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Shortwave Listener (SWL) Newbee Question - Is My Dipole Antenna Set-Up Right ?
- If your antenna is fed with coax you don't need a balun.
- The 50 ohm coax is close enough to the 70-or-so ohms - of a plain dipole. - - bob - k5qwg And . . . That 'plain' Dipole Antenna is by-design best used for a single specific frequency. Very Good for Amateur Radio single band operation. Not-So-Good for a Shortwave Listener (SWL) who intends on using the Dipole Antenna across the entire Shortwave (HF) Band from 1.8 MHz to 30 MHz. 1 - Make the Dipole Antenna into a Windom Antenna ( Off-Center-Fed-Dipole ) for better Multi-Band use from a single Antenna. 2 - Use a 4:1 Matching Transformer {Balun} for improved Broad-Band characteristics for Across-the-Band Shortwave Radio Listening (SWL) at the expense of single frequency performance. The "Best" Antenna is not always the 'best' antenna. theoretically speaking - it should not work, but hey... What Works. WORKS ! - iane ~ RHF |
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