Volcanic ash is "mostly" SO2 (Sulfur dioxide). I'm not enough of a
chemist to know if SO2 is a polarized molecule, but that would be the
main thing that might block RF. I suspect not.
bp
<part15sbs{at}gmail{dot}com>
On 1/20/2022 11:35 AM, Chuck McCown via AF wrote:
I am sure the HF operators on the island have been very busy.
We are not at the minimum of the sunspot cycle but not at the max either.
I would expect that there is some 20 meter connectivity in the daytime
and plenty of 40 and 80 meter stuff after sundown.
I don't know how well RF would penetrate the ash cloud but the cloud
went away so even if it was killing coms during the eruption it
cleared up. I would expect that HF probably propagates the ash cloud OK.
Australia and New Zealand probably have the best paths HF wise to Tonga.
-----Original Message----- From: Nate Burke
Sent: Thursday, January 20, 2022 12:26 PM
To: Animal Farm
Subject: [AFMUG] OT: Emergency Ham radios
Watching the coverage of the Tonga Volcano, and the Fiber cable being
cut, and the ash blocking satellite communications, there were talks
about how there was no information getting in and out of the country.
Would HAM radios still work through the ash cloud? Providing they were
able to get power. Seems like someone would be able to talk to someone
else from there. Or is that how the 'limited information' was getting
out.
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