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## Re: LF: questions about a tx square loop fpr 470KHz

 To: "[email protected]" <[email protected]> Re: LF: questions about a tx square loop fpr 470KHz Roman <[email protected]> Sat, 02 May 2015 00:43:46 +0300 v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1430516627; bh=EqpfX8fao2uAHJPVV/44Xq2RnnI8BL8TOSe2NrkpFYI=; h=From:To:In-Reply-To:References:Subject:Date; b=NpldsgrpetQj6WuTUCYhQsAzeJwKhTSsgTM8IHSHPwY+FA/lYlHsnYyum8EYgBq+x +AR37eEd57F72XRXhaE1hnrzj+arJtENRDZquYlmsrPCKHzuGAse3ND5Ix2JpbQNnt jRFbF9g1ZGP8YnqSgE7j66o9EG5VU8VrWwW89G+U= <[email protected]> <[email protected]cal> <[email protected]> <[email protected]> [email protected] [email protected]
Buongiorno, Mauro!

Alexander R7NT make a semi-LOOP for LF 136 kHz several years ago using Al-Plastick pipes for the water 15mm diametre.

Topic on the russian forum about that expirience:

73!
Roman

01.05.2015, 00:25, "IK1WVQ Mauro" <[email protected]>:

73 to all,

I can made a square TX loop for 470KHz of 7 * 3 meters (see picture) in the terrace of the building where I live (6 floors).

the questions are:

- it is enough a 6mmq copper electric wire ??  (20W is the output power of my tx).
- single turn or two turns spaced 10cm max ?? (two turns =  less pF required to take the resonance).
- Is this a good idea to start to trasmit on 470KHz WSPR ??

73 de Mauro IK1WVQ

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73!