Re: LF: More EbNaut 137.777

[Markus Vester <markusvester@aol.com>]

Ok Andy, you're right, I forgot the squares.

 

But then, citing your email from Nov 19:

 

> Re: LF: RE: Re: Antenna relays - multifilar Litz coil
>...

> So R becomes R/SQRT(2)

> Coil circulating current  will double,   so additional loss is 2 / SQRT(2)

...should 've been 2^2 / SQRT("), or not? Hee hee, one for you, one for me;-)

 

73's, Markus

 

-----Ursprüngliche Mitteilung----- 
Von: Andy Talbot <andy.g4jnt@gmail.com>
An: rsgb_lf_group <rsgb_lf_group@blacksheep.org>
Verschickt: Sa, 28 Nov 2015 3:19 pm
Betreff: Re: LF: More EbNaut 137.777

Bit late replying to this !

You forgot to show the squared term, although the final value is correct

1579 * (10/36145)^2 = 121uR

SO.....  How come no one else spotted the equation worked out incorrectly :-)

'JNT

On 26 November 2015 at 23:50, Markus Vester <markusvester@aol.com> wrote:

>> How can I estimate Rrad for a 100m wire at 10 m average height on 8.3 kHz? 

  
1579 ohms * (10 m / 36145 m) = 121 microohms
  
 ...