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Re: 30 Meter VARA APRS - Test Run Today!


 

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On 1/6/2025 8:27 PM, Michael - NA7Q via groups.io wrote:
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Messaging is one the key things in APRS for many of us. So tracking and messaging are what we judge by. They are not necessarily equal due to the VARA speed differences between messages and basic position reports.

One major problem with 30m and the current network is that igates are?NOT timed. So every 2 way igate keys up at the exact same time causing a lovely clash of gibberish. On 40m, we are timed so that this doesn't happen. This significantly improves IS to RF gating.

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How do you assign the timing?? ? I can see that the usual VHF scenario of a limited number of igates in a given region, and FM capture most likely ensure one wins out over the others.? This would not be at all like what happens on HF.??

How large an area, and how many igates are involved in your 40M network???? Would there be any feasible way to extend this to continental scale?


I have to admit that my experience with APRS messaging on HF has been limited exclusively to radio<-->radio;? not radio<-->Internet.? The? multiple-stations-keying-up-at-once?? problems go away when addressing a specific call sign for RF-to-RF messaging which I have done over continental ranges on cross-country road trips many times. ??



Stephen H. Smith??? wa8lmf (at) aol.com
Skype:??????? WA8LMF
EchoLink:? Node #? 14400? [Think bottom of the 2-meter band]
Home Page:?????????

New? 30 Meter?? APRS-over VARA? Frequency
As of 1 Jan 2025.?? Details Here:
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- APRS over VARA? --
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"Studio B" Ham Shack on Wheels
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