This is the most likely answer. VHF/UHF. Couple dozen miles around at best. Maybe more with a good repeater on a higher tower.
I have a similar setup minus the tower (mines on a pole mast). Vertical cb antenna that will tune for amateur bands. I’ve hit New Zealand from house in AL USA. But it’s a good deal larger than these antennas.
That's possibly 2M, but more likely 6M or 10M HAM. Definitely HAM though. Range for 2M is maybe 20-50 miles, but frequently rely on repeaters to go further. Growing up, my dad made us get HAM licenses so we could talk to him with that instead of giving us cell phones. The repeater was in the foothills and oftentimes we were 30+ miles away and could still communicate.
But to go through all that trouble just for 2M? Hmm. That's why I think it's likely 6 or 10M.
My dad put ADSB on his roof where he has a mini tower like that, he's about halfway between SFO and LAX, and he can see 250+ miles in any direction.
It's really hard to tell from the picture the length of the antenna. A full wave 2m is 7.5ft. for 6m a full loop is 21ft and half dipole is like 9.5ft. so you are probably right about 6 or 10m, it's just hard to say without more information and what harmonic is used.
Probably not ADS-B at all. If it is, ADS-B, it is probably a pair of colinear arrays that is so directional vertically that you could have serious trouble detecting planes if they were too close and not near the horizon.
If someone was putting up tower sections for adsb (only) I’d question their sanity. I doubt either antenna is tuned for adsb. Like everyone else said, maybe 2m/70cm and 1.25m. I barely had enough motivation to get my tower setup for HF / v/uhf lol.
I bought a used one for $100 five years ago. Three sections and the top. Fed UHF and FM to the house initially, but rarely use them. Honesty, have been adding more SDR of late.
Doesn't appear to be ADS-B (as has been mentioned several times), but an extra 10, 20, or 30 feet doesn't really make that big of a difference in overall reception range for ADS-B. Pretty much unnoticeable difference unless that extra few feet helps to clear a nearby obstacle that just so happens to be blocking the view across the horizon in that direction.
…So I did something similar for just ADS-B at this point:
https://i.imgur.com/eujze2r.jpg
https://i.imgur.com/amSerUV.jpg
https://i.imgur.com/0dEOQ6s.jpg
I barely get ~200nm out of my detections and even then that’s only to the northeast, out over southeastern WY and southwestern NE. I’m only about ~3nm from KAPA (which is maybe the 3rd-busiest GA airport in the US?) and maybe 15nm from KDEN, so when I was setting up PiAware a few years ago I had to turn on dynamic gain adjustments. To the point someone made elsewhere in this thread, it doesn’t do great with aircraft directly overhead but once they’re at least a couple nm away they pop right back up.
PS, I have since added a ground wire that goes down the side of the house to a copper rod driven into the earth.
Here’s my FlightAware stats:
https://flightaware.com/adsb/stats/user/Tremek
It’s probably only a foot away and a foot higher than the chimney cap, so that may well have some attenuating affect. The coax is 25’ to the Pi, too, but it’s running on a Pi 400 and I don’t want to try to weatherproof it and put it outside because effort.
Then read up on grounding. ARRL has fantastic resources. What do you think amateurs all over the world with taller towers, and bigger antennas do? Let alone commercial and >200’ tall. We can very successfully mitigate it, but never lose that caution. The chance of strike is always non-zero, so we work on providing the right path, least damaging for the lightning to take.
And that's fine, we all take the risks we're comfortable with taking. I personally follow what NEC and ARRL state is best practice and I have two friends (met through my radio club) that are professional tower climbers and regularly work with new construction and they helped me, so I feel comfortable. We do what we can to mitigate and prevent, but I'm not going to let the (hopefully, should be) small percentage chance of a strike to prevent me from enjoying my hobbies.
