Nice to see cw being used.

Great video. I built the quarter size version yesterday and took it to a hilltop and it worked really well. Today I might make the full size version and try that !!!

@Linas_LY2H

6 күн бұрын

@@fotografm Cool, good luck! You can compare them all, then. 73! Linas LY2H

@fotografm

6 күн бұрын

@@Linas_LY2H Just got back from the hilltop. The full size version needs an ATU for every band but the performance was really good despite the lower bands being totally dead today. The quarter size vertical is quicker to erect of course and doesn't need an anchor point for the far end of the wire, plus at least 66 feet of space to erect it in. Will try again when band conditions are better ! I use FT8 to get fast signal reports from all over the world. I find it an invaluable tool 🙂 73 de Simon G3EYR

@Linas_LY2H

5 күн бұрын

@@fotografm Thanks for sharing this Simon! Very interesting findings on the full size antenna. I'm also going to come back to the W3EDP antenna in some near future with some more experimenting . And yes, I agree, FT8 is a great mode for real-life antenna testing! 73! Linas LY2H

Regarding the Guanella balun, the Elecraft switchable 1:1-4:1 uses a binocular toroid to mimic two transformers. It's easy to replicate for the home brewers among us.

@Linas_LY2H

Жыл бұрын

Thanks for the info, it's certainly a nice Guanella balun implementation. The right binocular toroids might be hard to come buy, though. Hopefully, not:) 73! Linas LY2H

Great video, so much fun playing with different antennas

Linas, I just realised that this antenna can also be seen as a J-Pole !

Great video,with excellent presentation of the theory, pre and post balun/unun and actual performance. This looks like a good performer for QRP portable operation.

Good tests Linus, interesting how you check common mode current too. Good work.

Great video !

Short and to the point, like it , 73!

Great video. Interested design. The analogy to the zep is interesting.

Excellent video Linus, charismatically presented as always. You have inspired me to build one, 73 M7PBX

Just found your channel. Great antenna!

very impressive!😜

A good Zepp that I use regularly for my POTA activations. I have tried various lengths of both the radiator and the counterpoise, with varying results. - Jason WV3V

@billclark148

Жыл бұрын

Thanks for pointing me to this video. I will make the JUNIOR version tonight and research making my own 4:1 unun andv1:1 choke.

You are a cw wizard copying that bug! The unusual dit/dah balance completely crashed my brain hi hi

@Linas_LY2H

Жыл бұрын

I'm amazed each time I hear this unique invention Vibroplex on the air! It requires special skills to send CW on it. Thanks for listening so attentively to my video! 73! Linas LY2H

Excellent video !!! Reminds me of a Zeppelin Antenna. Old reliable technology. Thanks for reviving and show us how efficient that design is. Please keep posting more interesting videos. I see you are having fun while doing them…. Keep them coming, we learn a lot in the process too. Hope to work your station one day. 73 Rob YS1RS

@Linas_LY2H

Жыл бұрын

Thanks Rob! It is kinda' Zep :). With summer here, I plan more antenna stuff! Stay tuned! 73! Linas LY2H

I think one of my next purchases will be an antenna tuner. Very interesting antenna with an interesting history. Thanks for the video de N7MRF 73s.

@DM7XK

Жыл бұрын

True - buy an Elecraft T1, which tunes EVERYTHING. /Mike

Nice video, Linas. Will build one for testing. Built your common mode tester as well, works great. If you can‘t get SotaBeams winder, please check out for the HQ-Winder Pro at Metropolis Drachen in Germany. They seem to be same, but just different branding.

@Linas_LY2H

Жыл бұрын

Thanks a lot for the information, I'll check with them! 73! Linas LY2H

Excellent video, Linas! What an interesting antenna design.

@Linas_LY2H

Жыл бұрын

Thanks Thomas! Everything new is old forgotten :) 73! Linas LY2H

I use the Full size , the Jr and the mini for POTA. Works good. 73. N1XXU

@Linas_LY2H

11 ай бұрын

Fantastic! How would you compare the Full size vs Jr? 73! Linas LY2H

@Andrew-yx7sf

11 ай бұрын

@Linas_LY2H the full size tuned up easier on 40. Worked well on 40 and 20. The JR I had a little trouble tuning on 40 so I used a 9:1 Unun. Tuned up fine on all bands. The Jr worked better on 20 and 17 than the full size. I put it up as a vertical on my 12 meter Spider Pole as well as in a tree. The full size I put up as an inverted L.

@Linas_LY2H

11 ай бұрын

@@Andrew-yx7sf Thanks for the info, very interesting and useful one! CUL, 73! Linas LY2H

You need an unun, a balun, and a tuner? You can get 1:1 on anything with all that. It's not a resonant antenna. But if you can make it work, that's great.

@Linas_LY2H

Жыл бұрын

That's what Ham Radio is all about- making things work! 73! Linas LY2H

Excellent video, well explained and demonstrated....mni tnx ! 73 de ON4CDJ

I think I have a new quick project. I haven't used window line in over five years. It should be fun.

вау новая польская любительская станция !!!!

Hi Linus your 4 to 1 balun is a copy of the qrpguys unit, look there for the manual.

@Linas_LY2H

Жыл бұрын

Thanks for the info Chris.

Linas, could you measure impedance/reactance just with the 1:1 common current choke? Without the 1:4. When you get i.e. 16 ohms using the 1:4 and the 1:1, you should get something like 64 ohms without the 1:4 and this would be closer to what we would want to see. 73, DL5MHK

@Linas_LY2H

Жыл бұрын

Thanks Ralf! Yes, I probably could, just not these days: we've got tons of snow and the freezing temperatures :). Actually, it seems to me that the impedance behaviour in such an antenna heavily depends not only on the operation frequency but also on the role of the twin-lead feeder: on some frequencies it can act as a quarter wave stub, on the others- just like a short counterpoise etc. :) So, it will be interesting to make these measurements, thanks for suggestion again! I think I'll do this on the full-size version of this antenna installed on my 10m Spidermast. Weather permitting , though ... 73! Linas LY2H

@ralfbuschner6925

Жыл бұрын

@@Linas_LY2H Hi Linas, I would recommend to try it with the antenna you've shown here - so you have a direct comparison. Or for sure the fullsize version with and without the 1:4, to see the difference. But if you have a real part closer to 50 Ohms on the fullsize version, then it's not necessary. Long story short: Do it with this version first! .... .. 73, Ralf, DL5MHK

@Linas_LY2H

Жыл бұрын

@@ralfbuschner6925 Sounds reasonable!

Very educational sir. As we say in Texas, Don't MESS WITH UKRAINE!

I always learn something new! You Linas, are a natural teacher. It’s second nature to you, and your knowledge and expertise help me understand the principles and theory of Radio communications. The Zepp is an interesting antenna, I never knew you could scale it down… the balun, and RF chokes, are also an important consideration. I have several RF chokes, but rarely need to use them, given I use Antennas which are not prone to common mode currents. Thanks Linas, for the video, and the knowledge you share. de W7UDT Rand (dit dit)