4 ms·
Is there a COTS radio set I could use for non-line of sight communication in the mountains?
by BoorishBears 7y ago
Is there a COTS radio set I could use for non-line of sight communication in the mountains?
- jacquesm 7y agoI think Inmarsat makes a nice little unit ;)
- vvanders 7y agohttps://elecraft.com/products/kx2-ssb-cw-data-80-10-m-transceiver https://elecraft.com/products/kx2-ssb-cw-data-80-10-m-transc... is the de-facto backpacking HF rig, usually the inreach[1] and similar are good enough for most people and doesn't require a license (just subscription). [1] https://explore.garmin.com/en-US/inreach/ https://explore.garmin.com/en-US/inreach/
- teraflop 7y agoAmateur radio equipment in the so-called HF band can get you non-line-of-sight transmission. You'll need a really big antenna, and you'll need to be content sharing a few hundred kHz of spectrum with everyone else on the same continent.
- jimhefferon 7y agoYou can have a lot of contacts with a pretty minimal wire antenna, such as a dipole.
- JshWright 7y ago"Big" doesn't necessarily mean "heavy" or "bulky" though. A decent length of lightweight wire and a tree can get you a very long way.
- blendo 7y agoIn the US, if you have a General class ham radio license, you could do it on the 7Mhz frequency if your antenna is relatively close (less than 1/4 wavelength) to the ground. See https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&ved=2ahUKEwivkIrE79zoAhU0HjQIHUFnAYsQFjABegQIBBAB&url=http%3A%2F%2Fw4cae.com%2Fwp-content%2Fuploads%2F2016%2F10%2F40M-NVIS-Antenna-1.pdf&usg=AOvVaw1itMvyU5MVsdDqXpl-ye12 https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&c... At higher frequencies (such as the 432 MHz used in this trans-Atlantic contact), the radio waves will not be reflected by the ionosphere and will disperse.