What An Antenna Noise Bridge Is

[BSugarberg]

Hello,

I have received a number of requests asking what a
antenna noise bridge does:

This Antenna Noise Bridge is a inexpensive ($20) alternative to expensive 
($200) antenna analyzers.

Chuck Penson, in the Heathkit book says:  "The HD-1422 is a very useful, 
though little understood, gizmo.  Unlike an SWR bridge, which tells you how 
well an antenna is matched to your transmitter, a noise bridge tells you 
what is causing any mismatch.  The HD-1422 is a tone modulated, broadband, 
noise generator coupled to an impedance bridge.  Using your station 
receiver, the impedance bridge measures the resistive and reactive 
components of your antenna.  The 1422 may also be used to pre-tune an 
antenna tuner, to tune quarter wave transmission lines, and to find the 
values of unknown capacitors and inductors.  All in all, a handy device."

HD-1422-A Antenna Noise Bridge	$20

2311 Digital VOM		SOLD

Thank you,

Bruce WA8TNC

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