#antenna — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #antenna, aggregated by home.social.
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RE: https://mastodon.online/@aslankemalaslan/113691047956407024
Bu RTL SDR Dongle ile ne anten sorunu yaşamıştım!
Sorunu hâlâ çözemedim.
Kullanmadığım için artık sorun olmuyor! ツ
En kötüsü de Kısa Dalga (SW) yayınlarını dinleyebilmek için odamın ortasına çaprazlama 5 metrelik Şerit Metreyi boğazımın hizasında asmak olmuştu!
Yerinden kurtulup boğazımı kesecek ve kan kaybından aptalca öleceğim endişesi ile o anteni kaldırmak zorunda kaldım!
Bir daha da bu SDR Dongle ile Kısa Dalga (SW) da iyi ses duyamadım!
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RE: https://mastodon.online/@aslankemalaslan/113691047956407024
Bu RTL SDR Dongle ile ne anten sorunu yaşamıştım!
Sorunu hâlâ çözemedim.
Kullanmadığım için artık sorun olmuyor! ツ
En kötüsü de Kısa Dalga (SW) yayınlarını dinleyebilmek için odamın ortasına çaprazlama 5 metrelik Şerit Metreyi boğazımın hizasında asmak olmuştu!
Yerinden kurtulup boğazımı kesecek ve kan kaybından aptalca öleceğim endişesi ile o anteni kaldırmak zorunda kaldım!
Bir daha da bu SDR Dongle ile Kısa Dalga (SW) da iyi ses duyamadım!
-
RE: https://mastodon.online/@aslankemalaslan/113691047956407024
Bu RTL SDR Dongle ile ne anten sorunu yaşamıştım!
Sorunu hâlâ çözemedim.
Kullanmadığım için artık sorun olmuyor! ツ
En kötüsü de Kısa Dalga (SW) yayınlarını dinleyebilmek için odamın ortasına çaprazlama 5 metrelik Şerit Metreyi boğazımın hizasında asmak olmuştu!
Yerinden kurtulup boğazımı kesecek ve kan kaybından aptalca öleceğim endişesi ile o anteni kaldırmak zorunda kaldım!
Bir daha da bu SDR Dongle ile Kısa Dalga (SW) da iyi ses duyamadım!
-
RE: https://mastodon.online/@aslankemalaslan/113691047956407024
Bu RTL SDR Dongle ile ne anten sorunu yaşamıştım!
Sorunu hâlâ çözemedim.
Kullanmadığım için artık sorun olmuyor! ツ
En kötüsü de Kısa Dalga (SW) yayınlarını dinleyebilmek için odamın ortasına çaprazlama 5 metrelik Şerit Metreyi boğazımın hizasında asmak olmuştu!
Yerinden kurtulup boğazımı kesecek ve kan kaybından aptalca öleceğim endişesi ile o anteni kaldırmak zorunda kaldım!
Bir daha da bu SDR Dongle ile Kısa Dalga (SW) da iyi ses duyamadım!
-
RE: https://mastodon.online/@aslankemalaslan/113691047956407024
Bu RTL SDR Dongle ile ne anten sorunu yaşamıştım!
Sorunu hâlâ çözemedim.
Kullanmadığım için artık sorun olmuyor! ツ
En kötüsü de Kısa Dalga (SW) yayınlarını dinleyebilmek için odamın ortasına çaprazlama 5 metrelik Şerit Metreyi boğazımın hizasında asmak olmuştu!
Yerinden kurtulup boğazımı kesecek ve kan kaybından aptalca öleceğim endişesi ile o anteni kaldırmak zorunda kaldım!
Bir daha da bu SDR Dongle ile Kısa Dalga (SW) da iyi ses duyamadım!
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The Ancient Art That Could Transform Space Communication
https://atlas.whatip.xyz/post.php?slug=the-ancient-art-that-could-transform-space-communication
<p>Researchers at the Institute of Science Tokyo have developed an origami inspired foldable antenna for
#communication #transform #antenna #deploys -
The Ancient Art That Could Transform Space Communication
https://atlas.whatip.xyz/post.php?slug=the-ancient-art-that-could-transform-space-communication
<p>Researchers at the Institute of Science Tokyo have developed an origami inspired foldable antenna for
#communication #transform #antenna #deploys -
Why are some antennas coated with PVC plastic polyester?
