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Author Topic: Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.  (Read 1567 times)

gil

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Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.
« on: June 28, 2017, 04:15:14 PM »

Gil.

cockpitbob

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Re: Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.
« Reply #1 on: June 28, 2017, 11:04:52 PM »
Nice.  And I liked the music.

I like the simple, take-down design with the clothespins.  I couldn't quite figure out what you were doing with the propane torch.  I remember you were inquiring about aluminum solder, but I didn't see anything that looked like 2 pieces soldered together.

gil

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Re: Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.
« Reply #2 on: June 29, 2017, 02:30:58 AM »
Thanks Bob  :)

Quote
I remember you were inquiring about aluminum solder, but I didn't see anything that looked like 2 pieces soldered together.

Well, that's because it didn't work :o The reflector is missing 3cm... I taped the piece on for now, but I need to find a way to permanently attach it with a good electrical contact.

Gil.

Jon_Garfio

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Re: Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.
« Reply #3 on: June 30, 2017, 07:33:35 AM »
I watched yesterday the video, no glamour but simple and effective.

Some day I will make anything like this for 50 mhz.

Thanks for show us, Gil.


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cockpitbob

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Re: Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.
« Reply #4 on: June 30, 2017, 09:42:52 AM »
Thanks Bob  :)

Quote
I remember you were inquiring about aluminum solder, but I didn't see anything that looked like 2 pieces soldered together.

Well, that's because it didn't work :o The reflector is missing 3cm... I taped the piece on for now, but I need to find a way to permanently attach it with a good electrical contact.

Gil.
Could the rod have anodizing that needed to be sanded/filed off?
I've always wanted to solder aluminum but never put any time into that.  I've seen a salesman demonstrate aluminum soldering at a car show and it looked pretty simple.  I wish I had bought some rods to try.
In a class I learned to gas welded aluminum (oxy acetylene) and it's tricky as hell with everything needing to be clean and all oxide removed.

gil

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Re: Building a Portable 6-el. VHF 2m Yagi-Uda Antenna.
« Reply #5 on: June 30, 2017, 05:01:55 PM »
Quote
Could the rod have anodizing that needed to be sanded/filed off?

Hi Bob, I did sand it. Either the brazing rods I got from China are crap, or it just wasn't hot enough, maybe both. I need to find someone locally who can help me out... I should have used brass or copper rods and be done with it...

Gil.