Re: Re: VLF: DJ8WX 8270.004 Hz

[uwe-jannsen@kabelmail.de]

<But why not insert the meter at the low voltage side of the loading coil, or in the ground lead?
Markus, thats the way I did it.

using shunts down to 5Ohm. no chance.
I could try it  with output pwrs at abt 50Wrms. But the V amplification factor from coil winding to winding (Durchgriff) will be vy different to 600Wrms. One cant simply extrapolate the result measured using a lower pwr output.

The only way to find out is measuring the absolute FS by using the equipment of the nearby radio monitoring station (RegTP). I will meet officials of that stn in some weeks.

GL

Uwe/dj8wx

---

Von: rsgb_lf_group@blacksheep.org
Gesendet: 19.01.2014 18:17
An: rsgb_lf_group@blacksheep.org
Betreff: Re: VLF: DJ8WX 8270.004 Hz

---

Hi Uwe, Wolf,

 

maybe the tomcat only tried to eat the mouse, as cat's sometimes do. But there is another eerie possibility: he may have upset it intentionally. After letting Uwe just key the transmitter on and off for him for a few weeks, he now found out that he could frequency modulate it by tampering with the GPS, sending out his secret messages much more efficiently. Uwe, you are nothing more than his slave ;-)

 

> the antenna current is unknown. I lost up to now three instruments by trying. they changed to coal.
By now you must have a decent ampmeter graveyard on your premises ;-) But why not insert the meter at the low voltage side of the loading coil, or in the ground lead?

Hope to see you on again tonight!

 

73, Markus

 

From: wolf_dl4yhf

Sent: Sunday, January 19, 2014 2:26 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: VLF: DJ8WX 8270.004 Hz

Hi Uwe,

umm..  "PPS zero-crossing too flat" was mumbo-jumbo from the software debugging phase.
The reason may just be as simple as "there was no pulse-per-second sync signal from the GPS" at all.

I have similar trouble here every now and then, because the GPS receiver ('mouse' by Garmin) is sitting on a window ledge;
and even though I don't have a cat, I can imagine what has happened in your case ;-)

Cheers,
  Wolf .

...