[BC] IBOC question

[R J Carpenter]

From: "Craig Healy" <craig.healy at hotmail.com>

> One thing I have never seen addressed in the IBOC discussion is 3rd 
> order
> terod interference.  Most transmitters I've seen located near each 
> other
> have some 3rd order products.  Sometimes this can be a significant 
> level,
> though often masked by nearby signals.  One example here in 
> Providence is
> .the product of a co-located 94.1 and 95.5 site.  That creates a 
> spur on 92.7
> that is quite noticeable in the vicinity of that site.

Are sure that the intermod is in the transmitter(s), not in the 
receiver?