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Re: LF: DK7FC_OE5ODL_137kHz

To: [email protected]
Subject: Re: LF: DK7FC_OE5ODL_137kHz
From: Stefan Schäfer <[email protected]>
Date: Fri, 20 May 2011 10:17:19 +0200
In-reply-to: <1305873367.1548.22.camel@gerhard-desktop>
References: <[email protected]> <[email protected]> ,<[email protected]> <[email protected]> <1305873367.1548.22.camel@gerhard-desktop>
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Hello Gerhard, Lubos, LF,

G3XIZ seems to transmit a beacon signal in QRSS-3 just below 137.7 kHz. Maybe he is further improving the system. He is very weak visible here, probably having a QRP signal. Unfortunately i cannot go much below 40 W with this PA since the driver uses the same supply as the PA itself....

Conds seem to be good this morning, QRN is gone, at least now.

Good luck all with improving antennas and receivers :-) I'm going to build a step down converter (320 VDC -> 0...320 VDC) to control the TX power of my new PA, using a TL494...


73, Stefan/DK7FC

Am 20.05.2011 08:36, schrieb Gerhard Hickl:
Lubos, Stefan !

Ossi is transmitting with about 1W input and he plans to leave the
transmission running when there is no other activity from him.

73

OE3GHB
Gerhard



Am Freitag, den 20.05.2011, 06:59 +0200 schrieb Lubos OK2BVG:
Hello Stefan, LF!
Your QRSS3 transmission has been useful, I improved  my receiver. Than
I continued in QRSS60. My final snapshot of Ossi´s signal shows
S/N=22dB. It is not QRP signal, it is QRO here  :-)  ...(the
unstability is my RX problem, I have to fix it)


73!


Lubos




______________________________________________________________________
Date: Thu, 19 May 2011 14:28:09 +0200
From: [email protected]
To: [email protected]
Subject: Re: LF: Beacon

Hello Lubos,

Thanks for the feedback. I just set up a beacon for you: Mode QRSS-3,
QRG: 137.75 kHz (distant to the QSO mode region). TX pwr is reduced to
40 W. Repeating each 10 minutes. Not sure how long i will run it but
some hours.

OE5ODL is transmitting QRP on 137.775 kHz.

QRN is VERY strong here due to local lightnings!! See:
http://www.blitzortung.org/Webpages/index.php?lang=en&page=1

73, Stefan/DK7FC


Am 19.05.2011 06:16, schrieb Lubos OK2BVG:
         Hello Stefan!
         As you know, I am testing some LF antennas. Your signal would
         be useful, but I have read your e-mail until today. Can you
         transmit during a day and in the evening in QRSS3 mode?
         Give me the frequency, I will try to see your signal. My RX is
         on 136170 now.
         Thanks!


         Lubos, oK2BVG


         ******************************

         >  Date: Wed, 18 May 2011 22:08:38 +0200
         >  From: [email protected]
         >  To: [email protected]
         >  Subject: LF: Beacon
         >
         >  LF,
         >
         >  Due to bad conds and high QRN i decided to do some beacon
         transmissions.
         >  QRG is 136.173 kHz, mode is QRSS-60. It is currently running
         and i will
         >  transmit the whole night through, just for fun.
         >  Despite the bad conds, maybe someone will see something i
         hope :-) Does
         >  someone want to join in?
         >
         >  73, Stefan/DK7FC
         >



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