Joe Planisky wrote:
>
> This required 6 dB of gain on the 500 Hz filter. However, I noticed that
> boosting the filter gain by 6 dB also boosted the noise floor by 6
> dB. In other words, the S/N ratio at 500 Hz bandwidth was 6 dB worse
> than at 550 Hz bandwidth. After thinking about it for a moment, I
> realized it made perfect sense.
>
Not sure if it makes sense. My experience is that the signal and noise are
both attenuated or boosted together and the S/N remains the same.
73,
Barry N1EU
--
View this message in context:
http://n2.nabble.com/K3---A-case-for-wider-roofing-filters--tp1611557p1611617.html
Sent from the Elecraft mailing list archive at Nabble.com.
_______________________________________________
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
