LF: 600m or 630m ?

[Rik Strobbe <Rik.Strobbe@fys.kuleuven.be>]

Hi Stefan,

 

the 40 meter band is from 7.0MHz (= 42.86m) to 7.2 (= 41.67m). The 'error' is 7,2% at the lower band end and 4.2% at the upper band end.

For 20m it is about the same: the band is 14.00-14.35MHz while 20m = 15MHz.

In fact, on HF there are only 2 bands where the wavelength is is named after is within the band (160m and 80m).

 

If we call 472-479kHz (= 635,6m - 626.3m) the 600m band the 'error' is 5.9% at the lower band end and 4.4% at the upper band end.

 

So for me there is no problem in going for a round number, as we do for most other bands.

 

73, Rik  ON7YD - OR7T

 

 

---

Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Stefan Schäfer [Stefan.Schaefer@iup.uni-heidelberg.de]
Verzonden: maandag 16 december 2013 21:41
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: Monitor: 50SM77 Loc KO85SP Frequency: 0.477 MHz (600m)

G..

> Frequency: 0.477 MHz (600m)

Lambda = c / f = (299792458*m/s) / (477000*1/s) = 628.496m ~ 630m.

:-)

73, Stefan/DK7FC