3 Feb 2015
472kHz WSPR
No new stations spotting me or being spotted, today. My best report was from G3WCB (101km) and my best DX on RX is again DK7FC (669km). I am still using the earth-electrodes and 5mW ERP.
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3 comments:
Hi Roger,
- How you match the impedance of the antenna ??? (It is necessary a classic "variometer" as used with "marconi" antenna ??)
- is the position of the TX (middle point or near a electrode) important ???
73 de Mauro IK1WVQ
I used 3C90 step down transformer (42mm toroid) after resonating a loop. For an earth-electrode antenna I used a step UP 3C90 42mm transformer with tapped secondary. At old QTH the ground was close to 50 ohms and no transformer was needed. No variometer needed.
My 3C90 toroid is located in my shack.
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