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

["Roman RW3ADB" <rw3adb@rambler.ru>]

Rambler test, Genossen LFers, excuse! 

73!

Roman RW3ADB.

Personal email: rw3adb@ya.ru

I use rw3adb@rambler.ru for LF group only.

2.5.2015 0:47:58 пользователь Roman (rw3adb@YANDEX.ru) написал:

Buongiorno, Mauro!

 

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

 

http://136.73.ru/sloop/index.htm

 

Topic on the russian forum about that expirience:

 

http://136.su/index.php/topic,149.0.html

 

73!

Roman

 

 

01.05.2015, 00:25, "IK1WVQ Mauro" <ik1wvq@stmb.it>:

73 to all,

I would like to know your opinion about this:

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 ??

thanks in advance for your attention.

73 de Mauro IK1WVQ

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73!

Roman, RW3ADB