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Base Antenna guess?
- Thread starter Robalo
- Start date
Someone out there may know what it is but I have no clue. Looks like enough tubing to homebrew something. DX on what band?? What mode? Vertical or horizontal? Beam? What are you looking for? Thinking you're looking for something different from what's in the background of your photos?
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Appears that he is aiming the camera at the pile on the patio, looking at his shadow....
A PDL2 is a good project anytime
The pieces in the pictures look like parts to a PDL2, 2 elements on a short boom, 2 full circle feedpoints with gamma matches, wire coiled up by the boom. I see someone else beat me to it while I was typing.
YES IT IS A PDL-II AV-122 IS MY SUMMER PROJECT IT NEEDS ALOT WORK. I WANT TO TRY SOMETHING DIFFERENT I NEED TO BE BUSY BEFORE THE COVID-19 DRIVES ME CRAZY
Worldwidejack wins the prize, he had the correct answer first.
Never had one but know folks that did and they really liked them. Can be a bit of a bitch sometimes to tune, I understand.
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Never had one but know folks that did and they really liked them. Can be a bit of a bitch sometimes to tune, I understand.
73
Specifications.
AND FROM ANOTHER FORUM ABOUT POWER MULTIPLICATIONS.
And here is the hard part. Every 3 dB of gain doubles your power. Your PDL2 with a DB gain of 12 will double power 4 times over (12/3). So if you input 4 watts the first 3 db will double it to 8 watts. The second 3 db will double the 8 to 16 watts. The third 3 db will double the 16 to 32 watts. The 4th 3 db will couble the 32 to 64 watts. That would give a multiplication factor of 16 for the antenna (64/4).
AND FROM ANOTHER FORUM ABOUT POWER MULTIPLICATIONS.
And here is the hard part. Every 3 dB of gain doubles your power. Your PDL2 with a DB gain of 12 will double power 4 times over (12/3). So if you input 4 watts the first 3 db will double it to 8 watts. The second 3 db will double the 8 to 16 watts. The third 3 db will double the 16 to 32 watts. The 4th 3 db will couble the 32 to 64 watts. That would give a multiplication factor of 16 for the antenna (64/4).
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The PDL2 is a great antenna, I ran one in my CB days. I had it at about 80', worked the world on 11 meters.
Yep. That's what I got out of it too. Doesn't sound worth the battle. Still, you've got your hands on a good antenna. Watch tightening those hubs down when you put it together, I understand they crack easily. I have a couple locals/friends with Moonrakers that had issues with the hubs not long ago. Or maybe you know that already.
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