Thingiverse
Loop Antenna by Branez
by Thingiverse
Last crawled date: 3 years ago
Loop antenna for reception of medium and short waves. The antenna is tuned by varicap diode BB510. Instead it can be used BB112 1SV149 or similar varicap diode with High capacitance.
The entire frequency band is divided into three parts: 500 - 1800 kHz, 1800kHz - 7MHz, 6,8MHZ - 28MHz.The coils are wound with 45 X 0,04 Cu/S litaz. With this litz is reached a bigt Q factor.and good selectivity and directivity, so we can turn it in to the direction of a weaker signal for better reception of this and elemination of annoying stronger signal.
The larger ring is made of a cover of a 10mm wide cable channel and here is wound18 turns with tap at 5. On a smaller ring is a 2 turns coil + 1 turn as link to receiver..
The entire frequency band is divided into three parts: 500 - 1800 kHz, 1800kHz - 7MHz, 6,8MHZ - 28MHz.The coils are wound with 45 X 0,04 Cu/S litaz. With this litz is reached a bigt Q factor.and good selectivity and directivity, so we can turn it in to the direction of a weaker signal for better reception of this and elemination of annoying stronger signal.
The larger ring is made of a cover of a 10mm wide cable channel and here is wound18 turns with tap at 5. On a smaller ring is a 2 turns coil + 1 turn as link to receiver..
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