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HAM RADIO Small Garden 80m-10m 5-Band Antenna. Self-Build. No ATU needed. Read notes below:
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- Опубликовано: 8 фев 2022
- Here is the complete solution for an 80m-10m 5-Band Antenna for a small garden. You can home-build this antenna at a very low cost. No ATU needed. Enjoy HF operation from your small garden.
To Build the Basic Antenna, watch the video below.
• Ham Radio END FED HAL...
To Purchase the Discovery TX500 Click the link below,
hamradiostore.co.uk/discovery...
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You can purchase a ready made coil from us.
hamradiostore.co.uk/search/?q...
Thanks for supporting this channel. It is filmed and edited by Peter Waters G3OJV. All music is composed and recoded in the Studio.
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Thanks for sharing this design. Similar designs have been popping up on the Internet from Europe and the USA. I made an end-loaded EFHW here, and my "garden", as you say, is very small. With the power lines running across the rear fence line and the house drop across one side, my usable space out back is about 22' x 45', or 7 meters x 14 meters.
I made my EFHW as an Inverted-L, the high end up 10 meters and the remainder sloping to a 3 meter pole. The coil is physically larger, wound on a length of waste water drain line, 4" in diameter (100mm more or less) an 40 turns of insulated 14 gauge wire. It's 102 uH. The end wire is 7' long (2.4 meters or so). My SWR curve on 80 is almost identical to your model, and it is the first 80 meter antenna that actually fits in my tiny yard!
I have been running with this antenna on FT4band FT8 and have done quite well. An interesting antenna, and I wish that I had tried it 50 years ago when I first got on the air!
73, Keith, WB2VUO here near Buffalo, NY
Nice sharing both of you. Thanks YG1BKV OI33 Indonesia RR 73.
Its totally refreshing to have someone explain amateur radio in a simple way ...not all of us work for NASA..lol. 73s M7DMB
This is one of my favorite channels; keep up the good work!
Thanks, will do! 73 Peter
Exactly what I have at home Peter and it works great. Thanks for all the good practical info
Many thanks Alan. 73 Peter
I love these videos. Brilliant, practical advice!
Glad you like them! 73 Peter
We Love you ...from GLOUCESTER MASS USA>>> 😀❤
Fabulous video !
Many thanks!
I recently installed a EA80DXS antenna. It is 20 meters long and while it won't cover the whole 80 meter band it will easily 3.5 to 3.6 MHz without a tuner. I did have to add about 0.5 meters to each end. I am only able to get it up a little over 6 meter but I am quite pleased with it's performance.
Great vid & tnx!🇺🇸
MAny thanks. 73 Peter
Very well presented video Peter. A roly coil on the base of a 40m vertical with a few radials slapped on the fence got me local and long haul dx
Qso,s From a wee corner of the garden.
Thanks for sharing. 73 Peter/
Nice....................................
Thanks
love your videos so helpful ,just a bit of advice when cutting pipe twist the pipe to start the cut.
Good tip! 73 Peter
Thanks for sharing fully enjoyed watching 👍👍👍 73’s Phil M6dnu
Many thanks
Great ideas here!!! Robert K5TPC
What changes to the coil or the stub would you recommend if I wanted to target 3.850 MHz? Can a really short stub get me this high in the 75/80m band? Thanks!
Very bright, instructive video. Thank you, sir. Many good pearls of wisdom.
What I don’t find answers for, but you touched upon in this video ( I believe it was this one, I’ve watched several this evening.) is the
question of how much coax in ft or M. is recommended
for a 130 ft. EFHW antenna?
16-18 ft off the ground.
Some say a long coax is better. Others say no matter.
Is there an exact number, and how is it derived?
Thank you & 73
So nice of you
Is there any reason the coil couldn't be wound on a toroid to reduce the number of turns needed ?
👍👏👏
Thanks. 73 Peter.
Every day's a school day.
I’m confused, I got that you made a choke and I see that I can purchase it already built, but what are the wire lengths for the EFHW and where do you wire the coil?
Length is Half Wave on lowest band - your garden decides what you can fit in. The line isolator is NOT connected, you simply wind some turns of coax around it
Peter, I am building this same antenna. Some hams say to use a 110 microH coil while others use an 80 microH coil. Will they both work? What size of microH coil will block an 80 meter signal? Is there a formula for these blocking frequencies? For your 20/40 meter vertical you recommend a 32 microH coil to block 20 meters but pass 40. Would you please add your comments?
Both values work, but the tuning stub length will differ. 73 Peter
Great video thanks, I’m in the process of putting up a 80m halfwave end fed. Would this trap work for me to get 160m out of my antenna, guessing it would be a bigger choke. It would be excellent to get all the bands out of my 80m hwef.
You need a much bigger choke. I may investigate this but it would be very narrow banded. 73 Peter
@@watersstanton Hi, i have the same question how to make 80m HWEF for 160m? Have you figured the impedance of the choke? many thanks. 73 Ras
Probably a silly question from an amateur ham - I have a G5RV up at the moment, which gives me 80 mtrs. - now, if I disconnect the ladder feed, short the two 'legs of the antenna together, and end-feed it with a 49 - 1 unun, will I get somewhere near Top-band?
It is unlikely that the total amount of wire will equate to a half-wave on 160m = 254fr?. Sorry! 73 Peter
@@watersstanton = Yes 2X120 = 240 - a bit short!
Hi Peter, is there any chance you could show us how to do the firmware update on the TX500, cheers Adam G7CRQ
There are full details on the Lab599 website. As I am Mac based I cannot update myself but my tech guys in Portsmouth say it is well documented on the factory web site. 73 Peter.
@@watersstanton hi Peter I'm not that computer literate, I just use computers to browse the internet and email I've looked at lab599's website and the firmware update looks like rocket science to me, be easier with a video for some of us that are a bit behind the times with modern technology and are a bit nervous about bricking their equipment during a firmware update.
What is the code number of the Diamond coil please? Are they available without the kit? You had another video with a similar coil but I have not had any luck buying one. I can not construct due to physical problems. Regards
The coil is not available as a separate item. But you can purchase an identical coil from us. hamradiostore.co.uk/watson-ojv-80k.html. 73 Peter
@@watersstanton Thank you for that. I will try to purchase. Regards
@@watersstanton Unfortunately your sales system will not accept my visa card even though it is approved by my bank. Have to think of something else.
Me again. Bizzarely the same setup as i have at home.
This principle can also design on shorter antennas where space is critical. You may not get the full range of bands. You might not need 80m but you could design a shorter 40m. Or use traps to add other in between bands.
MM7DKY
Check out this ruclips.net/video/SUa_6HGI8bw/видео.html
I love these videos, quick question, if you add 75uh onto a 40m antenna, what inductance would you need to add to an 80m antenna to get 160m?
Thanks
Probably around 200uH.
Good video❗️73 KV5P
Thanks 👍
Great video Peter - I’m moving to a small unit with no garden with a metal roof and car port below - have ordered a SlinkTenna from the States - it’s basically two ‘slinkies’ or coiled antenna that stretch out each side to about 6 foot each way with a 9:1 Unun - check it out on RUclips!
Hi Danny. Sounds interesting. Hope it works out well. 73 Peter
Once it finally arrives maybe I’ll do a video on it - minus a jumper of course LOL
40mm = 1.5" and 5cm = 2"....
The U.K copying the Chinese, you've got to laugh...