Winding the CaHRtenna Artemis Toe-Roid (Prototype) - 49 :1 Unun / Balun
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- Опубликовано: 14 мар 2022
- #cahrtenna-artemis
The CAHRtenna Artemis is a 49:1 End Fed Half Wave Dipole (EFHW) Antenna designed for portable amateur / ham radio use on; 10, 15, 20, and 40-meter amateur radio bands. It’s designed as a lightweight but rugged kit that any ham will be able to assemble with basic tools that are readily available in most hamshacks. The antenna has been tested at 50w digital and 100w SSB.
Some of the feedback we have gotten about the CAHRTenna Artemis included questions about wiring the 49:1 UnUn Transformer. Here is an excerpt from a longer prototype build video I did link below:
• CaHRtenna Artemis EFHW...
Here is the current FAQ for the antenna:
Q: What is the material used for the frame?
A: HP PA 12 or Polyamide 12 Nylon, it is strong, durable, and heat-resistant.
Q: What type of wire do you use?
A: It's 22AWG silicone jacketed multi-strand tinned copper wire.
Q: Can I get a SO-239 version?
A: No, right now it comes with a female BNC connector. You can fit an adapter to the BNC connector if necessary.
Q: What toroid is it?
A: It is a t140-43 mix ferrite core.
Q: Can it do 80 meters?
A; The antenna kit comes with approximately 90’ for 22 AWG silicone jacketed multi-strand tinned copper wire. We suggest starting with 70’ for the element and 20’ for the counterpoise and tuning from there, you could vary the length of the element for 80 meters or any other frequency but the frame is only designed to hold enough wire for a 40-meter antenna.
Q: Can I just buy the frame?
A: No, right now the antenna is sold as a complete kit. This might change in the future.
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Looking good. Can't wait for the release.
You and me both!
This is looking good! Make it look easy!
Thanks man, hopefully we get this out the door soon.
Ape does allot of winding cores . I don't wind many and I watch Ape so I can get it right ,73's
Thank you Professor Ape!🥰🔥📻👍
Thanks for watching Aname!
I don't have the equipment or place to build one. Can I buy one completed.
Nice...............
Thanks Ali 👍
nice heavy wire. the toroid will limit the max power. doing a tipple T 240-43 core with silver plated PTFE wire but 64:1 and no cross over. think Kapton tape the cores together in a stack. I may put 2- 220 PF 3Kv disk caps in series. makes 110 PF 6Kv. the next size up I have is 330 PF 3KV . I think the 2 will do full legal power just fine. I think a electrical ABS box at home depot will work. I like that CAHRtenna .what the power rating on that one? I got one with a T 240-43 core on the way as a kit. 250 watt PEP . That POTAFLEX 7 coax is bright yellow, NEON yellow. boy does it flex. Mike K8MRD had a lot to do in the makings of that coax. that winder super neat. That came the outher day and POTAFLEX 1 meter jumpers. came from Italy . love your build videos . helps me with my projects ,I do allot of them. 73's
We tested a bunch of different gauge wire for this and felt that the 16awg was the best choice. We say the antenna is good for 100w ssb and 50w digital / cw but I have run about 85w on ft8 without a problem 👍. Good luck on your antenna build, sounds like it will be awesome 👍
This for a 1KW End Fed antenna?
No, it’s about 100w ssb
Does winding need to be insulated
Yeah, on this one the magnet wire has a thing enamel coating 👍
Do you all have time when it will be for sale KQ4CD Paul
"Soon" sorry its not a better answer Paul
@@TheSmokinApe ok been long time and I want one for portable use.
@@TheSmokinApe ok no problem it will be when it's done
The battery must come to a stop at the ending part of the video. You have not told's where all the wires are going go. hoping this can be cleared up on a UPDATE!
Right from the description: Some of the feedback we have gotten about the CAHRTenna Artemis included questions about wiring the 49:1 UnUn Transformer. Here is an excerpt from a longer prototype build video I did link below:
ruclips.net/video/yd_MeEYsLbs/видео.html
Hello sir can i have the tore reference please
The toroid? It's a ft140-43 👍