Re: LF: VLF in Canada

To:	[email protected]
Subject:	Re: LF: VLF in Canada
From:	DK7FC <[email protected]>
Date:	Tue, 24 Jun 2014 00:46:43 +0200
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Hi Joe,

Fine to hear that you're give it a try. Please, don't ask IndustryCanada if the 10mW is RF power of ERP!

To get out a real signal on VLF, there is no alternative to a real largecoil without ferrites! Think about the high voltages... But 100m ofantenna wire is a good start. I remember 550 mH for my 100m kiteantenna. For me it was 2000m of 0.4mm diameter wire :-) Nice work isthat. Takes long but is a funny game :-)


73, GL, Stefan

Am 23.06.2014 21:33, schrieb [email protected]:

Dear Group,
I tried again to get an LOA for VLF. This time, the response fromIndustry Canada was favourable: 10 mW 8.0-8.3 kHz. Yesterday, after afew slight rf burns, and thanks to PA0RDT's miniwhip design andDL4YHF's Spectrum Lab and advice, VLF sigs on 8.277 kHz were heard at200m from the 100m wire aerial. This was a reception outside my backyard! 10 watts from an 1970's keyboard amp (volume control set on 3)were stepped up with an xfmr to a lossy 500 ohm tuning coil peakedwith a ferrite rod for maximum squeal at L=0.35 H.
Is it possible for someone who is not especially enthralled by winding
a mile of 0.7mm wire to use an iron core to make a VLF tuning coil?

73
Joe VO1NA

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LF: Fw: SAQ transmissions 2014-06-29 and 2014-07-02, M0FMT Re: LF: Fw: SAQ transmissions 2014-06-29 and 2014-07-02, hajo . brandt . dj1zb Re: LF: Fw: SAQ transmissions 2014-06-29 and 2014-07-02, Roelof Bakker Re: LF: Fw: SAQ transmissions 2014-06-29 and 2014-07-02, Roelof Bakker Re: LF: Fw: SAQ transmissions 2014-06-29 and 2014-07-02, IK1WVQ Mauro LF: VLF in Canada, jcraig Re: LF: VLF in Canada, Roger Lapthorn Re: LF: VLF in Canada, jcraig Re: LF: VLF in Canada, DK7FC <= Re: LF: VLF in Canada, Markus Vester Re: LF: VLF in Canada, stan, W1LE Re: LF: VLF in Canada, Markus Vester Re: LF: VLF in Canada, DK7FC Re: LF: VLF in Canada - earth loop, Markus Vester Message not available Message not available LF: VLF in Canada - earth loop, mbdittmar Re: LF: VLF in Canada - earth loop, DK7FC Re: LF: VLF in Canada - earth loop, DK7FC Re: LF: VLF in Canada - earth loop, Markus Vester Re: LF: VLF in Canada - earth loop, DK7FC

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