[Amps] low pass filter fail

Jim Thomson jim.thom at telus.net
Tue Apr 29 06:26:25 EDT 2014



-----Original Message----- 
From: Ian White
Sent: Tuesday, April 29, 2014 3:14 AM
To: 'Jim Thomson' ; amps at contesting.com ; 'Benedikt Sveinsson'
Subject: RE: [Amps] low pass filter fail

>
>##  Do you really require a LP filter ?

Nope - you should only need to attenuate the harmonics of the driver
signal, so a harmonic notch filter should be fine. (Any non-harmonically
related spurious signals must be coming from the driver, and should be
removed before the reach the PA.)
73 from Ian GM3SEK


##  whoa.  The amp generates harmonics.... it doesn’t amplify harmonics from
the driver.

Jim  VE7RF 



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