I've just run my VARA APRS igate GM4HYG-2 on 40m for 24 hours. so that's why I'm not on your map.
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At night stations from the US, Canada and St Lucia were heard with my transmissions being igated in the US.
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Unfortunately during daytime the channel is occupied by strong European SSB stations so nothing can be heard and my VARA transmissions cause QRM.
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The reason we tend to use 30m for HF APRS is that it's a CW/data only band with no contests.
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I get the argument for the better daytime NVIS on 40m but if you have a few igates say 1000 miles away then you have adequate coverage running mobile with a typical mobile whip.
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Good to try out 40m but I'm going back to 30m!
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73, Chris GM4HYG