In handheld radios with PVC coating, touching the antenna tends to change the resonance. To prevent resonance changes, they are protected from human hands.
Another purpose is protection from wind and moisture. -
Why are some antennas coated with PVC plastic polyester?
In handheld radios with PVC coating, touching the antenna tends to change the resonance. To prevent resonance changes, they are protected from human hands.
Another purpose is protection from wind and moisture. -
Why are some antennas coated with PVC plastic polyester?
In handheld radios with PVC coating, touching the antenna tends to change the resonance. To prevent resonance changes, they are protected from human hands.
Another purpose is protection from wind and moisture. -
Why are some antennas coated with PVC plastic polyester?
In handheld radios with PVC coating, touching the antenna tends to change the resonance. To prevent resonance changes, they are protected from human hands.
Another purpose is protection from wind and moisture. -
Why are some antennas coated with PVC plastic polyester?
In handheld radios with PVC coating, touching the antenna tends to change the resonance. To prevent resonance changes, they are protected from human hands.
Another purpose is protection from wind and moisture. -
From #Environmental #Health News: "A 2022 review by Alfonso Balmori in Environmental Research examined studies from 20 countries on people living near #cell #towers and cell #antenna sites and found that the majority reported #health effects such as #cancer." Read to see what you can do: https://www.ehn.org/cell-tower-radiation-health-effects
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#CNA:
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Two landmark satellite antennas removed from Bukit Timah Satellite Earth Station
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"The towering antennas stood prominently at the southern end of the Bukit Timah Expressway for close to four decades.""".. removed to make way for future infrastructure ..""
17.4.2026
#antenna #Antenne #Bodenstation #BukitTimah #Raumfahrt #satcom #Satellitenkommunikation #Singapore #Singapur #Singtel #SpaceFlight
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#CNA:
"
Two landmark satellite antennas removed from Bukit Timah Satellite Earth Station
"
"The towering antennas stood prominently at the southern end of the Bukit Timah Expressway for close to four decades.""".. removed to make way for future infrastructure ..""
17.4.2026
#antenna #Antenne #Bodenstation #BukitTimah #Raumfahrt #satcom #Satellitenkommunikation #Singapore #Singapur #Singtel #SpaceFlight
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#CNA:
"
Two landmark satellite antennas removed from Bukit Timah Satellite Earth Station
"
"The towering antennas stood prominently at the southern end of the Bukit Timah Expressway for close to four decades.""".. removed to make way for future infrastructure ..""
17.4.2026
#antenna #Antenne #Bodenstation #BukitTimah #Raumfahrt #satcom #Satellitenkommunikation #Singapore #Singapur #Singtel #SpaceFlight
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#CNA:
"
Two landmark satellite antennas removed from Bukit Timah Satellite Earth Station
"
"The towering antennas stood prominently at the southern end of the Bukit Timah Expressway for close to four decades.""".. removed to make way for future infrastructure ..""
17.4.2026
#antenna #Antenne #Bodenstation #BukitTimah #Raumfahrt #satcom #Satellitenkommunikation #Singapore #Singapur #Singtel #SpaceFlight
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I picked up this antenna for my new WisMesh Pocket, a "Gooseneck Tactical Antenna 4 dBi gain"
and I'm picking up all sort of Meshtastic nodes that I wasn't hearing before, near/around downtown!
it was pricey, and is much larger than I expected, but I think it ended up being worth it
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Anyone have any recommendations for GOOD 900MHZ antenna for #LoRa handhelds?
I don't want fake or untuned crap, but the more affordable the better - ideally a whip/duckie wouldn't be more than $20, maybe $50 for something exotic like a moxon.
There are a raft of us broke punks starting a mesh in an extremely rf hostile environment. Need all the help we can get.
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Anyone have any recommendations for GOOD 900MHZ antenna for #LoRa handhelds?
I don't want fake or untuned crap, but the more affordable the better - ideally a whip/duckie wouldn't be more than $20, maybe $50 for something exotic like a moxon.
There are a raft of us broke punks starting a mesh in an extremely rf hostile environment. Need all the help we can get.
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Anyone have any recommendations for GOOD 900MHZ antenna for #LoRa handhelds?
I don't want fake or untuned crap, but the more affordable the better - ideally a whip/duckie wouldn't be more than $20, maybe $50 for something exotic like a moxon.
