QRP Club

QRP Station => Antennas => Topic started by: PD7MAA on March 21, 2014, 10:12:50 UTC

Title: 20-10m. Endfed antenna on my balcony
Post by: PD7MAA on March 21, 2014, 10:12:50 UTC

I live in a apartment on the first floor so you can imagine my antenna problems....
My balcony however is 10m. long ,so i mounted a horizontal endfed antenna downcaled for 20-10m on the wooden windowframe . Because of the capacity of the wood and the paint overall length was reduced to aprox. 9m.. but provided a near 1:1 swr on 20 and 10m.
First contact on 10m. using 10 Watts SSB was with 5B4AHL (5-9) on cyprus folowed by 9K2QA (5-9) in Kuwait  and 4S7VG (5-8) in SRI Lanka despite of a huge pile-up. This antenna is going to stay HI.
More info about this antenna on my site:http://pa-11019.blogspot.nl/ (http://pa-11019.blogspot.nl/)

Have fun
73, John

Title: Re: 20-10m. Endfed antenna on my balcony
Post by: sm5mek on March 21, 2014, 16:51:25 UTC

Quote from: PD7MAA on March 21, 2014, 10:12:50 UTC

I live in a apartment on the first floor so you can imagine my antenna problems....
My balcony however is 10m. long ,so i mounted a horizontal endfed antenna downcaled for 20-10m on the wooden windowframe . Because of the capacity of the wood and the paint overall length was reduced to aprox. 9m.. but provided a near 1:1 swr on 20 and 10m.
First contact on 10m. using 10 Watts SSB was with 5B4AHL (5-9) on cyprus folowed by 9K2QA (5-9) in Kuwait  and 4S7VG (5-8) in SRI Lanka despite of a huge pile-up. This antenna is going to stay HI.
More info about this antenna on my site:http://pa-11019.blogspot.nl/ ([url]http://pa-11019.blogspot.nl/[/url])

Have fun
73, John

Good work John, adapt to the enviorment as a leader said to me once uppon a time. (Looong ago)

Title: Re: 20-10m. Endfed antenna on my balcony
Post by: GM0LVI on March 21, 2014, 20:04:55 UTC

Thanks for the link to your blog John, you've some very useful designs there. I've bookmarked it for future reference.

Title: Re: 20-10m. Endfed antenna on my balcony
Post by: IZ5ZCO on March 26, 2014, 13:27:06 UTC

Absolutely perfect instructions (http://pa-11019.blogspot.nl/2011/06/20m-endfed-halfwave-antenna.html)! Many thanks!  :)

Title: Re: 20-10m. Endfed antenna on my balcony
Post by: VE2TH on April 20, 2014, 00:10:22 UTC

Hello John,

I love it and keep it for future reference.

I want to try especially the EFHW = End fed Half Wave antenna, but have to wait to warmer temperature
here :--)))

All the very best and hope to meet you on the air too.

72, Michel VE2TH  QRP & QRPp