Is it possible to buy a RFX900 without the filter?


#1

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


#2

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


#3

what capacitor does rfx1800 use in C204?


#4

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