There are a raft of us broke punks starting a mesh in an extremely rf hostile environment. Need all the help we can get.
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Anyone have any recommendations for GOOD 900MHZ antenna for #LoRa handhelds?
I don't want fake or untuned crap, but the more affordable the better - ideally a whip/duckie wouldn't be more than $20, maybe $50 for something exotic like a moxon.
There are a raft of us broke punks starting a mesh in an extremely rf hostile environment. Need all the help we can get.
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Anyone have any recommendations for GOOD 900MHZ antenna for #LoRa handhelds?
I don't want fake or untuned crap, but the more affordable the better - ideally a whip/duckie wouldn't be more than $20, maybe $50 for something exotic like a moxon.
There are a raft of us broke punks starting a mesh in an extremely rf hostile environment. Need all the help we can get.
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An open-source 240-antenna array to bounce signals off the Moon
#HackerNews #open-source #antenna #Moon #signals #space #technology #lunar #communication
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Συμμαχία τριών ομίλων στα media / Νέα πλατφόρμα streaming από Μαρινάκη, Βαρδινογιάννη, Κυριακού
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Okay, this is neat: anybody want some late 1940s-early 1960s RADAR TOWER MOUNTS? This guy bought a house and it has them installed in the front yard. A previous occupant had used them to make a swingset, but he just wants them gone:
#seattle #HamRadio #AmateurRadio #antenna #diy #vintage #electronics #WeirdShit
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And NOW, I can get reasonable SWRs on this thing, because NOW, suddenly antenna length matters like it's SUPPOSED TO
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https://www.alojapan.com/1461153/spectacular-tower-of-japan-japantravel-asiantravel/ Spectacular Tower of Japan #japantravel #asiantravel #antenna #engineering #Nagoya #NagoyaDestinations #NagoyaTour #NagoyaTravel #NagoyaTrip #NagoyaVacation #Network #steel #structural #structure #tour #tourist #tower #Transmission #travel #名古屋 Spectacular Tower of Japan #japantravel #asiantravel The technological tower structure of Japan. The Tokyo Skytree, Tokyo Tower, Kobe Tower, Mirai Tower of Nagoya and Tsutenkaku Tower of Osaka.
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https://www.alojapan.com/1461153/spectacular-tower-of-japan-japantravel-asiantravel/ Spectacular Tower of Japan #japantravel #asiantravel #antenna #engineering #Nagoya #NagoyaDestinations #NagoyaTour #NagoyaTravel #NagoyaTrip #NagoyaVacation #Network #steel #structural #structure #tour #tourist #tower #Transmission #travel #名古屋 Spectacular Tower of Japan #japantravel #asiantravel The technological tower structure of Japan. The Tokyo Skytree, Tokyo Tower, Kobe Tower, Mirai Tower of Nagoya and Tsutenkaku Tower of Osaka.
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no #baking today, instead i hiked up to the top of the hill and surveyed antenna pole locations
i think i can work out a reasonable path up there with a weedeater, but the problem is there are a bunch of trees at the hilltop and i don't know how much radio that'll eat
(and it'll be different hf/vhf/uhf of course; right now i'm more concerned with uhf than anything else but, you know, options are good)
but there's also a lower place and easier to reach place where i could mount a pole on top of a retaining wall. it'd need more height there but it has a peek-a-boo view south which _could_ let me straight-line to seattle assuming various terrain maps are correct
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#RF experts, I need your advice!
I live in the middle of dense bushland and am dependent on #4g for my #internet. I am using a Cel-Fi GO G41 repeater with an 18dbi LDAP yagi #antenna. The nearest cell tower is roughly 30km away. On the wave app, it shows that cell tower receive quality is low/poor. I would like to improve this if possible. I'm not too knowledgeable about RF #signals and antennas but my understanding is that a different antenna may help. Can someone advise?
#radio #technology -
A #cellular #antenna can be seen on the horizon nearby our house. Some evenings my toddler asks about it (when/if we look out the window)...
So one (weekend) evening we decided to drive for an #adventure before bedtime - and went to *find* it!
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Tonight’s (already running) A/B #HamRadio #antenna test is #160m #WSPR (RX only) between 6-80 #DXCommander vertical & this ferrite rod magnetic loop, indoors, on my bench.
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📡 Build your own high-gain collinear antenna for 145 MHz & 433 MHz!
