[aprssig] New IGate Operator
Stephen H. Smith
wa8lmf2 at aol.com
Tue Jan 3 11:11:58 CST 2017
On 1/3/2017 9:52 AM, Jim Conrad wrote:
> Hi Pete,
> Thanks for the response. I understand the issue on saturation. I have set it up
> to only gate positions and with limitations. My thought process is that
> positions no matter the source of actual hams (not objects) should be reflected
> on RF which provides a coherent picture for the RF stations. At present there
> are only a few stations in my area using TCPIP. It also appears I am the only
> IGATE for a fairly large area. I monitor the RF side to make sure there is not
> any saturation (from my IGATE anyway).
> The Microsat WX3in1 has settings to prevent such issues. It is quite a well
> thought out device The default setup is as follows;
> APRS-IS to RF:
> Gate if source station heard by heard via RF - No
> RF Heard Buffer timeout 60min
> Maximum packets per 1 min: 6
> Maximum packets per 2 min: 9
> Maximum packets per 3 min: 12
Conventional "reverse-gating" (APRS-IS-to-RF) addresses MESSAGING between two
specific stations, not one-way position BEACONS to no one in particular.
The usual rule is to gate from IS-to-RF --ONLY IF-- the RF station being
addressed "has been heard recently and nearby". This usually means within
30-60 mins and heard either direct or only one digi hop.
How are you dealing with the issue of Internet-only APRS stations that are just
blasting out one-way beacons, and NOT addressing a specific station to be
tested for on RF?
Are you going to take the coordinates of each APRS-IS station's beacon,
calculate how far from your igate's position each one is, and then
reverse-gate only stations within say 10 miles of your igate?
Or are you going to use a "buddy list" of previously-authorized calls to limit
who gets gated?
Stephen H. Smith wa8lmf (at) aol.com
EchoLink: Node # 14400 [Think bottom of the 2-meter band]
Home Page: http://wa8lmf.net
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