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Modificated RANDOM WIRE ANTENNA with 9:1 UnUn (part 2) 

OM0ET
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This is the following video of the Home made Random Wire Antenna with 9:1 UnUn. I did make a few modifications on it.
Used enclosure/box source link:
www.tme.eu/en/katalog/#id_cat...
Here is the link to PART 1: • RANDOM WIRE ANTENNA wi...
I will very appreciate if you will support my work and you became to my patron on Patreon ;-) / om0et
Thank you very much for watching my videos! 73 Paul OM0ET

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13 сен 2018

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Комментарии : 43   
@acestudioscouk-Ace-G0ACE
@acestudioscouk-Ace-G0ACE 3 года назад
That looks like a very neat unit. I'm going to watch the next video to see how it worked out.
@vne2328
@vne2328 3 года назад
I thought "20m" was an end fed half wave rather than a "random" wire. Nice setup.
@user-ic2qr7fg6i
@user-ic2qr7fg6i 4 года назад
Nice job!
@eknaap8800
@eknaap8800 5 лет назад
Saw the previous video as well. With 20 mtrs of wire, it seems to me you've made a EFHW (End Fed Half Wave) antenna instead of a 'longwire' . Then the 1:4 or 1:5 UnUn, you have constructed in part 1, will work just fine. 73 de PD0PSX.
@MATEOMR-fo6qw
@MATEOMR-fo6qw 5 лет назад
thanks for the video!
@OM0ET
@OM0ET 5 лет назад
Thanks for watching! ;-)
@rodneyjohnson4794
@rodneyjohnson4794 4 года назад
i was hoping to actually see the rest of the project!
@steadfast666
@steadfast666 5 лет назад
Nice work as allways Paul - still need time to test the mag loop - but will do for sure
@OM0ET
@OM0ET 5 лет назад
Thank you! Actually very poor propagations for QRP 🤔 i hope for QSO with you in the future. 😉👍 73
@noelmoore4474
@noelmoore4474 3 года назад
Great video. I am keen to get onto the HF bands at minimum cost and was very interested in your antenna. I have no garden and wish to build an antenna to fit into my yard. Will this work at half the length for say the 20m and 10m bands?
@arcticpara7775
@arcticpara7775 5 лет назад
Paul , Great Video...great Info..73's WL7NP
@VityaKoresh
@VityaKoresh Год назад
Nice picture!
@markanderson8066
@markanderson8066 5 лет назад
I would be worried that your antenna wire will break at the ring connector due to the strain of also supporting the box and ground rod connection. Better to add a strain relief there I think - it's what I do on mine at least :)
@johnpeterson7264
@johnpeterson7264 5 лет назад
Looks nice. What sort of power handling do you anticipate that it can handle ?
@OM0ET
@OM0ET 5 лет назад
Thanks. Hmm 🤔 i tryed it with my QRP rig and 5W. I don't know what max power it can handle at this moment. Depends on used core i suppose 10 or 20W. My opinion only. 😁
@marcodenbraber3251
@marcodenbraber3251 2 года назад
Paul, Nice job. 73's CE7MDB
@jerryuhte1284
@jerryuhte1284 5 лет назад
Paul, enjoying your info , antenna appears to be working FB ! Does your Radio have a built in tuner ,i wonder if your good readings are being tuned by the internal matching ? Tks, 73,72 , Jerry K9UT
@OM0ET
@OM0ET 5 лет назад
Hi Jerry. Yes it has the internal automatic tuner, but during this test it was turned off. 73 Paul 😉
@rotaxtwin
@rotaxtwin 2 года назад
I want to build a similar antenna for DXing the AM broadcast band, 500 KHz-1600 KHz, any idea how I can determine the impedance of a 'long wire' (relative term on a 300 m band) antenna? I may need a 1:10 windings ratio on a 75 foot radiator.
@eduardopower5254
@eduardopower5254 5 лет назад
Congratulations for the video!!! Neat and clean as usual. Very nice small box. And the clear lid a nice plus! With your call sign. Please when you test it can show the SWR response without the antenna tuner enabled? That way a real idea of the antenna will be displayed. Thanks for your excellence in videos!!! 73 de kk4nww
