Forum: GNU Radio Is it possible to buy a RFX900 without the filter?

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18631ab8ac3a337d25f4192400719a5e?d=identicon&s=25 Jhon Lee (jhon)
on 2009-04-23 07:04
(Received via mailing list)
Hi,

 I read the
discuss-gnuradio  list and know that I need to bypass the filter with a
capacitor and cut away the filter.  I would like to know if it is
possible to get a RFX900 which has removed the filter when I order it. I
might burn the board if I do this by myself. The capacitor is so small
and I don't think I can  solder the small capacitor on the RFX900. I
don't have tools. I don't know what the proper way is to cut the trace
and solder the capacitor.

Thank you,
Jhon
3719f4fea703e38bcbf8de6fe6bcdf55?d=identicon&s=25 Martin DvH (Guest)
on 2009-04-24 01:13
(Received via mailing list)
Hi Jhon,

On Wed, 2009-04-22 at 22:03 -0700, Jhon Lee wrote:
>
>  I read the discuss-gnuradio  list and know that I need to bypass the
> filter with a capacitor and cut away the filter.  I would like to know
> if it is possible to get a RFX900 which has removed the filter when I
> order it.

You could always buy an RFX1800 and reprogram it as a RFX900.
to turn your RFX1800 into a RFX900, you can run the command:

        ./burn-db-eeprom -A --force -t rfx900_mimo_b

This way you don't have to solder anything.

Also see the WIKI: What is involved in changing an RFX900 to an RFX1800?
on:
http://gnuradio.org/trac/wiki/UsrpFAQ/DBoards

Greetings,
Martin
1465dec64294fe2d825ade08ca1ee1b2?d=identicon&s=25 davek (Guest)
on 2009-04-24 05:08
(Received via mailing list)
what capacitor does rfx1800 use in C204?
3719f4fea703e38bcbf8de6fe6bcdf55?d=identicon&s=25 Martin DvH (Guest)
on 2009-04-24 15:48
(Received via mailing list)
On Thu, 2009-04-23 at 23:07 -0400, davek wrote:
> what capacitor does rfx1800 use in C204?
If I recall well it is a 100 pF 603 capacitor.

Martin
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