QRP Station > Antennas

Low-cost ½ λ Dipole for HF QRP rigs

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vu2nan:
This is the antenna I strung up ages ago, when I had hombrewed my vacuum tube transmitter and couldn't wait till I had acquired some coax!

http://nandustips.blogspot.in/2011/02/low-cost-dipole-antenna-for-hf-qrp-rigs.html

73,

Nandu.

GM0LVI:
I like it Nandu. Simple,light and cheap!  :D

PG4I:
another secret tip: when you use twin lead electricity appliance wire (the wire which plugs into your 110/220 V sockets), you impedance will be near 50 Ohms symmetric. You only need a 1:1 balun at the end of the wire.  ;)

KC8AON:

--- Quote from: PG4I on December 29, 2014, 09:38:18 UTC ---another secret tip: when you use twin lead electricity appliance wire (the wire which plugs into your 110/220 V sockets), you impedance will be near 50 Ohms symmetric. You only need a 1:1 balun at the end of the wire.  ;)

--- End quote ---

The impedance on the wire you are speaking of would calculate out to around 105 ohms, but still only a 2:1 swr thus a 2:1 balun or transformer would be needed.

vu2nan:

--- Quote from: GM0LVI on December 27, 2014, 10:29:17 UTC ---I like it Nandu. Simple,light and cheap!  :D

--- End quote ---
Thanks, OM Dave!

73,

Nandu.

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