[aprssig] Idea WB4APR SK

Steve Noskowicz noskosteve at yahoo.com
Fri Feb 11 13:09:02 EST 2022

 I'm sorry to hear of Bob's passing, but after so many trips around the sun, news like this is, unfortunately, more common now.

I've been off-air for some years, except for a D72 on the desk, on a local repeater on low volume, reminding me there is still activity on the ham bands and the occasional email from this list. My need for things new led me to move on, most notably volunteering at the Woodstock, IL Challenger Center, aerodynamics study and stand up comedy.

I see some familiar names now, from the list.

Nostalgia reminds me that a D700 for sale some years ago awakened my interest in APRS and I learned that P was for Packet, not Position, probably from one of Bob's postings on the list.
I knew of packet, but hadn't been on it before.

Learning as much APRS as I could with my insatiable curiosity, I happily played around with this new toy om the mobile side and wrote an APRS Beginner Guide from the prospective OF a beginner, FOR a beginner that must still be floating around cyberspace.

Having this insatiable need for new things, I worked my way through Fox hunting, TDOA & Doppler and have an idea that I'll outline below as I was aware of Bob's early APRS dos DFing ideas.
Here's the seed of the idea that I didn't have the motivation and skills to pull off as new interests pulled on me, but that is very possible. I'll be surprised if it isn't already done.

Several Dopplers are put on towers around the county, feeding any of the computer controllable receivers. These receivers, using a second APRS channel receiver, can be tuned via APRS message from any operator. If a troublemaker decides to mess with any of the repeaters, someone sends the command via APRS for these to tune to that repeater input and take bearings on any carrier that appears, 24/7.
All these bearings are then easy fed back to a master computer via APRS and then triangulated into locations for all those carriers. All these positions are plotted on a map and we can see any mobiles moving along streets. After a hard day at work we come home, look at the map and see where stations are and have been driving ala, APRS.fi style.

I had learned about the program by Robin Lovelock (cc'd) out of England called GPSS that does this type of plotting from a moving vehicle..
He gave me a copy and a key to operate it, but other interests took me away and I never tried to take it further in some way toward the above idea.

Regards, Steve Noskowicz K9DCI
Science Vigilante     On Wednesday, February 9, 2022, 01:43:04 PM CST, Steve Dimse <steve at dimse.com> wrote:  

> On Feb 9, 2022, at 2:30 PM, John D. Hays <john at hays.org> wrote:
> Thanks for the mention, but to clarify - ARDC funds these types of projects, they do not create, run or manage them, that is left to the grantee such as TAPR or DARC.
> On Wed, Feb 9, 2022 at 10:56 AM Brian Webster <info at wirelessmapping.com> wrote:
>  An organization such as TAPR or ARDC would
> be a logical host for what Steve is suggesting. 
I'm sure TAPR would be willing to help any APRS group any way they can, but they are not going to take this on themselves either. 

Steve K4HG
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aprssig at lists.tapr.org
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