Utah County APRS

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  • I-Gate no longer running The KD7LRJ I-Gate is no longer running. I was unable to solve the problem of my machine putting hundreds of extra (sometimes duplicate, sometimes just WRONG) position reports on ...
    Posted May 27, 2009, 7:48 AM by Douglas B. McKay
  • Radio swapping I've switched radios (for now). The KD7LRJ digipeater/i-gate is now running on a Kenwood TM-G707A radio. I've had this radio for many (8?) years now ...
    Posted Apr 14, 2009, 12:14 PM by Douglas B. McKay
  • KD7LRJ I-Gate is back online I finally got the I-Gate back up and running. It's reading from the new (to me) KPC-3 and gating traffic to the Internet Stream (IS).In order ...
    Posted Apr 2, 2009, 7:35 AM by Douglas B. McKay
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Trying to map out the current state of APRS in Utah County, Utah


The LINDON Digipeater

Here's a link to the LINDON digipeater map.

This is maintained by Doug McKay (KD7LRJ) at his home.


The WA7FFM-1 digipeater / I-Gate

Here's a link to the WA7FFM-1 Digipeater map.

A few APRS users in Utah County

KD7LRJ-2 (Kenwood TH-D7A handheld mostly used on KD7LRJ's bicycle) .

KD7LRJ-5 (Byonics PocketTracker in AD0OR's jeep).

KD7LRJ-6 (Micro-Tracker AIO v1.2 - usually in one of my vehicles)

KB7M (Micro-Tracker 8000)

WA7FFM (?TinyTrack3?)

KB7DZO-1 (TinyTrack3 v1.00))

KB7DZO-5 (?Kenwood D-700A?)


I-Gate no longer running

posted May 27, 2009, 7:43 AM by Douglas B. McKay

The KD7LRJ I-Gate is no longer running. I was unable to solve the problem of my machine putting hundreds of extra (sometimes duplicate, sometimes just WRONG) position reports on the Internet Stream. It would work for a while, then start going nuts. This is probably just a configuration issue related to the software I was using (Windows Vista, UI-VIEW32, etc.), but since there are other I-Gates in the area that are doing a very good job, figuring this out was not worth the effort. Instead, I'm going to turn the equipment over to the local ARES group and work with them to put it to good use.

Radio swapping

posted Apr 14, 2009, 9:14 AM by Douglas B. McKay

I've switched radios (for now). The KD7LRJ digipeater/i-gate is now running on a Kenwood TM-G707A radio. I've had this radio for many (8?) years now and its doing great for APRS! I wired up a short 6-pin DIN plug to a DB-9 connector and to my amazement it worked the first time (not a very common occurrence for me :). I don't know if it will be any better than the old GE Phoenix SX I had been using, but at least now I will have the option of using a frequency that isn't already programmed into the radio should the need arise.

With this radio change, I have also changed the configuration of the digipeater somewhat. I decided that it was too messy using the TNC in a split personality mode (RF vs. Internet).  So now I'm back to the original way of having UI-View32 control the TNC completely. It runs in KISS mode and without control from the computer, it won't digipeat at all unless I manually change it back. I know that it is more likely to go down from time to time, but now that we have WA7FFM-1 back online (thanks Dave!), it won't be so bad. The CPU is backed up by a (relatively small) UPS, so short problems won't affect it. The radio is connected to plenty of backup power (about 72 hours with a 25% duty cycle at 50 watts or over 2 weeks on receive only) should the mains go down and I need to use it for voice operations.


KD7LRJ I-Gate is back online

posted Apr 2, 2009, 6:57 AM by Douglas B. McKay

I finally got the I-Gate back up and running. It's reading from the new (to me) KPC-3 and gating traffic to the Internet Stream (IS).

In order to try to make it more stable, there are two sides to things now. The digipeater side is running completely on the TNC as it has been for the past several months. I had to tweak UI-View a bit in order to make it leave the digipeater settings on the TNC alone while still being able to move traffic to the IS as LINDON instead of KD7LRJ. So the other half of the equation is the I-Gate side which shows up on the IS as KD7LRJ.

One benefit of running in this configuration is that if the computer behind the I-Gate portion goes away, the RF side continues happily without noticing any difference. This is much better than before when running in KISS mode where UI-View had complete control (which, undeniably, had a few benefits) and everything came to a grinding halt whenever anything on the computer had a problem.

I also moved the radio to a better antenna (8' vertical instead of a discone) and it now has about 150 AH @ 12 V of battery reserve backing it up. I'll be tracking its power consumption over the next little while to see how much it actually uses (using my handy Power Analyzer Pro).

My MT-AIO settings

posted Mar 18, 2009, 6:59 AM by Douglas B. McKay   [ updated Mar 18, 2009, 7:21 AM ]

These are the settings I use in my MT-AIO APRS tracker from Byonics. They work for me and how I use the tracker. Your needs may be different. The .TT3 settings file for use with the programming software can be downloaded from the link below.

These the primary settings (right switch position):

These are the secondary settings (left switch position):

Lately I've been driving around with it using the secondary settings above. Here's a good track to look at to see how these settings worked on a recent trip: http://aprs.fi/?call=KD7LRJ-6&dt=1236988800&mt=m&z=11&timerange=3600

No, I didn't lose any $ at the race track, two of my sons were attending a driving course: http://www.driversedge.com

2008-11-23

posted Jan 19, 2009, 6:50 AM by Douglas B. McKay   [ updated Jan 19, 2009, 6:52 AM ]

Got my digipeater back on the air. More info in my blog.

2007-03-07

posted Jan 19, 2009, 6:46 AM by Douglas B. McKay   [ updated Jan 19, 2009, 6:52 AM ]

Last night at the UCARES Interface meeting, I gave a presentation on APRS.  I listed a few URL's for people to try out.  I got one of them wrong (UI-View.org, not .com).  Here's the complete list:

If I forgot any, call and let me know - I haven't downloaded the picture I took of the whiteboard yet and I'm going from memory (uh oh!).

2006-09-27

posted Jan 19, 2009, 6:46 AM by Douglas B. McKay   [ updated Jan 19, 2009, 6:51 AM ]

I'm looking into the possibility of moving the digipeater to a new (better) location.  AD0OR is currently pursuing the details.  We'll let you know more soon.

2006-08-10

posted Jan 19, 2009, 6:45 AM by Douglas B. McKay   [ updated Jan 19, 2009, 6:48 AM ]

Map of Utah County centered on the KD7LRJ digipeater. 


2006-07-27

posted Jan 19, 2009, 6:41 AM by Douglas B. McKay   [ updated Jan 19, 2009, 6:47 AM ]

The KD7LRJ digipeater in Lindon is offline due to equipment troubles.  Someday when I take the time to fix it, it will come back up. 

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