Gamma Match made from Copper 2M 1/2 Wave Antenna

How I made a half wave antenna for vhf out of copper

[@grumpy_ken]

inspired by this video, I made a dipole for 1090MHz ADS-B aircraft transponders with a gamma match made from the inner shield of RG6 coax, it's dielectric and the center conductor as the movable rod. at 1/16 wavelength, the capacitor is only 8mm long. great experiment and I was able to get a 1.1:1 match even using 75 ohm coax. I will be using gamma matches a lot in the future!

[@soodwah]

Is there a way to calculate the length of what the gamma match might be? I want to make an 11m yagi and would like to use a gamma match

[@madeinfoxtrap5539]

I use 1/16 of a wavelength

[@W1RMD]

That I know of, you cannot solder aluminum except for zinc "brazing" rod and that is corrosive to electrical wiring. You definitely will never solder aluminum (aluminium) with electrical solder. Oops, I thought you were Irish. I guess it's aluminum in Canada. I love your designs, especially your lawn chair halo for 6 meters! Take care an 73!

[@madeinfoxtrap5539]

@@W1RMD thank you and thanks for watching ! I am on the island of Newfoundland. 73 De VO1DV

[@Radionut63]

I would NEVER have thought about cutting open a T connector like that... OMG! Geez, wiz kid! Nice job!

[@madeinfoxtrap5539]

Thanks ! Sometimes you have to think outside the box..

[@Cardassiaprime]

Nice build, and the gamma match nicely explained. Thanks for sharing. 73 de M7PBX.

[@madeinfoxtrap5539]

Thanks ! Check out my other videos on this channel to see some of my other creations and share with your friends. 73 de VO1DV

[@MatthiasLenardt]

Beautiful!!!

[@madeinfoxtrap5539]

Thank you!!

[@MatthiasLenardt]

​@madeinfoxtrap5539 Meanwhile it tested it out and it creates wonders. I will never make a dipole with using this system. I used small trimming capacitors. It is such a fun tuning the antenna. Thanks again

[@BornAgain717]

That is a very nice, clean looking job!

[@stahme10]

This is what the hobby is all about. Thanks for sharing.

[@madeinfoxtrap5539]

Thanks for watching ! Share with your friends who may be interested.

[@gbltheolechurch5acrehomestead]

Like #1! Interesting my friend…I was in CBS this past weekend! I renovated a full kitchen!!! Well done with this antennae my friend…my father had one like this for his CB radio!!!!

[@madeinfoxtrap5539]

Thanks ! If your Dad had a CB antenna it was for 27MHz on the 11 meter band and would have been much longer than this antenna which is only 1 meter long and is a half wave antenna on the 2 meter band from 144 - 148 MHZ. If your Dad had a copper antenna for CB it was most likely a 1/4 wave on 11 meters about 8 1/2 feet long. Thanks for watching and share with your friends.

[@Roddy1965]

Shockin' good b'y! Very nice handy work. I used to live in town and then St Philips, up the mainland now. I miss Newfoundland (but not the weather!). VA3KRT.

[@madeinfoxtrap5539]

Thanks ! Snow in Foxtrap today. 73 de VO1DV

[@glenmartin2437]

Thank you.