2.2 GHz tx?

GNU Radio
1

I’m in the process of trying to put together a package to
do some of the direct sequence spread spectrum modulations
used by NASA’s TDRSS relay satellites. I need to be able to
transmit on 2287.5 MHz, and this appears to be just above the
the range of the RFX-1800 (2.1 GHz) and just below the range
of the RFX-2400 (2.4 GHz). Is it possible to transmit on
this frequency using either of these daughterboards?

@(^.^)@ Ed

2

Ed Criscuolo wrote:

I’m in the process of trying to put together a package to
do some of the direct sequence spread spectrum modulations
used by NASA’s TDRSS relay satellites. I need to be able to
transmit on 2287.5 MHz, and this appears to be just above the
the range of the RFX-1800 (2.1 GHz) and just below the range
of the RFX-2400 (2.4 GHz). Is it possible to transmit on
this frequency using either of these daughterboards?

You can modify an RFX1800 or an RFX2400 by replacing the 2 VCO/PLL
chips. You would need to remove the chips on there (ADF4360-3 in the
case of the RFX1800, ADF4360-0 in the case of the RFX2400) and replace
them with the ADF4360-1 from Analog devices.

Matt