[CQ-Contest] 40m "new" approach to staying in the band?

[Andy Cunningham]

On Sat, Nov 7, 2009 at 6:38 PM, DF3KV <df3kv at t-online.de> wrote:

> Transmitting on a trx readout of 14.150.5 with 2.7kHz bandwidth in USB
> means
> that the transmitted signals appears from about 14.150.5 to 14.153.2.
> The LSB signal stays well within the band limit and is suppressed anyway.
> An USB signal on 14150.0 is already completely out of band!
> The safe limit to transmit USB on 20m will be about 14.347.3
>

Actually, the side band is about TxFreq+300Hz to TxFreq +3000Hz, so the safe
limit is 14.347.  Above that and the upper side band will be above 14.350.
 The bandwidth occupied is still 2.7kHz.


Andy
M0HAK


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Andy Cunningham
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http://www.cunningham.me.uk
M0HAK
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