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[Discuss-gnuradio] Components of BasicTX
From: |
Mathias Coinchon |
Subject: |
[Discuss-gnuradio] Components of BasicTX |
Date: |
Mon, 21 Dec 2009 05:08:29 -0800 (PST) |
Hi,
I am using BasicTX daughterboard to generate a VHF signal around 228MHz.
For this a complex signal is generated at -28MHz leading normally to harmonic
components at
128MHz-28=100MHz
256-28MHz=228MHz (wanted signal)
384-28MHz=356MHz
However looking at the spectrum (see attached), I still see powerful components
at
128+28=156MHz
256+28=284MHz
Is it normal or is is a missconfiguration from my side or an I/Q gain inbalance
?
Is there a way to avoid these 156 and 284MHz components ? (they are hard to
filter compared to other one actually)
Thank you
Mathias
basictx.jpg
Description: JPEG image
- [Discuss-gnuradio] Components of BasicTX,
Mathias Coinchon <=