@OM0ET
@OM0ET 5 лет назад
Thank you Eduardo! I will test it probably this weekend. I will try to made another video. I test SWR response only with disabled ATU. The SWR graphs in the previous video was by ATU disabled too. 😁👍
@bloopero
@bloopero 3 года назад
Does antenna need tuner? BTW another great vid with tones of info.
@OM0ET
@OM0ET 3 года назад
Yes
@bloopero
@bloopero 3 года назад
@@OM0ET Thanks for quick reply😉
@den5zxz757
@den5zxz757 4 года назад
Under what circumstances would you need the Long ground wire ? If you do need it do you still ground it to Earth Ground with the alligator clip? It seems that by using the ground side you are making a Dipole antenna.. Right ?? 73's N5ZXZ
@OM0ET
@OM0ET 4 года назад
This kind of antenna needs a proper ground to have a better efficiency. But I work QSOs also without ground :)
@MichaelSmith-yy8fw
@MichaelSmith-yy8fw 4 года назад
Thank you. Your antennas are so intricate and compact. Much admiration here for your skillful assembly. MikeinMinnesota N0WDM
@OM0ET
@OM0ET 4 года назад
Thank you Mike! 😊 have a nice day and 73 🙋‍♂️ Paul
@Justin-bd2dg
@Justin-bd2dg 4 года назад
Is the radiator wire solid or multistranded?
@OM0ET
@OM0ET 4 года назад
its multistranded
@hakimbaba6533
@hakimbaba6533 2 года назад
😌👍
@realmesmartphone8130
@realmesmartphone8130 4 года назад
73 by..by....from yc7bla thanks
@PeterGURA
@PeterGURA 5 лет назад
Chápem ze takto tvoje videa oslovia oveľa viac ludi ale škoda že si asi jediný Slovák čo robí videa s ham tematikou a niesu v slovenčine. V každom prípade zaujímavá tvorba ale raz z čas môžeš aj niečo po slovensky pridať 😉 nech sa darí. OM0AGP
@OM0ET
@OM0ET 5 лет назад
Ahoj Peto :-) Vdaka ze si pozrel moje videa. Ano je to tak ako vravis, bohuzial v anglictine sa da oslovit omnoho viac ludi a ta snaha aspon takto vyjde viac na uzitok lebo tomu potom dokaze pochopit takmer kazdy na tejto planete kedze je to medzinarodny jazyk a tiez sa daju potom jednoduchsie pouzit titulky ktore vie Google nasledne jednoduchsie prelozit do kazdeho jazyka :-) Priznam sa ze vyuzivam kazdu moznost ked nieco vyrabam ci niekam idem vysielat aby som o tom spravil aspon nejake videjko. Preto si myslim ze vyroba takychto videi v dvoch jazykoch by bola pre mna asi dost narocna :-) Ale par videi aj v slovencine tu mam tiez :-) hoc ich sledovanost je dost nizka :-) Prajem ti 73 a snad aj dopocutia ved som z Vranova. Palo OM0ET
@sandraabarca6029
@sandraabarca6029 5 лет назад
Question? Where can we source the case ?🤔
@OM0ET
@OM0ET 5 лет назад
Here: www.tme.eu/en/katalog/#id_category=100241&parameter_boxes=7&visible_params=2%2C316%2C325%2C324%2C323%2C68%2C69&used_params=2%3A373741%3B&page=9&s_field=artykul&s_order=DESC
@trinitron11420
@trinitron11420 5 месяцев назад
Modified is the correct word, modificated does not exist, I like your video anyway
@hectorpascal
@hectorpascal 5 лет назад
Surely that yellow and white toroid is a very low frequency lossy dust-iron core, NOT a ferrite? Most well-respected ham websites recommend a much more efficient type 43 REAL ferrite for the 20-40-80 bands.
@gortnewton4765
@gortnewton4765 5 лет назад
Sounds good advice, I was going to use a toroid from a switch mode power supply. I had my doubts about it, but I won't use that now. Where do I get a Type 43 ferrite, please? Found it. Amidon.
@karlfell3768
@karlfell3768 4 года назад
@@gortnewton4765 If you plan on going to 80mtrs you should use a type 31 ferrite. Type 43 is good for 40mtr and up. Karl
@gortnewton4765
@gortnewton4765 4 года назад
@@karlfell3768 Good, thank you Karl.
@wiltonsmith3397
@wiltonsmith3397 3 года назад
“Modified”
@OM0ET
@OM0ET 3 года назад
Thanks for correction 👍
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