[TowerTalk] Antenna analyzers

[Steve]

There is a review of antenna analyzers posted on the ARRL web site, it 
will be published in the April QST. Have been thinking about acquiring 
one of these analyzers.

I've seen postings from time to time regarding the detrimental effects 
on these devices from nearby AM broadcast stations. Is there a rule of 
thumb or experience regarding how far from AM broadcast stations one 
needs to be in order to avoid problems?

Thanks.

Steve K8JQ