Re: Igates and their use of digi paths

Lynn Deffenbaugh

On 6/19/2020 6:38 PM, Greg Depew wrote:
Can you give a more complete description of what all is involved?

KB3KBR-11 is what station?  Software, TNC and radio please.

11 is a Yaesu Ft1d

Same for -4 (a WIDE1-1 digi) 

4 is a fill in digi , TinyTrak 4 with GPS and and FT 8800 in a go box programmed to only respond to Wide1-1 and it's own callsign 

Same for -1 (presumably a WIDE2 digi)

1 is APRSIS32 via sound card Signal link into an Ftm 350and is an igate and digi that responds to Wide1-1 and Wide2-2 

Same for the IGate and please include callsign-SSID with the other 3 pieces of the puzzle.

And some idea of who can copy who directly.  Can -1 copy the IGate directly or does the IGate need the boost from -4 to get to -1?  

1 is the igate, 4 is my mobile fill in that I'm using to get 11 back to the igate 

You've already mentioned that you can't hear -1 indoors, but only -4.  Can you copy the IGate indoors?  

When I'm at work inside our 911 center our grounding halo blocks just about everything. 4 is sitting in the truck in the parking lot and can hear 1 and 11. 11 can only hear 1 if it's out side and its iffy if 1 can hear 11 without either holding the antenna in the or more power.

If not, then can we assume the IGate is actually remote from your QTH, but -1 is local?

So, with that final line, it would seem that if you're IGate is using a WIDE1-1,WIDE2-1 path, then -4 will copy it and repeat it locally so that -11 can copy the response at the 911 center.  Without the WIDE1-1, -4 won't digipeat and -11 won't copy it.

The big issue you have is that the -11 HT can't copy the IGate directly when at the 911 center, and apparently there's no bigger digipeater that will digipeat the IGate and be copied by the -11 HT.  No amount of pathing is going to solve an issue of a marginal receiver (the HT) at some distance from the IGate without strong coverage.

But a WIDE1-1,WIDE2-1 path on the IGate should trigger the -4 digipeater to deliver a stronger packet to the HT.

Anyone have any better suggestion?

Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32

PS.  An external antenna that you can connect to the HT inside the 911 center would likely also solve your issue.  Apparently the -4 has bigger ears than the HT or it wouldn't copy the IGate while sitting in the parking lot.

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