Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: VLF: QRSS-240 at 5170 Hz

To: [email protected]
Subject: Re: VLF: QRSS-240 at 5170 Hz
From: Roman <[email protected]>
Date: Sun, 04 Aug 2019 15:59:29 +0300
Authentication-results: mxback17o.mail.yandex.net; dkim=pass [email protected]
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1564923569; bh=yiGQzg7yrMUFvmUOSGAvbzy+PLLvYCgeAEkbPHcXA6E=; h=References:Date:Message-Id:Subject:In-Reply-To:To:From; b=AUwfBVCz2Xxu+GptAz65Pn794S8VKuo91jz+KbeDw6+KhUPPuL17CUcY0DccDfHPY Qhdv4bbn/MOyW9zXJSlvSDHPW6vr96OpYZIij5Mt4tUOev4ekwnr+/XeEdX2+iEfQ+ FZ9Gvagbkj/1AdVTxlgKFhk4ufULHgZ6JHaD+qPU=
In-reply-to: <[email protected]>
References: <CANi3vvs_NzUNbFaxWXaLmKxS7P=mr1KKq2JU2-pa8R4LThiQ-Q@mail.gmail.com> <[email protected]>,<[email protected]> <6DB8451D7F3D3947A5918808A59621EA845B04FF@servigilant.vigilant.local> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
Congrats, Genosse Stefan!
VY readable!

73!
Roman

> Here are results from the post-processing of yesterdays transmission at
> 5.17 kHz. RX sites at DK7FC (tree) in 57.6 km distance and DL0AO in 283
> km distance. Mixing the two orthogonal loops at DL0AO allowed to steer
> the resulting software rotatable loop into and angle where the SNR
> became as good as it can be for that day and time. Now the message is
> completely readable in 283 km distance (4.8 wavelengths). Two versions
> of the result at DL0AO are shown, one from DK7FC.
> 
> TX site: 1130m spaced ground electrodes in JN39WI | 1.7 A antenna
> current at 370 W TX power (higher losses due to dry soil, thus less
> power from the given antenna voltage at the PA)
> 
> 73, Stefan
> 
> Am 03.08.2019 18:08, schrieb DK7FC:
> 
>> BTW today i transmitted "73" in QRSS-240 at 5.17 kHz, starting 08:30
>> UTC. There was a team from a TV channel (Bayerischer Rundfunk) at the
>> VLF RX site of DL0AO and they followed the QRSS coming in on the
>> spectrogram. I hope they will report about it then...
>> Unfortunately it took 1.5 hours to fix two broken wires of the
>> antenna. Afterwards the QRN already set in, so half the message was
>> lost in the noise... Anyway, the 7 is quite doubtless.
>>
>> 73, Stefan
-- 73!
Roman, RW3ADB

<Prev in Thread] Current Thread [Next in Thread>