RX antenna - BOG

Feeder BOX

• This box contains of transformer 450 Ohm to 50 or 75 Ohm and protections

• Part list

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.

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.

Terminator BOX

• This box contains of Load resistors for the antenna and protections

• Part list