This is what the specs looked like for the OLD 7777 in the CM 2007 catalog:
catalog
http://www.bentonelectronic.com/disk...L%20MASTER.pdf
I was able to verify those specs when I did tests using some old model 7777s connected in cascade (series) to simulate strong signal overload.
http://www.digitalhome.ca/forum/1597002-post3490.html
Now, all we have that we can trust are the tests done by ADTech and others with the proper test equipment. Here are some overload tests done by ADTech:
AD Eclipse antenna with no preamp:
With Winegard LNA100 preamp showing moderate overload. The weakest signals are damaged first, because the rising noise floor from spurious signals created by IMD (Intermodulation Distortion) reduce their SNR:
With Solid Signal Blade preamp showing serious overload:
With a good quality overload tolerant preamp:
