Re: LF: Re[2]: LF: Re[2]: LF: Loran and Alpha

[DK7FC <selberdenken@posteo.de>]

Hi Alex,

Thanks so far. Is there no chance to put a second soundcard to the USB of the PC so you can run two grabbers? Would the internet connection allow such a data rate? I think it would be a better solution, and more challenging! Reaching such a distance is not unrealsitic. Maybe you could even install a RX loop pointing to NE/SW.
Next, do you know how to set up a spectrogram in SpecLab using something like 10 uHz FFT bin width and a suitable reference signal? Leaving a trace on your side is not easy, we may need several attempts, so it may become to much effort if you have to go the the second location each time...

73, Stefan

Am 06.11.2016 19:14, schrieb Alex K:

Hello Stefan!
The computer of the grabber has only one sound card on which the signal from the LF receiver is given. Therefore in the nearest future I won't manage to adjust also VLF reception on the grabber. However, I have one more reception position where there is a VLF receiver (but no internet :( ). I could try to accept your VLF carrier if I will know the moment of the beginning of transfer in one-two days that to adjust everything.

Воскресенье, 6 ноября 2016, 21:03 +03:00 от DK7FC <selberdenken@posteo.de>:

Hi Alex,

Do you also run a VLF grabber there? Or would it be possible?
One day i would like to try a test on VLF using a carrier and/or EbNaut. And i think you are the man to ask about that. Is there any interest?

73, Stefan

Am 06.11.2016 18:55, schrieb Alex K:

Hello LF, Mike.
On the website of my grabber http://rn3aus.136.su/grabber.html  it is possible to see screenshots of the signals decoded at the moment also. The archive of decodes (Op32Rx software) and opds is also available. Perhaps, it will be interesting that the grabber is completely automatic. Computer, receiver, power supply system and recharge of the accumulator, heating system and control system - all this is established in an uninhabited lodge (shower cabin) on my seasonal dacha. In the winter nobody lives in radius of several kilometers, only the grabber "listens" to air and upload spots and decodes by the 3G-modem. I can also operate the grabber remotely. So when you receive decodes from my grabber, imagine the snowy forest and a small dark and cold lodge where day and night the grabber automatic machine works... :)
73 de rn3aus/Alex

Воскресенье, 6 ноября 2016, 17:07 +03:00 от "Mike Dennison" <mike.dennison@ntlworld.com>:

The good condtions to Russia were confirmed by Op32 results on
137kHz. I received R7NT at 1818, 2218 and 0322UTC. My transmissions
were reported by RA3TGZ (2859km) at 1921UTC and RN3AUS (2420km) at
2106UTC. 2E0ILY made it to RN3AUS (2523km) at 2149 and UA4WPF
(3503km) at 2153.

Mike, G3XDV
============
 
> Yesterday and tonight, Loran stations from the Russian Far-East chain
> (GRI 7950) have become visible here: Ussuriisk, Alexandrovsk
> (Sachalin), and also weakly Petropavlovsk (Kamchatka) which is quite
> rare. Thus LF conditions over northerly paths seem to be favourable
>
> American eLoran from Wildwood (New Jersey, GRI 8970) has been on air
> regularly since Sep 21st.
>
> On VLF, the Russian Alpha station Krasnodar has apparently been off
> air for a couple of months since Sep 12th. So RSDN-20 is running only
> "on two legs" (Novosibirsk and El-Ban) and would be unusable for
> navigation. Does anyone in the group happen to know details about the
> outage?
>
> Best 73,
> Markus (DF6NM)
>
>
>
> -----
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