Great video, Derek! Found your channel on accident while doing a search for antenna ideas this morning. I may try to pick up one of those masts now! Hope you’re doing well, thanks for your help! -JS6TVU, Okinawa
To get over the dangling-feeder and interaction problem, I put a sleeve current-choke 1/4 wave down the coax; the (outer surface if the outer conductor of the) coax above the choke forms the lower half of the dipole. It's all vertical, using the deliberate co-ax radiation technique 😀
Interaction with the coax is overrated, imho. But antenna theory and experiments are fun. The benefit would be more related to adding strength to the construction, and longevity to the coax. Good idea for a permanent install, though.
Do you still have the 7300 as well as the 3000? Both lovely Radios, Fibreglass poles are a great way of supporting different designs of antenna, my preference being inverted dipoles..no atu required..another I use is the multi band vertical using a 10 meter length of 300 ohm ribben feeder and a home brew wound transformer..works really well when the bands are in better shape.. 👍
Thanks for the video. Actually, I have one of these spiderbeam poles and I found that by letting the feedline go off at an angle, it was really causing the mast to bend down a lot. I don't know if that's normal, but it was making me nervous.
@@theenglishspace5141 I guess this is what annoys me about the Spiderbeam. What's the point of it being 40 feet tall if it won't bear much weight at that height?! I might as well have just stayed with my metal pole mast that was 30' tall and saved myself the money and trouble.
@@tglenn3121 Well, you're talking metal vs. Fiberglass and portability. They are two different animals with two main differences in purpose. Compared to other fiberglass collapsing poles out there, the Spiderbeam is much more stout.
@@theenglishspace5141 I'm talking about height. If the company says the mast is 40' tall, but it can't bear any weight heavier than a paper clip without bending over, then they should note that. I'm not putting a big beam on this antenna, I'm putting a dipole. The stupid fiberglass mast should be able to support that weight without bending over.
AliExpress sells them. They are the MR100 or SARK100 version. Personally, I would not bother and get the newer NANOvna analyzers with the visual readout. Know that they often come uncalibrated. Mine was built but uncalibrated. Found calibration was not so necessary at HF frequencies, but some may care about that. Not sure if you can buy the kit alone. The analyzer has a website written on it, but it is a dead link.
Nice Video! Vertical Dipoles are awesome, and I had a great time on 17M in XU7, I bet you are in HL! Btw, we subscribed to your channel! 73, Jarrad VK3BL
Thanks. Foreigners (and Koreans too, I believe) can use their foreign exam to get a license here. I'm not sure if that's for all countries, or just some, like the USA.
@@thestingyham1188 Cool. I just passed my tech exam and my general exam is next week. I was wondering if I could work some local repeaters while I was back home in Seoul for breaks, I'll look into it. Thanks for the info.
Nice video, just wondering if this is a dipole, couldn't it be fed with 75-ohm coax and tuner out in the shack back to 50-ohms. I acquired some cable hardline real cheap and looking for ways to use it?
I got it from Aliexpress. It is a Sark100 clone called the MD100. I would get one of the newer Sark100 models in a box. Mine came uncalibrated. Check with sellers to find out it is calibrated, before buying.
Great video, Derek! Found your channel on accident while doing a search for antenna ideas this morning. I may try to pick up one of those masts now! Hope you’re doing well, thanks for your help! -JS6TVU, Okinawa
Thank you for your information. ^^
To get over the dangling-feeder and interaction problem, I put a sleeve current-choke 1/4 wave down the coax; the (outer surface if the outer conductor of the) coax above the choke forms the lower half of the dipole. It's all vertical, using the deliberate co-ax radiation technique 😀
Interaction with the coax is overrated, imho. But antenna theory and experiments are fun. The benefit would be more related to adding strength to the construction, and longevity to the coax. Good idea for a permanent install, though.
You can use a sleeve dipole instead to avoid the hassle with the feedline
Do you still have the 7300 as well as the 3000? Both lovely Radios, Fibreglass poles are a great way of supporting different designs of antenna, my preference being inverted dipoles..no atu required..another I use is the multi band vertical using a 10 meter length of 300 ohm ribben feeder and a home brew wound transformer..works really well when the bands are in better shape.. 👍
Sold the 7300 to buy the 3000. In the big city, I find the 3000 works much better on low bands. I preferred the 7300 on high bands.
Thanks for the video. Actually, I have one of these spiderbeam poles and I found that by letting the feedline go off at an angle, it was really causing the mast to bend down a lot. I don't know if that's normal, but it was making me nervous.
If you make an inverted-V out of it, for example, I find I only go about 1/2 to 2/3 of the way up with the balun.
@@theenglishspace5141 I guess this is what annoys me about the Spiderbeam. What's the point of it being 40 feet tall if it won't bear much weight at that height?! I might as well have just stayed with my metal pole mast that was 30' tall and saved myself the money and trouble.
@@tglenn3121 Well, you're talking metal vs. Fiberglass and portability. They are two different animals with two main differences in purpose. Compared to other fiberglass collapsing poles out there, the Spiderbeam is much more stout.
@@theenglishspace5141 I'm talking about height. If the company says the mast is 40' tall, but it can't bear any weight heavier than a paper clip without bending over, then they should note that. I'm not putting a big beam on this antenna, I'm putting a dipole. The stupid fiberglass mast should be able to support that weight without bending over.
I would love to know where you got your custom built antenna analyzer. Please do share. is their a kit out there where others can build it themselves.
AliExpress sells them. They are the MR100 or SARK100 version. Personally, I would not bother and get the newer NANOvna analyzers with the visual readout. Know that they often come uncalibrated. Mine was built but uncalibrated. Found calibration was not so necessary at HF frequencies, but some may care about that. Not sure if you can buy the kit alone. The analyzer has a website written on it, but it is a dead link.
Nice Video! Vertical Dipoles are awesome, and I had a great time on 17M in XU7, I bet you are in HL! Btw, we subscribed to your channel! 73, Jarrad VK3BL
Awesome video, Derek! Did you have to take the Korean ham exam in Korean? Just curious.
Thanks. Foreigners (and Koreans too, I believe) can use their foreign exam to get a license here. I'm not sure if that's for all countries, or just some, like the USA.
@@thestingyham1188 Cool. I just passed my tech exam and my general exam is next week. I was wondering if I could work some local repeaters while I was back home in Seoul for breaks, I'll look into it. Thanks for the info.
Nice video, just wondering if this is a dipole, couldn't it be fed with 75-ohm coax and tuner out in the shack back to 50-ohms. I acquired some cable hardline real cheap and looking for ways to use it?
Sure.. you just have to match it before it gets into the radio. You might lose a little here or there, but not a lot.
What is the name of the testing device you’re using? I’m interested in a small firm factor like that
I got it from Aliexpress. It is a Sark100 clone called the MD100. I would get one of the newer Sark100 models in a box. Mine came uncalibrated. Check with sellers to find out it is calibrated, before buying.
데릭피코너 thank you for your speedy reply. 73!
5:49 59 Hahahahaha 😂😂😂
Why people feel the need to ruin a video by blasting rubbish music is beyond me.
A lot of money just to exchange callsigns.