These have a similar method for assigning the channel designations. It can be as simple as taking an HF or VHF transceiver and running it through a transvertor to get to the higher band or you may need to put together components. I think about what half a wavelength on this band means. Amateur use of these frequencies should be first coordinated with the National Science Foundation esm nsf. However within North America it is a popular band as it falls just below 1 GHz and it has some useful propagation properties. These are commonly called the " WARC bands ".
However, a much stronger thermal inversion is often required than is needed for ducting in the 2-meter band. E mi s sion Bandwidth. This means that Antennas specifically designed to work on both bands are common. These are commonly called the " WARC bands ". Currently, it is used by amateurs for a variety of purposes.
23 cm band and WRC | AMSAT-UK
Similarly, an operator chatting across town on 70 cm could interfere with a satellite hundreds of miles away and not know it. In some parts of North America, non-standard repeater offsets may be used, which will be indicated in the repeater directory. Stay out of the weak signal, ATV, beacon and satellite subbands. Merging the two technologies facilitates a radio communications system that maintains a narrow band base signal to ensure for maximum usable range within a given dB power budget, comparable to traditional fixed frequency narrow band FM radios, but with the added benefit of wide band digital security and privacy provided by the frequency hopping spread spectrum algorithm.
Description: Most of this non-FM operation can be easily interfered with by signals from other users. Retrieved from " https: Within any region, the offset will be usually be the same on all repeaters. The only new mobile 1. The Amateur Service allocation in this band is on a secondary basis, with aeronautical radionavigation and several other services primary in the United States Table of Frequency Allocations.