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Posted: 4/15/2024 11:42:27 AM EDT
[Last Edit: oldcatawba]
So made my first homemade non kit antenna for 10M. Didn't get it finished till pretty late in the day but did make a contact with Madeira Island so guess it was successful. 10M propagation apparently is best during daylight hours so maybe Saturday I'll make a run in 10 and see what I get.
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Posted: 4/15/2024 12:35:56 PM EDT
[#1]
If that is a center-fed verticle dipole I would try and bring that Coax out at a 90 degrees for as far as you can before sloping it to 45 degrees. Looks like it is doing well, but by doing that it will help keep the pattern from distorting from interaction with the shield of the coax, and help to keep RF from coming back on the shield.
Making antennas is fun, especially when they work. |
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Posted: 4/15/2024 12:50:54 PM EDT
[#2]
yep
10meters is a blast I have worked the world on 10 now is the time, sunspots are here |
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Posted: 4/15/2024 1:25:48 PM EDT
[#3]
Quote HistoryOriginally Posted By stanprophet09: If that is a center-fed verticle dipole I would try and bring that Coax out at a 90 degrees for as far as you can before sloping it to 45 degrees. Looks like it is doing well, but by doing that it will help keep the pattern from distorting from interaction with the shield of the coax, and help to keep RF from coming back on the shield. Making antennas is fun, especially when they work. |
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Posted: 4/15/2024 2:00:42 PM EDT
[#4]
@oldcatawba
The antenna will perform better for DX as a vertical. As above, have the coax come away from the wire at 90 degrees for as long as possible. Additionally, pull the antenna up so the bottom element is off the ground. Ideally, by 8-10 feet but anything will help, the ends of the dipole are high voltage points so it is best to have those away from the ground and people. As an alternative, build or buy one of the End Fed antennas, where the coax matching unit attaches to the end of the wire. Then the antenna can be in vertical polarization and the coax can come off the bottom or the top. hth 73, Rob |
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Posted: 4/15/2024 2:03:18 PM EDT
[#5]
Indeed, same concepts will apply when feeding Yagi antennas and becomes problematic in cross dipole antennas. Keep the coax from going parallel to the radiating plane as far as you can to minimize interactions with the radiation pattern.
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Posted: 4/15/2024 3:59:20 PM EDT
[Last Edit: Frank_B]
[#6]
10 can really open up when the Solar Flux (SFI) is high. It's been down for several days but appears to be climbing back up. CLICK HERE
Ionospheric propagation is the key for 40 Meters and up. If you haven't already, start reading up on it. It's a fascinating subject. |
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Posted: 4/15/2024 4:40:46 PM EDT
[Last Edit: oldcatawba]
[#7]
Quote HistoryOriginally Posted By robmkivseries70: @oldcatawba The antenna will perform better for DX as a vertical. As above, have the coax come away from the wire at 90 degrees for as long as possible. Additionally, pull the antenna up so the bottom element is off the ground. Ideally, by 8-10 feet but anything will help, the ends of the dipole are high voltage points so it is best to have those away from the ground and people. As an alternative, build or buy one of the End Fed antennas, where the coax matching unit attaches to the end of the wire. Then the antenna can be in vertical polarization and the coax can come off the bottom or the top. hth 73, Rob |
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Posted: 4/15/2024 4:49:31 PM EDT
[Last Edit: robmkivseries70]
[#8]
At 10M the antenna orientation may not matter as much, once the signal is bouncing off the ionosphere the polarization doesn't matter. Getting the antenna up above the local ground clutter, neighboring houses etc. will make the most difference. hth
73, Rob It's been said that when 10M really opens up the world can be worked with a wet noodle for an antenna. 
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OH, USA
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Posted: 4/17/2024 9:34:21 AM EDT
[#9]
One can get really creative with wire antennas for 15 through 10M. The old Antenna Handbooks had lots of designs for gain-type setups. Some could be electrically switched for directivity. None required elaborate support structures, either.
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Posted: 4/17/2024 5:22:04 PM EDT
[#10]
I've worked Ivan as well. He's usually got a real pile-up going. If you get the opportunity and he's not too busy, He's a nice guy to talk to.
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LA, USA
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Posted: 4/17/2024 6:14:30 PM EDT
[#11]
Download WSPR Watch for your phone.
You’re welcome. |
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Posted: 4/18/2024 9:15:05 AM EDT
[#12]
Saturday will be the first day since I hung the antenna that I'll be able to try it during daytime hours. I might very well try it in a vertical as mentioned above if I have time.
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