RX antenna - BOG

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[<-- Back to beverage|https://remoteqth.com/wiki/index.php?page=RX+antenna+-+Single+wire+classic+beverage] [<-- Web page|https://remoteqth.com/single-wire-beverage.php] rev.0.1 5/2019 by Jan OK2ZAW [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/single-wire-beverage_BOG_dalsi-850.png|noborder] !!Feeder BOX * This box contains of transformer 450 Ohm to 50 or 75 Ohm and protections [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/bog-850.png|noborder] [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/sch.png|noborder] * Part list | PTC_F | PTC 5mm | piece 1 | PTC 100mA | | GL | Neon lamp | piece 1 | neon lamp 100V | | Tr | Transformer | piece 1 | BN-73-6802 | [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/brd-bog-tr.png|noborder] !!TRANSFORMERS winding - very important thing! ** for 50 ohm coax feed line : 2 turns on primar (coax) and 5 turns on secondar side (loop) ** for 75 ohm coax feed line : 2 turns on primar (coax) and 4 turns on secondar side (loop) - Transformer should have 4 + 1 turns. So you wind 4 turns and 1 more as a tap. [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/trafo-bog.jpg|noborder] [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/tr-bog.png|noborder] !!Common mode current choke * Common mode current choke construction * Wind 4 turns on one side than cross to another side of cores and wind rest turns. [https://remoteqth.com/img/ZAW-WIKI/4-way/5.jpg|noborder] [https://remoteqth.com/img/ZAW-WIKI/4-way/6.jpg|noborder] [https://remoteqth.com/img/ZAW-WIKI/4-way/7.jpg|noborder] !!Terminator BOX * This box contains of Load resistors for the antenna and protections [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/bog_term_850.jpg|noborder] * Part list | PTC_F | PTC 5mm | piece 1 | PTC 100mA | | GL | Neon lamp | piece 1 | neon lamp 100V | | R1 | Resistor 2W | piece 1 | Ohm 750 | | R2 | Resistor 2W | piece 1 | Ohm 330 | | R3 | Resistor 2W | piece 1 | Ohm 470 | | R4 | Resistor 2W | piece 1 | Ohm 560 | [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/sch2bog.png|noborder] [https://remoteqth.com/img/ZAW-WIKI/single_wire_bever/brd-bog.png|noborder]