The shorter bottom shaft does not tune as well. I tried it. Got get the coil higher for less reflect.
I was the first to ask kale for a longer bottom shaft.
He made me a 21 in. later he started offering the 22 in. as an option.
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Antenna placement
- Thread starter boomer111
- Start date
The shorter bottom shaft does not tune as well. I tried it. Got get the coil higher for less reflect.
I was the first to ask kale for a longer bottom shaft.
He made me a 21 in. later he started offering the 22 in. as an option.
You can search forever for the magical spot where the antenna has a "perfect", non-reactive match to the feedline ... the spot where it's "flat" across the whole band - meaning the whole HF spectrum.
Or, you find the place where it works and get on the air. If an amplifier balks at 1.5:1, it's not worth the money - and it's illegal anyway.
Or, you find the place where it works and get on the air. If an amplifier balks at 1.5:1, it's not worth the money - and it's illegal anyway.
I would love to have a mobile antenna like that. resonate from 1.8-30 mhz. LOL
rich
How much bandwidth an antenna has is inversely proportional to how well it functions. Or, as bandwidth goes up performance goes down.
To further add to that, even the longest antennas in a mobile environment are highly inefficient at the lower frequency ham bands. In some cases you would be doing well to get 2% or 3% efficiency, and that is through the longest antenna you can reasonably put on a vehicle during mobile operation and a setup where everything is as good as it can possibly be. Think about how well an antenna would work when 97% to 98% of your transmitted signal does you absolutely no good, and when it comes to reception things are just as bed. That being said, people have done it and made contacts, so it is definitely possible to do. To put that in perspective, 160 meters will see that 9 foot CB whip like a CB would see a 6 or 7 inch antenna. Remind me again, how well does a CB work with that short of an antenna?
The DB