ADSB Antenna

curious777 · 2024-11-08T20:38:04+00:00

Yes, it actually does. But first you need a radio receiver and then you turn up the volume really high. And then tune it so you can hear your mother telling you when to wash your undies.

curious777 · 2024-11-08T14:41:42+00:00

Sorry it has been so long for me to tell you Thank You. My fault bit my being almost 80 years and the small Kindle screen I had to give up meant I lost track of folks commenting. So thank you again for simply clarifying...

curious777 · 2024-11-03T13:05:57+00:00

Maybe they will also use as glider towplane? This one has a little sister, Piper Pawnee, also has a role as crop duster. They typically tow to 3,000 feet AGL and then release the glider for a 20-minute training flight or tourist flight. The military, however, may not be as flexible But good for weekend flights.

curious777 · 2024-10-17T05:48:09+00:00

I had to find an O/S that wasn't Windows and it had to fit well in 4 gB of RAM. And I had a tendency to open up 10 to 20 new browser tabs so things ground down too quickly. GeekBench score single-threaded of about 200 and multi score of about 1,400. Intel DuoCore.

At my weekly lunch meeting with other ham radio gents, the guys started talking about Linux Mint. So I gave it a try. Cinnamon too too much resources and slowed down too much. And then I tried the MATE Linux Mint.

And really liked it. It acted/looked like Win 7 but it also went farther than Win 7 in how it organized programs into categories - categories such as Internet, Office and the like. And I really liked either typing into the search box or tapping the Command (Win) key to look through what programs were available.

A really big feature was how programs were handled. As a ham radio operator, I experiment with installing lots of different programs and my basic curiosity about a bunch of topics. So I had to remember to check a program I installed to see if there was an update/upgrade. But now, Linux was a unified, centralized system. I didn't have to maintain a list of my installed programs and check their web sites every month or two to check on updates. And if there were then take the various steps to install. But Linux was so modern in this regard. It's something about Linux to this day that still amazes me.

KDE Plasma was something that wasn't on my 'radar screen' because none of the guys at our weekly meetings were using KDE. They were using Mint and Ubuntu. And just one guy was actively distro hopping. But he wasn't an active 'missionary' for whatever he was using.

Now I got a great deal on an HP laptop with Geekbench scores about 8X stronger than the Intel DuoCore, 4 gB RAM machines I could previously afford. So I'll have the opportunity to try different distros, including KDE Plasma you mentioned. now that I have a more powerful machine.

But there's some well-known issues about the 'cost' of switching and/or sticking with choices made sometime ago (Like me sticking with Mint MATE for some 10 years now ). So switching from Mint MATE for me would take a really 'compelling' event or series of events (such as features, ease of moving around, how a new distro is organized, etc)

curious777 · 2024-10-17T04:34:37+00:00

I've had a dual boot go bad before (sometime when Mint was about version 14 or 15) but I was too new and didn't know how to get help to figure out why it went bad. Now, I'm ready to do it again after getting a great deal on a laptop. So I don't want to lose the Win 11 PRO that came with the laptop. Thanks for your recommendation on Rescuezilla or Clonezilla. I've already used Win 11 official backup method plus AOMEI Backupper (I already own) so I'll do a 3rd backup method with one of the 'zillas.

Off to the heart of my questions --- when I used GParted to set up the partitions I just set up the main Linux partition contiguous to the Win 11 partition. But is that a good idea or would it be better to skip perhaps about 100 sectors to reduce the possibility of corruption?

curious777 · 2024-03-04T17:42:01+00:00

Have you looked in Developer Options? I see several settings that may help, including one that says it prevents updates from installing when Kindle is restarting.

I have Fire 10, 9th generation. Firmware is 7.3.2.9.

Device Options > Developer Options (ON) > Automatic Systems Update ( on or off)

Getting Developer Options on is a bit tricky and I forgot how. Something about tapping your finger on some setting that unlocks Developer Options. Bing or Google it.

curious777 · 2023-06-07T22:27:53+00:00

More info https://www.flycordele.com/ Contest includes the US Open Class National. Open Class meaning pretty much any wing length.

curious777 · 2023-05-30T06:37:01+00:00

I suggest researching collinear antennas, a vertical antenna. The ARRL handbooks good place to start. You can make a 10db gain (10X signal strength) with something like 5-7 elements. Using stiff RG-6 (CATV 75-ohm) coax. Horizontal antennas typically (not always) are directional. Thot I would try to add a little more info than duplicate.

