The antenna is critical for QRP transceivers. The HF bands needs a large antenna for their wavelengths. I've found MicroVert for an efficient small antenna. This antenna has been developed by DL7PE, Juergen Schaefer. JA stations has the Excel sheet to calculate the radiator element length and the coil. The radiator lenght for 7MHz is only 1.33 meters and the counterpoise is 8.2 meters. The counterpoise isn't directly related to the radiation, therefore, you may put it on the foot of the radiators.
I'm trying to use this antenna for my qrp transceiver.
Thursday, December 28, 2006
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