JevidL (KE8DET) · @jevidl
140 followers · 394 posts · Server ono-sendai.jevidl.net
Picture of the WIP, but ready to test prototype #dipole #antenna. Despite what the camera perspective suggests, it's approximately 38" overall length without being extended.
The end goal is that it will work for 20m - 6m, mounted on a fiberglass mast.
#dipole #antenna #amateurradio #pota #hamradio #antennadiy #3dprinting
Abraxas3d W5NYV · @abraxas3d
777 followers · 1821 posts · Server mastodon.radio
IT News · @itnewsbot
3625 followers · 270543 posts · Server schleuss.onlineThe Dipole Antenna Isn’t as Simple as it Appears - Dipole antennas are easy, right? Just follow the formula, cut two pieces of wire, ... - https://hackaday.com/2023/08/16/the-dipole-antenna-isnt-as-simple-as-it-appears/ #radiohacks #wavelength #bandwidth #frequency #impedance #resistive #reactive #antenna #dipole #vna
#vna #dipole #antenna #reactive #resistive #impedance #frequency #bandwidth #wavelength #radiohacks
Alper · @alper
338 followers · 736 posts · Server mas.to
Dipoles?
Where we are going we don't need dipoles...
Today I learned a lot about #impadence #transformers. They are quite picky about some unknown things. A #Nanovna saved the day by letting me measuring before putting everything together.
#qrp #dipole #randomwireantenna #qrpp #amateurradio #hamradio #amateurfunk
#amateurfunk #hamradio #amateurradio #qrpp #randomwireantenna #dipole #qrp #nanoVNA #transformers #impadence
Richard C · @g7eix
19 followers · 27 posts · Server mastodon.radio
Johan | PD1JMB · @dynode
208 followers · 2742 posts · Server mas.to
James · @KI5FGS
44 followers · 43 posts · Server mastodon.radioSo I finally got a 10 meter #dipole in the air this evening just to see if I could hear anyone. Came across some cw and I maybe heard the last part of a #qso but not really much going on. Mostly I was excited to see how my #swr was I was happy with 2:1 across the band. I was surprised about how flat it was according to my little VNA. Anyway it was a enjoyable evening playing radio!
GeoJoeK / KC1SRI · @Geojoek
169 followers · 722 posts · Server mastodon.hams.socialWhat are folks' thoughts / resources / design considerations for an 80m OCF dipole that would be end supported (feedpoint would not supported and would have weight of 80+ feet of LMR400 coax pulling on it).
Hanging the thing would be made much simpler, and I could get it much higher, if I didn't have to support the center, but not supporting the center also complicates things, I imagine.
#HamRadio #dipole #antenna #hamr
AI8W 🤖📡 · @AI8W
58 followers · 627 posts · Server mastodon.hams.social
#dipole is up.
I miscalculated something for 80 and 160... not sure what, but... at least 40 and up work (except for 12m.. no tune on 12m...)
AI6YR Ben · @ai6yr
746 followers · 1208 posts · Server mastodon.radio
yeti · @yeti
84 followers · 169 posts · Server emacs.chFraser Cain / Dr Ronald Polidan
Self-Building Radio Telescope On The Far Side of The Moon [NIAC 2023]
https://y.com.sb/watch?v=a99QXRIO1g4
#FraserCain #RonaldPolidan #aurora #dipole #FarView #interview #magnetosphere #mining #Moon #NIAC #observatory #preamplifier #radioTelescope #rover #solarPanel #vonNeumannProbe
#frasercain #ronaldpolidan #aurora #dipole #farview #interview #magnetosphere #mining #moon #niac #observatory #preamplifier #radiotelescope #rover #solarpanel #vonneumannprobe
Kelvin n0mql EN35ld · @kelvin0mql
117 followers · 1568 posts · Server mastodon.hams.socialHaven't stretched the #dipole #antenna out this far in a long while. But after that #SolarStorm, the #MaxUsableFrequency numbers are pretty low.
#dipole #antenna #solarstorm #maxusablefrequency #js8call #40meters #HamRadio
GeoJoeK / KC1SRI · @Geojoek
135 followers · 447 posts · Server mastodon.hams.social
Geojoek · @Geojoek
102 followers · 191 posts · Server mastodon.hams.socialA multiband #HF antenna I am considering for my home station is an off-center fed #dipole. My visceral reaction to a commercial option for one was "OK, but I know enough so far that I think I could build the same thing out of better materials for half the price."
However, being an antenna neophyte, I was also wondering if I could use a balanced feedline instead of coax. And then I found this great discussion by VE2DPE: https://www.hamradiosecrets.com/off-center-fed-dipole.html #HamRadio
Jim · @N4JAW
627 followers · 468 posts · Server mastodon.radio
Its a beautiful day to hunt #pota #parksontheair with #Buddipole #dipole #Youkits #HB1B #QRP #MorseCode #QRPRadio & #AmericanMorse #ultraportapaddle Trying to decide which way to use paddle. Both ways are doable & comfortable. #CWops #CWop
#cwop #cwops #ultraportapaddle #americanmorse #qrpradio #morsecode #qrp #hb1b #youkits #dipole #buddipole #ParksOnTheAir #pota
Jim · @N4JAW
621 followers · 455 posts · Server mastodon.radio
It's a @Buddipole #buddipole #dipole kind of day chasing #sota #summitsontheair & hunting #pota #parksontheair. #amateurradio #hamradio #cw #morsecode #cwops #qrpradio #qrp #hb1b
#hb1b #qrp #qrpradio #cwops #morsecode #cw #hamradio #amateurradio #ParksOnTheAir #pota #SummitsOnTheAir #sota #dipole #buddipole
Tony W6SFI · @w6sfi
53 followers · 192 posts · Server mastodon.radioSo after some time spent on the roof this afternoon with a multimeter and antenna analyzer, the misbehaving #dipole is still something of a mystery. Perhaps the elements and mechanical #fatigue are playing havoc with it. It seems to be OK for 10, 15, and 20 meters but somewhat less so at 40. Maybe the traps/coils between the 20 and 40 meter segments are getting curmudgeonly. Raising one leg and fastening it to a tree instead of the house seems to have helped a little at least.
AI6YR Ben · @ai6yr
646 followers · 638 posts · Server mastodon.radio
Tony W6SFI · @w6sfi
49 followers · 170 posts · Server mastodon.radioUsing a #vertical #antenna meant for #mobile use in my backyard is less than ideal, but the #transmatch likes it a lot more than the #hexbeam or #dipole on my roof, at least when it comes to 10 meters. So we'll see if I can actually participate meaningfully in this evening's gathering on that band.
#dipole #hexbeam #transmatch #mobile #antenna #vertical
Tony W6SFI · @w6sfi
49 followers · 168 posts · Server mastodon.radioAfter some experimental review at 30ish watts, the 10 meter element on the #hexbeam needs some inspection, but the other bands seem to behave. On the #trapped #multiband #fan #dipole, however, receive is fine but my #transmatch just can’t cope on transmit. I hope that’s a #feedline problem and not an #antenna problem. Either way, I must ascend to the roof to see what’s what. Perhaps two weekends from now; next weekend is booked for #portable #operating already 😁
#operating #portable #antenna #feedline #transmatch #dipole #fan #multiband #trapped #hexbeam