Mount this antenna in your attic, on the side of your house, or on a mast above your roof and it will pull in lots of ...

[David] wasn’t completely unprepared, as he did have the loading coil for his portable 20 m antenna, but was missing the telescoping whip. He calculated the whip length should be around 20 cm ...

Both cover the whole frequency range, but can be optimised for gain in certain bands by telescoping the feed horn between detented ... to eliminate the need for customers to purchase multiple antennas ...