[DogGone]

Originally Posted by Ucdcrush

There is much good advice here:
LOU CASTLE - ARTICLES
and on his forum,
Modern Ecollar Training • Index page

　
　
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While most of what he says is dead on; some of what he says is inaccurate and misconstrued. Some of the advice is wrong from Lou Castle and he himself seems to be creating some myths because apparently he doesn’t fully understand all of what he is talking about.
　
Under his myths section; he claims that modern E. collars offer up to 50,000 random frequencies; I think that is in itself a misconception and myth.
　
With old technology you simply had to have the same frequency in the same broadcast tone to trigger a stimulation command. With more modern and more advanced/expensive technology uses much more advanced technology. Rather than a simple tone (audio frequency superimposed on the radio frequency) that often is created in nature or by other modern technology; newer and more advanced technology can require one or more binary codes be broadcast on a particular frequency before a stimulation command will normally be triggered; this virtually eliminates all bogus triggers.
　
It’s much like SETI has been scanning the skies for decades and has only once heard a binary code that seemed to be extraterrestrial.
　
I’m not sure if dog radio collar technology is fully using it yet; but there is frequency hopping technology that has two sets of binary codes. One set of binary code is to authenticate the frequency. The second set of binary code is to authenticate a command. This is the type of technology that is used by the most modern and most advanced military equipment. This helps prevent an enemy from jamming signals, hijacking signals, snooping, etc…
　
Anyway the 50,000 number that he came up with I don’t think is the number of frequencies; I think it is the number of binary codes that are commonly used. So there may be like 50,000 patterns of frequency hopping, and 50,000 command codes.
　
If you put a receiver collar in close proximity to an extremely strong source of electromagnetic radiation it could be possible to overwhelm the primary circuits and cause a bogus stimulation command or even fry the radio collar. So something like a high-powered CB, police/fire/air radio/radar or short wave radio antenna mounted a few inches or a few feet away from a radio collar could possibly inadvertently cause an unintentional stimulation.
　
Modern well.design expensive good radio equipment has very good shielding and is designed to reduce the odds of pulling in a stray signal is nearly astronomical if it is used properly.
　
There are some scenarios that have a lots of RF/EM radiation. Using an E collar on an aircraft carrier that is on maneuvers with active radar and radio transmissions would probably be asking for trouble. There also might be some problems in a SAR scenario where there is a lot of electromagnetic radiation from high-powered transmitters and from the area being painted and scanned by radar. It also may be unwise to use an E-collar in close proximity of an airport, its radar or transmission towers; radio station towers; TV station towers, under high tension power lines, etc… if you could hold up a fluorescent light bulb and if it lights up without being connected to wires; it is probably not a wise idea to use an e collar in that area. You might want to try carrying an AM or FM radio with you and if you get a lot of interference you probably shouldn’t operate the e collar in that area, while there is so much EM radiation. You probably should not operate an E- collar in close proximity of radiating x-ray, CAT scan or MRI equipment.