SAN DIEGO, Aug. 19, 2021 (GLOBE NEWSWIRE) -- GBT Technologies Inc. (OTC PINK: GTCH) ("GBT” or the “Company”), is now testing - Near Vertical Incidence Skywave (NVIS) Antenna Technology for its Infinia ...
The author is a consultant in Carterton, New Zealand. This follows up his December article “Tuned Bandpass Filter Is Solution to Backup STL.” Many years ago, the active whip antenna and the active ...
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