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Re: [Discuss-gnuradio] improper WBX transmission of tone in center of s
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From: |
Bob McGwier |
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Subject: |
Re: [Discuss-gnuradio] improper WBX transmission of tone in center of spectrum |
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Date: |
Wed, 04 Aug 2010 05:59:57 -0400 |
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User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.11) Gecko/20100711 Thunderbird/3.0.6 |
That is an awesome amount of LO suppression in an SSB mixer based system
(I mean the power 1/330000-th of the LO). A more interesting number
given this level of LO suppression would be the introduction of a tone
(say) above the LO at LO+F and to see what the power is at LO-F (the image).
Bob
On 8/3/2010 4:55 PM, Matt Ettus wrote:
The WBX can put out about 20dBm at 520 MHz. -55dBm would be 75dB below
the desired signal, which is quite a good amount of LO suppression. If
you need more, you'll need to actively calibrate the DC offset to null
it out.
Matt
On 08/03/2010 12:55 PM, George Nychis wrote:
The power of the tone comes in to the spectrum analyzer at -55.6dBm
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