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Old 02-24-2008, 07:53 PM   #697
Kiwi
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Default Re: Independent tests prove lack of frequency hopping with XPS

Bruce,

I have a question that will likely show just how unknowledgeable I am with some of this.

On my scanner the Y axis starts at -100 and ends at 0. Its calibrated in 20 dBm increments.

How do I relate the wattage of the signal being received from that. Would Zero be 1 watt or is it not relevant.

You see a Spektrum transmitter placed 4 meters from the antenna on my scanner measures about -55 give or take a whisker. Is that 500 Mw or am I totally out of whack with this.

For anyone patiently waiting I have some snippets of information worth sharing I think and they can be in this thread until I get my Wi-Spy running again.

With Spektrum it always seems to look for two channels very well spaced apart. It does not look for a clear channel at either end, for example 1 and 11. But it always seems to look for something with five or six channels apart.

I had four radios running all at once last weekend and the amazing thing was they actually shared channels to achieve that spacing. For example one radio would take 1 and 6. The next would take 6 and 11. Then the third radio would take 4 and 9 while the fourth radio would grab 5 and 11.

Everything worked extremely well and there was nothing at all going on between sets. You just could not tell unless you had the equipment to see all this witchcraft going on.

The reason I have asked Xjet about the dBm levels is at first appearances it appears the XPS system is slightly more powerful. That is if what I am seeing is a true reference to signal strength.

FASST is a real beast to see working as it blasts across the scanner and really only leaves a bunch of dots to let you know where its been. XPS and Spektrum are very easy to monitor compared to the hopping frequencies.

Anyway guys I really do apologize for being slow at getting the simple stuff done. I was set to give it 100% this weekend when the darned scanner took the pip and stopped working. I'm sure I can fix it tomorrow morning when the guys are at work.

Murphies law once again.
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