You could make an educated guess.  At resonance, the impedance is not 
necessarily 50 ohms, although it is likely to be somewhere between 25 and 
100 ohms.  Thus I would guess that the null might not be very sharp.  It 
would still be worth trying.
73 -- W3IUU, in Ocean City, NJ

-----Original Message----- 
From: Steve Forst
Sent: Thursday, August 29, 2013 6:09 PM
To: [log in to unmask]
Subject: Re: MFJ Noise Bridge General Quiry

I know the current thread on  using a noise bridge deals with adjusting
an antenna tuner, but  couldn't it also be used to find the resonant
spot on an antenna that is resonant out of band?


73, Steve KW3A