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Date: Mon, 29 Feb 2016 20:58:25 +0100
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Subject: Re: LF: MF: EbNaut and GPS
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Am 29.02.2016 16:18, schrieb Paul Nicholson:
> Yes!   I'm having fun with transmitting.
That is nice to read. Welcome back :-) You have a good QTH to install 
large wire antennas, just right for the real low frequencies :-)

> I just need to extend the antenna, a few more hundred
> metres of wire strung through the trees, or maybe I
> wind some wire around a bucket instead.
Better hang it into the trees :-) I guess your ground conductivity is 
very high so height is essential. But you know all that :-)

>    Either way, yes
> LF soon I hope and it will be better for EbNaut.  MF is
> a bit of a struggle.  Did you the see the mess my phase
> was in by the time it reached Markus' receiver?
No but i can imagine.
>   LF
> means I can use longer symbols and less ERP.
Yes and don't forget the daytime groundwave propagation of ~ 800 km.

>
> I've ordered yet another 10MHz GPSDO, there are many on
> EBay from China at the moment for a reasonable price.
> When that arrives it will probably go into service for
> a 2-axis LF rx.  It would be fun to put one of those
> steerable spectrograms on LF.
Yes and a LF grabber showing spectrograms for QRSS60 (22 mHz)?!?

BTW, what do you think about that GPS module: 
http://www.amazon.de/Foxnovo-NEO-6M-GPS-Ortung-Antenne-Schnittstelle/dp/B00U3N5LKI/ref=sr_1_2?s=ce-de&ie=UTF8&qid=1456691921&sr=1-2&keywords=arduino+gps
Maybe i will need 1 pps pulses on the remote receivers to get a stable 
trace on VLF.
Do you have an imagination of the current consumption at 5VDC? A few 10 
mA probably, or less?


73, Stefan