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From: | Matt Ettus |
Subject: | Re: [Discuss-gnuradio] 2.2 GHz tx? |
Date: | Wed, 14 Nov 2007 10:27:46 -0800 |
User-agent: | Thunderbird 2.0.0.0 (X11/20070326) |
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
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