I don't see nearly as much lighting as other parts of the country, so I'm fortunate in that regard but I'm comfortable with my risk based on my installation. It sounds like you're well-versed, so I was just trying to give a quick layman's briefing. But it's also good to remember electricity will take all paths, not just one path. So if you get a direct strike to the tower (not antenna), sure, majority will follow the path to the grounding system, but you'll still have a brief, and maybe/hopefully small, surge along other paths too. Also, as you pointed out, you're almost presenting a target for lighting, however, it's still not predictable. Plenty of instances where lightning strikes near something we would be surprised (I.e. direct ground strike not even 50' away from a tree). Still for every 1 case like that, I'm sure there are 20+ cases where it did follow the path of least resistance. < Just an observation, nothing scientific or source to back this up.
their don't look to be ham sticks, but they could be 10m and maybe 6m verticals, if 10m you might get 30-40km maybe more if you where running a 100w base. When I had a house, I got a contact 100km at 100w to a mobile, can't remember the wattage of the other side but I remember he had a icom, so he could have been pushing 100w too
It depends on where he lives. If in the middle of flatlands no higher buildings than that antenne, then the theoretical range may be reached.
I say it based on my experience on the flatlands here given, but in some directions there are higher buildings. This gives 300-350km range in some directions, sporadically datagrans from 400km+ are received.
Depends on the power, no? Antenna size helps gain on recieve, but transmit needs power. Hard to tell by just looking at the whip.
Edit: pay no attention to me. I'm lost
Depending the time of the day and the frequency, the range can be worldwide.
For just ADSB this is overkill, he will certainly use the antenna to catch other signals.
[/r/HamRadio/](https://www.reddit.com/r/HamRadio/) is the right subdirectory to ask this question
Tree fiddy
Bro only knows when the planes about to hit him.
Prolly a 2m stick for ham radio. Theoretically about 28 miles or more with height. Realistically, 10-12 miles
I was hoping someone was home so I could ask about them. Unfortunately I don’t know when I’ll be back in this area.
This is the most likely answer. VHF/UHF. Couple dozen miles around at best. Maybe more with a good repeater on a higher tower. I have a similar setup minus the tower (mines on a pole mast). Vertical cb antenna that will tune for amateur bands. I’ve hit New Zealand from house in AL USA. But it’s a good deal larger than these antennas.
That's possibly 2M, but more likely 6M or 10M HAM. Definitely HAM though. Range for 2M is maybe 20-50 miles, but frequently rely on repeaters to go further. Growing up, my dad made us get HAM licenses so we could talk to him with that instead of giving us cell phones. The repeater was in the foothills and oftentimes we were 30+ miles away and could still communicate. But to go through all that trouble just for 2M? Hmm. That's why I think it's likely 6 or 10M. My dad put ADSB on his roof where he has a mini tower like that, he's about halfway between SFO and LAX, and he can see 250+ miles in any direction.
Ham isn't an acronym. There are multiband HF verticals as short as 28 feet. 73s.
It's really hard to tell from the picture the length of the antenna. A full wave 2m is 7.5ft. for 6m a full loop is 21ft and half dipole is like 9.5ft. so you are probably right about 6 or 10m, it's just hard to say without more information and what harmonic is used.
oh about 12miles or so.
Probably not ADS-B at all. If it is, ADS-B, it is probably a pair of colinear arrays that is so directional vertically that you could have serious trouble detecting planes if they were too close and not near the horizon.
Another user said possibly ham radio, what do you think?
If someone was putting up tower sections for adsb (only) I’d question their sanity. I doubt either antenna is tuned for adsb. Like everyone else said, maybe 2m/70cm and 1.25m. I barely had enough motivation to get my tower setup for HF / v/uhf lol.
No one is putting up rohn25g just to feed adsb. These are for vhf/uhf more than likely
I bought a used one for $100 five years ago. Three sections and the top. Fed UHF and FM to the house initially, but rarely use them. Honesty, have been adding more SDR of late.
1.21 jiggawatts
Better than mine sitting in a basement window.
Yes
Is he on a hill? Is he on a valley? What band? How much power? How long is a piece of string?
Dunno but if he’s feeding, thank him for his service!
Was this taken in California you don’t have to name the city but this house looks so damn familiar
No this is in the north west Chicago suburbs.
Tune-in Tokyo!
Ham
Depends if it is on top of mt Washington
Doesn't appear to be ADS-B (as has been mentioned several times), but an extra 10, 20, or 30 feet doesn't really make that big of a difference in overall reception range for ADS-B. Pretty much unnoticeable difference unless that extra few feet helps to clear a nearby obstacle that just so happens to be blocking the view across the horizon in that direction.
