With some of the DSP methods on amateur radio today using sound cards, you 
would be surprised how much fade you can take and still decode data. Modes such 
as PSK31, FT8 and others can still decode when you cannot actually hear the 
signal from the speaker. They are very spectrally efficient compared to even 
SSB voice. As Chuck mentioned if you are sending low bandwidth data it's a 
viable option.

Thank you,
Brian Webster


-----Original Message-----
From: AF [mailto:[email protected]] On Behalf Of Chuck McCown via AF
Sent: Saturday, December 19, 2020 11:45 AM
To: Matt Hoppes
Cc: [email protected]; AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] High-Frequency Traders Push Closer to Light Speed With 
Cutting-Edge Cables - WSJ

Multi freq diversity, they may be even using some kind of noise modulation 
with a fiber backup.
High power CW can almost always hammer through on some freq.

Red cross has a handful of channels that almost always seem to work.

-----Original Message----- 
From: Matt Hoppes
Sent: Saturday, December 19, 2020 9:41 AM
To: [email protected]
Cc: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] High-Frequency Traders Push Closer to Light Speed With 
Cutting-Edge Cables - WSJ

I get that. It’s all good until you’ve got a million dollars tied up in a 
buy deal you want to dump and you get fade.

> On Dec 19, 2020, at 11:39 AM, [email protected] wrote:
> 

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