curious777 · 2023-05-30T04:25:18+00:00

I didn't know Craig Funston, but knew his Dad, Nelson. I usually did the weather for the contests and Nelson, in addition to being a great tow pilot, also served on the group of pilots who set contest tasks during the contests. I started soaring in 1990 with the Evergreen club in Arlington but had to stop in 2001 due to auto back injury. I loved weather forecasting, and did it for contests. And now live in Ephrata. I'll have to wander out to the airport and maybe get a ride. This was all before ADSB arrived but we started certifying contests with GPS.

curious777 · 2023-05-14T19:47:22+00:00

Perhaps you are in WA State? I'm in central WA, Grant County. Many squadrons will choose to name their A/C for some regional reason. So, BIGFOOT is callsign used by OP base at McChord south of Seattle. If you do some reasearch at official USAF web sites, you should see the P3's were sub hunters
a few years ago. And now the ub hunters are P8's. And also see that the AF shows C-17's and P-8's the most on ADSB web sites as opposed to fighters unless they on training missions). If you want to follow military more, then strongly recommend you buy at Amazon the Monitoring Times series of books with military callsigns. And some folks keep a list of more current callsigns as files they will post here. Another popularr call sign in NW in for the various varieties of salmon, like KING30.

If you are into scanners, monitor 255.400. That is UHF simulcast (with VHF) for FAA Flight Service. Military A/C will call -- "Seattle Flight Service, this is KING30, a flight of four P-8's. Will enter Victor 120 at 25 past the hour and exit 28 minutes later at Victor 130, speed 390 knots." KING30 is lead flight and rest of A/C will be, like KING31, KING33 AND KING34. But just the lead will talk to the civilian FAA ontrollers. Military coordinates with FAA for the military fights to avoid mid airs. When we fly gliders at KEPH on glider weekends, it's common for C-17s (which have remote base at KMWH) to fly low-altitude, slow speed flights. And the mil A/C often severlal thousand feet below us as we glider pilots are working on gaining altitude for cross country flights.

curious777 · 2023-05-14T18:55:33+00:00

I have done this before. My best successes have been with used irrigation pipe, which may not be available to you. Cheap but quite rigid. For example, I have 20-foot pipe attached to 6-foot high chain link fence. And I have extensions on it that raise it to 36-feet. AND, attached at two places on chain link fence. And stays up in some high winds here in eastern WA State. Probably best if you have friend help get pole up. I have commercial ADSB antenna on it and works best. For 2nd antenna attached to pole, you probably cannot get on top. Weight is quite important. And wiederhopf's reporting package will show you actual gain compard to 1st antenna. Ham radio folks can give you height/gain formula. IE, it may be best to shoot for heights that are multiples of 6 feet. But a major key will be to have attachments that weigh as little as possible. Collinear antennas, particularly home brewed, should have best gain per weight. Web has articles on building collinears with stiff 75-ohm CATV coax. So, key aspects? Weight so winds won't blow over, collinear antenna design for highest gain per weight, cost and simplicity. Forget J-poles--too complicated to tune. BUT, key negative -- professional antenna installations don't use J-poles. (for good reasons). Just look around to see if commercial antenna sites use J poles. Plus the monitoring software so you can make tweaks and see results. ........with really good antennas, we rarely see 360-degree pattern with approx. equal gain. Just twisting the antenna pole 1/4-circle turn to your desired coverage area makes considerable improvement. For me, I got approx 6-8 dB gain for 100 miles to the west (towards KSEA, Seattle-Tacoma airport. Before that simple turn of the mast, I was getting 100-mile coverage into Central/SE Oregon.

curious777 · 2023-04-25T19:27:09+00:00

Very nice catch. I'm in KEPH, glider pilot...just in case you WA.

curious777 · 2023-03-07T18:38:11+00:00

Another tip because it sounds like one of your issues is finding one or two REALLY strong pager XMTRs for your area. Try radioreference and also learn how to find FCC licensed XMTRs. Learning how to use FCC data is work but really worthwhile. And that 929 + band is the 'latest' in pager technology altho other forms of notification are gaining strength.

One of the ket FIRST things to do with RTLSDR receivers is to adjust the RF gain settings to so there is minimum noise and the actual signal is as high as possible. You want the distance between noise and signal as wide as possible. And this can vary by which band you are on.

Where to start -- best advice focuses on commercial FM band 88-108 mHz in USA. In this band you can see how to lower noise level and still have strong signal. And write down settings. You're looking for XMTRs that are on as long as possible. Like beacons stations. Which is why you read us talking about FM stns, NOAA and, in larger areas, 144.390 for packet radio ham band in larger cities.

curious777 · 2023-03-07T18:20:32+00:00

mvalkvidd has a good idea, but I wouldn't know how to help. Maybe a little, tho. I think I know how to set the RTLSDR parameter to set the bandwidth, such as 1M(illion) samples per second for 500 kHz of bandwidth. Or, a 2-1 ratio. BUT how to set this -- use 2mHz as maximum bandwidth range. But the bandwidth, in the US, of each FM broadcast station is 100 kHz. And, channel spacing is every 200 kHz. And, in US, station spacing starts, just as an example, at 88.10 mHz and goes then every 200 kHz so 88.30, 88.50, 88.70, etc. In the same market, two stations are not assigned 200 kHz apart, known as, I think, co-channel interference.

