|
Stefan, I guess you could just connect the
230V terminals of your generator to the earth electrodes, and throttle up
the carburettor a bit...
Best 73,
Markus
Sent: Thursday, May 05, 2011 9:06 PM
Subject: Re: ELF: Zevs
Hmm, well.... I've done some tests on 1970 Hz and haven't come
very far. Just a poor signal in 5 km distance. But the QRM is very high there. I
think in your utilities assisted earth mode i will work some km. Would be
interesting about a QRO test ;-) I could use my LF TX antenna and ground it at
the far end, i would achieve a loop with 2700 m^2 but even that wouldn't be
enough to reach the next amateur station i think.
To many projects in the
moment, like building up the LF stn and improving the RX and so on. But maybe
i'll go back to 1970 Hz if i can do some better local tests on the earth
antenna...
73, Stefan
PS: Sounds like i become old? No!
;-)
Am 05.05.2011 20:29, schrieb Roger Lapthorn:
If you use your earth electrode antenna Stefan you will not need
the coil. Try it and see how far it gets at this much lower
frequency?
73s
Roger G3XBM
2011/5/5 Stefan Schäfer <[email protected]>
Markus, If you wind the coil,
i'll try it! Ah, BTW, a simple mains transformer would do the job!
Driven by the H bridge and SL as the driver. Trivial ;-) 73,
Stefan Am 05.05.2011 18:44, schrieb Markus Vester:
Hi Stefan,
that window looks like a challenge for your transmit earth antenna as
well ;-)
Best 73,
Markus
--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
https://sites.google.com/site/sub9khz/
|
|
