HF Back Yard Adventures. Build this Simple Compact Antenna for Your Ham Radio Station.

Got about 30ft of space? 10m for you youngsters! Here are full build instructions for this very simple, but very effective, antenna.
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[@robertallbright]

Brilliant as usual Peter, thanks 73 Robert G3RCE

[@alanthomas8817]

Thanks Peter, wasn't expecting you to say the Discovery was back in stock... just brought one now!

[@jonmcadams5401]

Peter thanks so much for your very helpful videos! Here's another low-cost multi-band antenna option. I have a Xeigu G90 (yes, a great low-cost transceiver) feeding 3 watts into a Xeigu XPA125B 100-watt amplifier. I use the XPA125B amplifier's very robust built in ATU with this antenna and can get an SWR of 1.7 to 1 or better on all bands 160 - 10 meters, including WARC bands. My antenna is a 71-foot end-fed non resonant sloper. The high end is 15 feet going down from a balcony railing to a wooden fence about 6 feet high, with a slight dog leg at the low end to follow the fence line. It's fed from the high end using a 9:1 unun and 50 feet of RG8x. Because the coax feedline braid acts as a counterpoise I have a common mode choke between after the XPA125B amp into the coax feedline. I've made SSB contacts on all phone bands, working stations in Japan, Australia and the US East Coast from California and I regularly check in to 40 and 80 meter nets with good signal reports. I agree that antenna modeling doesn't always show actual antenna performance. Could you possibly do some comparison A/B testing of small garden resonant and non-resonant antennas? Much appreciated!

[@WilliamParmley]

EXCELLENT! Peter -- I finally got around to building this, and this afternoon I set it up and made adjustments. I found some lightweight 1.5 inch diameter plastic pipe and wound that with #22 enameled magnet wire. I started with 36 close-spaced turns and ended up with 33 turns very slightly spread to achieve 34 microhenries. I attached an alligator clip to one end and about 2m of wire on the other. I put up my 20m EFHW wire that I use for portable operation (it's #22 stranded, insulated) then clipped the coil to the end. After adjusting the length of the 40m add-on I ended up with a 2:1 SWR bandwidth of about 125 kHz on 40m and flat, less than 1.3:1 across 20m. Works great and much more compact than my full size 40m EFHW wire. (Last summer I tried to make a compact 40m antenna by cutting my 20m wire in the middle and adding a coil using the shortened dipole formulas. Not only did it not tune up well on 40m, but that concept requires lowering the antenna to switch bands. This is so much better.) 👍

[@michelsinnott]

Thanks Peter, enjoy these practical videos which relates to my situation. Great ideas.

[@AlreadyThere1965]

Thank you, I am always looking for new ideas for antennas to fit my limited space.

[@otterc.9337]

Brilliant!

[@mccooperman]

Thank you Peter… love your channel excellent entertainment and fun too 👍… using previous information supplied by yourself I made this antenna for 40m with loading coil for 80m which worked really well (in fact I purchased a loading coil from you guys then made one for fun)… as I also have a compact garden for a 90 degree angle I used some upvc tube and put a flat top at the inverted v apex so increasing the angles … not sure from a theoretical stand point how it impacted the performance of the antenna but it worked and gave me 80m in a compact garden. Thanks again for sharing. … Dave M7DFM

[@noomnoom8469]

I have a similar setup except it is longer and covers 10-40 (haven't checked resonance on inbetween bands) and 80 with the coil.

[@madcarew5168]

Well said..nothing like getting a 5/9 after spending as little as possible on an antenna then experimenting with position,longer,shorter how to make it

[@alanbiddle]

Very interesting discussion of modeling. At one point I used a handheld log periodic for portable satellite operations. The 2m operation was fine, but the 70cm had a very definite notch in the response. I found that off pointing 15-20 degrees made a significant improvement in the 70cm signal. Not my personal measurement, but someone with the right equipment reported the notch as about 2dB deep.

[@Sidmi5utc]

Hi Peter, I have such an antenna and use it mounted vertically on my spiderpole with the 34uh coil slipped over the pole itself and it works a treat. Good for the DX !

[@kengrey7263]

Hi Peter, I have the same 2m/70cm antenna as you (bought from W&S of course) and I have exactly the same results as you regarding the polar diagram. Very well made, lightweight and low wind resistance. 73 Ken G3WNR

[@AliReza-zx8km]

Nice............. ❤️

[@Paddy_Roche]

Thank you for the video, a question if I may. With the coil fitted and 40m resonant does that also make it resonant on the 15m harmonic? This making it a quad band antenna? I’m guessing No as I think you would have told us, thanks again Peter great video.

[@northwestmorphstony9975]

Thanks for the video, Would a T2LT work if placed over the Apex of the roof ?

[@nicgreek9993]

Hi Peter, than you about your last video, very nice and interesting. I have the same space problems, but I don't have a small garden but a balcony. Which antenna do you suggest? Thank you in advance! 73

[@Yo-uz4sm]

Hi peter love watching your videos,always look forward to the next one,a question for you is would a loading coil work for 80 meters at the 49.1 transformer end as im using a 20 meter length of wire so i get on 40 and 20 already, so to reiterate from the transformer about 2 meters then the loading coil then the 20 meter wire,the reason i ask this my end fed is already up high in a tree many thanks Tony

[@PatAutrey]

Would you also get 15m on this antenna as it is the 3rd harmonic of 40m? If so it's actually a Quad-Band Antenna!

[@grantmuir1522]

Need a bit more help with the 34uh coil can’t find much info on this .........