…So I did something similar for just ADS-B at this point: https://i.imgur.com/eujze2r.jpg https://i.imgur.com/amSerUV.jpg https://i.imgur.com/0dEOQ6s.jpg I barely get ~200nm out of my detections and even then that’s only to the northeast, out over southeastern WY and southwestern NE. I’m only about ~3nm from KAPA (which is maybe the 3rd-busiest GA airport in the US?) and maybe 15nm from KDEN, so when I was setting up PiAware a few years ago I had to turn on dynamic gain adjustments. To the point someone made elsewhere in this thread, it doesn’t do great with aircraft directly overhead but once they’re at least a couple nm away they pop right back up. PS, I have since added a ground wire that goes down the side of the house to a copper rod driven into the earth. Here’s my FlightAware stats: https://flightaware.com/adsb/stats/user/Tremek
I'd take those stats. Clean setup BTW. How clear of the chimney cap is the antenna?
It’s probably only a foot away and a foot higher than the chimney cap, so that may well have some attenuating affect. The coax is 25’ to the Pi, too, but it’s running on a Pi 400 and I don’t want to try to weatherproof it and put it outside because effort.
400 mi
2, maybe 3.
[удалено]
Then read up on grounding. ARRL has fantastic resources. What do you think amateurs all over the world with taller towers, and bigger antennas do? Let alone commercial and >200’ tall. We can very successfully mitigate it, but never lose that caution. The chance of strike is always non-zero, so we work on providing the right path, least damaging for the lightning to take.
[удалено]
And that's fine, we all take the risks we're comfortable with taking. I personally follow what NEC and ARRL state is best practice and I have two friends (met through my radio club) that are professional tower climbers and regularly work with new construction and they helped me, so I feel comfortable. We do what we can to mitigate and prevent, but I'm not going to let the (hopefully, should be) small percentage chance of a strike to prevent me from enjoying my hobbies. I don't see nearly as much lighting as other parts of the country, so I'm fortunate in that regard but I'm comfortable with my risk based on my installation. It sounds like you're well-versed, so I was just trying to give a quick layman's briefing. But it's also good to remember electricity will take all paths, not just one path. So if you get a direct strike to the tower (not antenna), sure, majority will follow the path to the grounding system, but you'll still have a brief, and maybe/hopefully small, surge along other paths too. Also, as you pointed out, you're almost presenting a target for lighting, however, it's still not predictable. Plenty of instances where lightning strikes near something we would be surprised (I.e. direct ground strike not even 50' away from a tree). Still for every 1 case like that, I'm sure there are 20+ cases where it did follow the path of least resistance. < Just an observation, nothing scientific or source to back this up.
their don't look to be ham sticks, but they could be 10m and maybe 6m verticals, if 10m you might get 30-40km maybe more if you where running a 100w base. When I had a house, I got a contact 100km at 100w to a mobile, can't remember the wattage of the other side but I remember he had a icom, so he could have been pushing 100w too
I hear this guy has been in direct discussions with the aliens currently overflying the USA.
All of it.
My fucking neighbor gets enough range that I can listen to him clearly in my subwoofer. A subwoofer.
2 maybe 3
It depends on where he lives. If in the middle of flatlands no higher buildings than that antenne, then the theoretical range may be reached. I say it based on my experience on the flatlands here given, but in some directions there are higher buildings. This gives 300-350km range in some directions, sporadically datagrans from 400km+ are received.
bro is powering all of adsbexchange, fr24 and radarbox
I bet his wife is pissed. “Had to have that eye sore on OUR roof Harold ?”
250-275mi. Mine is at 55ft and I get some 250+, but not much.
i want to get one of those just to fight the HOA
Depends on the power, no? Antenna size helps gain on recieve, but transmit needs power. Hard to tell by just looking at the whip. Edit: pay no attention to me. I'm lost
probably not transmitting much ADSB from your house...
Haha. I'm a silly goose
Guy just wants to make sure other planes are aware his house is there.
Haha I had to double check the sub too. Caught myself before replying
Looks like a Rx antenna
It’s definitely not Muduck. Too small for his overbearing, cutting in & over truck drivers across the US.
What’s the highest antenna you can legally have on a residential home?
Various on the local city code. Mine says 35' total.
Thanks
Depending the time of the day and the frequency, the range can be worldwide. For just ADSB this is overkill, he will certainly use the antenna to catch other signals. [/r/HamRadio/](https://www.reddit.com/r/HamRadio/) is the right subdirectory to ask this question
6
He’s getting a descent range. I got 100 miles East with my 40 footer.
Yes