va3db, to hamradio
@va3db@mastodon.radio avatar

What saddens me is so many hams think a dipole is best because it presents a "perfect match" of 50ohms. Wrong. A dipole is roughly 72 ohms if you are lucky and wildly different depending on height and structures nearby.
Yagi antennas are even worse depending on the design and often need an antenna tuner hidden at the antenna. Get the lowest loss feedline you can use and don't feel guilty about the tuner in the shack.

#HamRadio #AmateurRadio #Antenna

jos1264, to Software
@jos1264@social.skynetcloud.site avatar
N4JAW, to amateurradio
@N4JAW@mastodon.radio avatar

Active sun, changing bands conditions. Taking along #youkits #hb1b & #linkeddipole #antenna for more #pota #parksontheair #morsecode activation options. #qrp #qrpradio #amateurradio #hamradio @POTAspots

ai6yr, to hamradio

Experimental Wet Noodle Antenna! (from @w6ah ) #antenna #hamradio #wetnoodle https://youtu.be/9EmDv-mmnOw

BelfastRoadster, to tv
@BelfastRoadster@birds.town avatar
mima, to fediverse

How did syuilo find this low-effort shitpost I just replaced a few words on, I literally did not mention him (despite how tempting it is to actually do ​:koakuma_giggle:​, but it kinda is rude to mention people for such a random post ​:sagume_think:​) ​:koishtare:​

Does he have an #antenna listening for every mention of his handle or #Misskey without the hashtag ​:chuckling_okuu:​

RE: https://makai.chaotic.ninja/notes/9op6nkgkch

andthisismrspeacock, to tv
@andthisismrspeacock@mas.to avatar

While those of us in the Northeast US are doing #storm prep and worried about outages, seems like a good time to remind you that you should get a #TV #Antenna.

You can get a really good one for around $150 (plus the cost of a handyman to stick it on your roof if, like me, you have a thing with heights):

https://www.channelmaster.com/collections/outdoor-tv-antennas

You can search your address here to find out where to point it:

https://tvfool.com/index.php?option=com_wrapper&Itemid=29

#Snow #Snowstorm #FreeTV

hackbyte, to diy
dynode, to hamradio
@dynode@mas.to avatar

Any piece of wire can function as an #antenna, also long runs of galvanized steel nailed to poles 😋 #hamradio #swl

mattotcha, to random
@mattotcha@mastodon.social avatar
va3db, to hamradio
@va3db@mastodon.radio avatar

A resonant antenna isn't necessarily great. Mobile whips are made resonant too.

P.S. resonant dipoles are not 50 ohm at resonance either.

#HamRadio #AmateurRadio #HamR #Antenna

dynode, to hamradio
@dynode@mas.to avatar

Built a out of a wheel spoke and some galvanized steel strips. Seems to work OK but I still have weak reception of a repeater that is basically line of sight. Another repeater is full quieting on receive so I suspect a coax or receiver issue.

itnewsbot, to amateurradio

A Canned Ham Ham Antenna - If you’d have asked us for odds on whether you could successfully turn a canned ha... - https://hackaday.com/2023/11/16/a-canned-ham-ham-antenna/

Thoogah, to pixelart
@Thoogah@mastodon.world avatar
KJ7OFH, to physics
@KJ7OFH@mastodon.hams.social avatar

This is pretty darned cool.

'Physicists create new form of antenna for #radio waves'

#Antenna #Physics

https://phys.org/news/2023-10-physicists-antenna-radio.html

bud_t, to hamradio
@bud_t@m.ai6yr.org avatar
pixel, to television
@pixel@social.pixels.pizza avatar

Which broadcast channels can you receive for free? It's time you cut the cord!

#Antenna #OTATV #Television #TV
https://www.antennaweb.org

ko4fzg, to amateurradio

If I had for example a 84' end fed random wire and a 70' tree its in, what would I do with the extra 14'?
lay it flat on the ground or...

#AmateurRadio #hamradio #ham #antenna

APBBlue, to DC
@APBBlue@zirk.us avatar

Anyone in #DC ditch #Comcast #Xfinity #cable and rely on an #antenna for local #broadcast TV? What stations are you able to pick up? What kind of antenna do you use?

(Looking to cut the cord but anxious.)

alper, to amateurradio

Hey lovely folk of , I am planing to make a field portable / for maybe up to 20 meter. I am considering several design choices and came by with the idea of vertical moxons hung from fishing poles. I wonder how this would compare to horizontal and higher hung . Interwebs gave me no answer. I aim to make it simple and compact and vertical idea is good for that goal but I want this to be my efficient antenna so... Any ideas?

ai6yr, to hamradio
@ai6yr@m.ai6yr.org avatar

My big silver #heat reflecting umbrella #antenna also worked fine in torrential Tropical Storm #rain! (As an umbrella... did not try to transmit while raining) #hambrella #hamradio

ai6yr, (edited ) to hamradio
@ai6yr@m.ai6yr.org avatar

New . built from an ! Receiving (appropriately) the National Weather Service WX Radio. Best SWR are the frequencies, strangely enough!
https://youtube.com/shorts/JnOuYFWag18?feature=share

ai6yr, to hamradio

My #hambrella receives fine on 20m! HA! #hamradio #project #hf #antenna

video/mp4

ai6yr, to hamradio

Receiving the International Space Station #ISS on my new #hamradio #umbrella #antenna #hambrella.

ai6yr, to hamradio
@ai6yr@m.ai6yr.org avatar

First transmit test on my new very reflecting (). (works great for blocking sun, as well).

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