Hello Everyone,
Last week, we had some wonderful things happen with our Tetra pilot.
1) We performed the analysis of Tetra vs. Analog performance at extreme ranges from the towers, and found several instances that when the Tetra digital first began to break down, that the Analog at that range was very scratchy and unstable to almost unusable! This is rather incredible, as the Tetra systems were transmitting about 10 Watts, and the analog was in the 25Watt range. One would think that more power is always better, but we have found cases where we have similar performance without the power penalty and exposure. As this is rather unbelievable, we are going to make a video of our observations to share with you all.
2) We took some portable radios and removed them from the Tetra base stations. We put them into DMO mode (direct without a repeater or base station) and performed conversations. This coming week, we want to work with a mobile in Gateway and Repeater modes, and see how well the signals replicate through the radio. Because this is all digital, the replicated signal should be much closer to the original source. Let's try it!
3) We assembled our real-world driving data, and compared it to a
propagation study, and found that the two data sets are quite similar. The real-world tests were better than the calculations, but then again, it is winter time here in Wisconsin, and the leaves are off of the trees. Signals will be dampened once the leaves return.
Take care, and I'll write more soon.
Christian
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