This includes a short detachable length at the car end which comprises a remote up/down press button unit and a cigar plug. The current drawn is just 100 mA. Tuning is achieved by pressing either the up or down button and listening for the signals to peak in strength. This is very noticeable and gets you very close to minimum VSWR. Any fineup/down adjustments can be carried out with the radio's aVSWR meter.
The antenna has a large diameter base coil and can be tuned to any frequency in the range 3.5-30MHz. DC cable length 22ft terminated cigar plug.The item "Diamond SD330 3.5-30MHz HF Screwdriver Mobile Antenna" is in sale since Tuesday, July 31, 2018. This item is in the category "Mobile Phones & Communication\Radio Communication Equipment\Antennas\Ham/Amateur Radio Antennas". The seller is "radiosuperstore" and is located in Woburn Sands, Milton Keynes. This item can be shipped to all countries in Europe, all countries in continental Asia, United States, Canada, Australia.