Tom,

The noise bridge works very well in getting your SWR down to 1-1.  The 
really nice thing about the MFJ212 and the VEC512 is that you can transmit 
with the noise bridge in line with a power of up to 300 watts.

I would not use your 480 internal tuner if your running an external tuner. 
That combination could cause some really high voltages at the antenna 
connector that could pop some components.

Howard has got it right on how to find a resonant frequency with the noise 
bridge.

Bob, K8LR, [log in to unmask]

----- Original Message ----- 
From: "Tom Behler" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Wednesday, January 01, 2014 9:49 AM
Subject: Using MFJ Noise Bridge To Determine Antenna Resonant Frequency


Hi, again, everyone.



Sometime late last Summer, someone on the list suggested that an MFJ 212
Noise Bridge might be useful for determining the resonant frequency of an
antenna, even one that might be resonant outside the ham bands.



Is this possible, and, if so, how exactly might that be done?



Tom Behler: KB8TYJ