New answers tagged digital-modes
1
I figured it out. In FLDIGI I had video IDS check marked under Configure/IDS/Video.
Here is the link to a video on YouTube that clearly explains what I needed to know.
4
Troposcatter is the common mode for beyond line of sight on the 10 GHz ham band when the band is not otherwise open, good for 100's of miles. A radio with just a few watts output power and a moderate sized dish (60cm or more) gets enough ERP for troposcatter.
For a few random references, check out:
Pages 64-70 of http://www.mike-willis.com/Tutorial/RT%...
0
Message sending is not part of DMR standard. Messages are transmitted in CSBKs, Control Signalling Blocks
0
There are actually two types of helical antennas. The other answers talk about a directional helical antenna, also called an end fire helical antenna.
However, there is also a broadside helical antenna, which is essentially a compromised (shortened) monopole. This antenna is omnidirectional. However, it is still not special (by itself at least) in ...
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