RX antenna - single wire beverage KIT assembling

This revision is from 2018/01/14 20:15. You can Restore it.

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rev.0.1 2/2017 by Jan OK2ZAW

Feeder BOX

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

  • Part list

PTC_F PTC 5mm piece 1 mA PTC
GL Neon lamp piece 1 V neon lamp
Tr Transformer piece 1 BN-73-6802

TRANSFORMERS winding - very important thing!

    • for 50 ohm coax feed line : 2 turns on primar (coax) and 6 turns on secondar side (loop)
    • for 75 ohm coax feed line : 2 turns on primar (coax) and 5 turns on secondar side (loop)

- Transformer should have 5 + 1 turns. So you wind 5 turns and 1more 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