Simple design, solid 5-6 dB gain, and no ground plane needed.🔗 https://vu3dxr.in/high-gain-collinear-antenna-for-145-mhz-and-433-mhz-bands/
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How To Build a Dipole #Antenna in Under 3 Minutes
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@finn #meshcore #diy #yagi #antenna
Danke. Ja, brauch nur noch einen neuen Stock ... <hüstel> ... Mast. Da werde ich das komplette Node mit Solarmodul und Tupperbox mit Akku und MPPT-Laderegler an den Stock ... äh ... Mast anbringen.
Aktuell teste ich auch die 6dB größere Sendeleistung des Heltec V4 aus. Heute im Überreichweitenwetter gingen tatsächlich mehr als 9 von 10 Nachrichten beim ersten Versuch raus und erreichten das Ziel. Der Rest dann beim 2ten oder 3ten Sendeversuch.
Soviel gechattet hab ich noch nie über Mesh. Ausserdem hilft es natürlich, dass Meshcore gerade regelrecht explodiert. Bei dir im Norden ist ja Kiel neben Hamburg vorne mit dabei.
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#Meshcore #Meshtastic #lora #DIY #Antenna #Yagi
So. I was still not really nice with my last yagi antenna, which I have built lately.
I have chosen another build, which I found on printables.
This one:
https://www.printables.com/model/979820-10db-eu-and-us-lorameshtasticism-pe5i-yagi-antennaAfter several hours of printing, it's finally ready. It was hard to tune it properly. Best I got SWR 1,21 and impedance of 59+j3 Ohm. Not what I hoped to get. But I installed it.
I think that the link to my next meshcore repeater improved with more than 4 dB. But I have to check it over time.
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@finn #meshtastic #meshcore #lora #diy #antenna #yagi
I have built a second antenna of this style with slightly changed length of the wires.
I calculated it with MMANA-GAL. The new antenna has a resonance at 871MHz. At my frequency of 869,618MHz (UK/EU-Narrow Preset) the impedance is 49+j2,5 Ohm and the SWR is 1,11. The directional gain is also slightly higher, according to the calculation it raised by 1,8dB.
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#Meshcore #Meshtastic #antenna #diy #yagi
I reach the said repeater and am now connected to 50+ repeater around Braunschweig, Wolfsburg, Gifhorn, Helmstedt and even reaching down to the Harz Mountains.
The antenna is a proof of concepts. And now, as this is working, I will build a longer lasting antenna to do the job.
Yay 😃
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#Meshcore #Meshtastic #antenna #diy #yagi
I have built a yagi-antenna for my meshcore-repeater to reach a hardly-out-of-range repeater, which connects me to the Braunschweig-City mesh.
It is this one: https://www.youtube.com/watch?v=XerDHg1y8Z4
A three elements YAGI antenna, with crude lengths of the reflextor, dipol and director. But what shall I say? I managed to tune it to 861MHz. At 869MHz it has a SWR of 1,48 and an impedance of 39-5j Ohm.
Not really good, but obviously good enough?!1/2
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Which #2m #antenna for my SOTA backpack ?
I'm looking for a lightweight and easily packable device for 144/145 MHz
I would use it with a FT-290R-II and its 25W amp in FM/SSB in horizontal and vertical polarization.
I've found these, but I need advices from field operators. How do you put them in the air (hanged to a tree ? Mast ?
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Finally built and tuned my new inverted-V fan dipole #antenna for #POTA #SOTA #WWFF. It's three 40m, 20m and 10m dipoles fed in the middle from the same box. I hang the feed point box from a rope I throw over some trees, or from my 10m #Spiderbeam, and then tie the antenna wires down with some pegs.
40m/20m/15m/10m/6m don't need a tuner.
60m/30m/17m work very well with a tuner.
The whole construction is ultralight, it's basically just the weight of the wires and ropes.
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The #meshtastic journey continues... Next step: placing my own ROUTER_LATE node on a hill in the area to connect our village and valley to the nearest town. Occasionally, other nodes come through, but I clearly still need to work on the positioning. #RAK #wisblock4631 with #solarpanel 3dB #antenna and #diy housing on an aluminum post... I've already spoken to the local #farmers: I'm allowed to use their hill, which is the highest in the area. Maybe that will allow me to reach the next town.
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A very well written article on #Moxon #multiband #HF #antenna by S21FIA