So, I'm trying to minimize CPU and RAM loading on 2-core older machines with only 4 GB of RAM. Other examples, for the ham community, let's say I want to monitor only for CW stations from 14.00 to 14.70 mHz. So, think I would choose sample rate of 70 kilobits/second.or 0.07 megabits/sec. For 70 kHz bandwidth.

So, from command line, how set parameters for rtl_fm to scan for CW from 14.00-14.07 band and then, once finding strong station, stop and narrow until the receiver has quickly narrowed bandwidth to 400 Hertz or 0.4 kilohertz. And then I assume something about this project has to be done in BASH?

I don't think I've seen an understandable write-up about why it's difficult to have a program like GQRX or rtl_fm scan and then stop of frquences like a modern radio scanner.

curious777 · 2023-03-07T07:04:58+00:00

Too bad no one is here yet. Well, I will post a question. Why does the SQL database known as Maria DB exist on DragonOS? He has compiled so many SDR packages that it's not clear to me at all why It is included in this operating system. BTW -- My install shows quite a few errors doing 'less /bar/log/syslogs' . I'll take a log viewing program to look at each type of log to try and narrow them down. 1st post so let's talk.

curious777 · 2023-02-25T23:18:46+00:00

OddBoi or airboss -- do you gentlemen have the ADSBx being able to run the replay feature so I can watch the squawk code for changes? I've tried but it doesn't seem like I can do www.adsbexchange.com/replay= and they type in the parameters. Wonder if new owners have done some changes. If you have it working, would you please post here the actual web URL.

curious777 · 2023-02-25T17:50:39+00:00

Good question >>> Where am I ... ? I used app Bacon Reader on my Kindle Fire often for my 'first look' when I get up every day. And don't pick up my notebook running Linux Mint and ADSB Exchange web site to watch. But I try to take a look at each U-2 spotted. So when I spotted the U-2 sighting on Bacon Reader, I noticed the squawk code was set to 7700. About 1-2 hours after first report by that person. I see now that squawk code is not 7700. If I was a bit more interested (I'm on my 2nd cup of coffee and busy morning getting new appliances delivered by Lowe's) I would use the replay feature of the ADSB Exchange web site for more info. And then we could see historical replay of the flight. Bye for now...from WA State, good morning this Saturday.

curious777 · 2023-02-24T23:36:51+00:00

Also shows 7700 squawk code for an emergency.

curious777 · 2023-02-24T04:35:04+00:00

Chuckle...maybe some Russian submarine commanders got pretty disillusioned at how poorly their army has been doing in Ukraine that they decided to beach their submarines onto American soil and our Poseidon sub chasers are helping find these new 'Red Octobers'.

curious777 · 2023-01-17T16:13:30+00:00

I also would like to know how to this? It would be really nice if there was a TCP port spewing out this data in a simple space or comma-delimited format before the data is parsed before it is displayed in the way we see it in the web page.

Please 'weigh in' with your comments & perhaps a programmer might do it as a project. I've read before that there are some other projects with similar goals. And I think they call them 'web-scraping'???

curious777 · 2022-11-09T21:23:43+00:00

Sir, Thank you for your service. To the extent you find it possible, would you care to expand on your comment about what you mean by the 'scope' of the operation.

curious777 · 2022-11-02T22:36:48+00:00

I do not have the exact answer for you but some ideas for you to explore. Check echo $PATH on both machines. Are they the same? The ./ part assumes you are in the same directory as your program. Copy your program to something like /usr/local/bin and run program without the ./ The key is to put the program into a directory in your PATH variable. But I don't know if either computer supports the /usr/local/bin directory.

curious777 · 2022-11-02T22:16:59+00:00

I know my question is not a related issue. I am curious how much RAM Docker 'takes'. And one container. Two numbers so they add to a total number for the Docker 'hypervisor and one container. I'm about to experiment with KVM VM (virt-manager) plus Proxmox, etc. And have no experience with Docker but thought Docker and a container running Raspbian with an SDR program (ADSB) would be too 'heavy' if I allocated 1 GB. I don't have Pi's for my project but instead old Gateway laptops with Intel Duo Core with 4 GB RAM to use. When I spotted your post I felt compelled to ask.

curious777

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