If you only have two signals present you will see an extra signal between the
two signal plus weaker signal on each side of the main signal. It is the
difference between the two main signals that is the "key". If you have one
signal at 20MHz and one at 20.010MHz you will find a signal at 20.005MHz. If
you have several main signals you will see a complex picture of all the above
combinations. It will look more like a grass law across the screen.
You will also see the harmonics from each of the main signals.
Hans - N2JFS
-----Original Message-----
From: Grant Saviers <grants2@pacbell.net>
To: Tower Talk List <towertalk@contesting.com>
Sent: Fri, Aug 13, 2010 6:48 pm
Subject: Re: [TowerTalk] Fwd: Multi-Band Vertical Question
re: metal roof problems: If I look on a spectrum analyzer connected to
a separate antenna, what should I see? Where should I look re the
transmit frequency? Is cross modulation the problem or is it
intermodulation products? What kind of signals am I looking for?
Grant
KZ1W
> It's your (ham) neighbors who would hear it. :)
>
> 73, Jim K9YC
>
>
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