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Re: AW: LF: Re: DK7FC's 3rd VLF transmission

To: "[email protected]" <[email protected]>
Subject: Re: AW: LF: Re: DK7FC's 3rd VLF transmission
From: Rik Strobbe <[email protected]>
Date: Tue, 23 Mar 2010 09:12:19 +0100
References: <[email protected]> <38A51B74B884D74083D7950AD0DD85E82A1B81@File-Server-HST.hst.e-technik.tu-darmstadt.de> <[email protected]> <56800827A5644E1BB3F320CB51E2300E@Black> <26E279AD762E44FB937A8A7DF8F934BC@Black> <8C7F2923D86B4517B1C156BA499E96E4@Black> <F277E8E705B545489E6506C9E10C1225@Black> <bd8.4bf8185f.38d7802a@UNKNOWN> <B25CA16D1AFD4B7E889CB2E75FC2F8FE@White> <29746320.1346347.1269244849281.JavaMail.fmail@mwmweb078> <[email protected]> <[email protected]>
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BTW: We could philosophize what is the definition for "DX" on LF and VLF! Or is there a standard definition? In my ham licence i learned that on HF, DX is outside the own continent and on VHF it is above 300km. So, what is it for LF? And what for VLF (by hams)?

Stefan,

a philosophical approach to define DX : distances that are a challenge.
What would mean that what is considered DX can differ from band to band and on the same band even  from one station to another: running 1W ERP on 137kHz DX could be 5000km or more , running 1mW ERP it could be 500km or more.
I have always had a bit of a problem with the "outside the own continent" definition. For a ZB2 station it would mean that CN (can be as close as 10km) would be DX while UA (at up to 4000km) would not be DX.

73, Rik  ON7YD - OR7T

PS: as it returned from a family visit last Sunday I saw your announcement and just hooked up the 500kHz antenna (11m high and 25m long lazy L) to the sound card. I could see something going on at 8970, but too weak (and too much QRM/QRN) to decode. It time permits I will try to bring the antenna to resonance at 9kHz for you next test.
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