Some are better than others. Using the screwdriver antenna as a variable tuning section works well and the higher bands are better then the lower bands unless you do certain things. A massive radial field is very good but a modest one can work well. I have used screwdriver antennas for an apartment application.
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Diamond Antenna Mobile Screwdriver Antennas SD330
Screwdriver Antenna Maximum Height: Quantity: Sold individually. Notes: Actual antenna heights are approximate measurement. Changing the included top element allows 7 to 50 MHz operation. If you are looking for a "covers it all" mobile HF antenna, Diamond Antenna has a solution for you! These adjustable mobile antennas use a simple volt system to change the electrical and physical length of the antenna while you sit inside the car.
Tarheel V Diamond Screw Antenna as homebase
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