This I bought in June 2006, and would match the following, I suppose.
===
To modify these boards for coherent applications if you have USRP rev 4 boards:
Move R64 to R84, Move R142 to R153
...
usrp/host/apps/burn-db-eeprom -A -t flex_400_mimo_b --force
===
Is this correct? I would like to know where the "flex_400_mimo_b"
file exists in the LINUX. I tried to find it, but failed.
(I found "usrp/host/apps/burn-db-eeprom" itslef.)
Regards,
Mamoru Yamamoto
> >
> >> (3) Signal coherence .. (a)
> >> I need to keep signal coherence between 150MHz and 400MHz.
> >> I should run the FLEX400 board at the same timing to the
> >> USRP main board. I found the following information URL
> >> http://comsec.com/wiki?USRPClockingNotes
> >> Is this instruction still valid? I am using USRP ver4.
> >>
> >
> > I believe this is still valid. Matt, can you confirm?
> >
>
>
> The RFX400_MIMO_B will do what you want. You can find out what version
> you have by running print-db in the usrp/host/apps directory. If you
> have the plain RFX400, you can modify it to the MIMO_B version by moving
> some resistors.
>
> The early RFX400's sold were the regular version, but all shipping
> recently are the MIMO_B version.
>
> Matt
>
>