Message-ID: <003301cceb30$e8d8ed70$0401a8c0@xphd97xgq27nyf>
From: "mal hamilton" <g3kevmal@talktalk.net>
To: <rsgb_lf_group@blacksheep.org>
References: <1357c3ccc91.marcocadeddu@tin.it>
Date: Tue, 14 Feb 2012 15:54:18 -0000
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Subject: Re: LF: DK7FC received in South India
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It is not easy. Mosquitoes as big as Blackbirds !!!!!!!!!!!!!! Nasty bites
es bad dose of Malaria. Medicine man very busy

----- Original Message -----
From: <marcocadeddu@tin.it>
To: <rsgb_lf_group@blacksheep.org>
Sent: Tuesday, February 14, 2012 2:20 PM
Subject: R: LF: DK7FC received in South India



Hello Markus!

Thanks for your nice job! Hope to be ready with my
antenna before you come back to DL: at least Stefan help you to avoid
to forget EU.... ..
By the way I'm quite worried for you: I saw in the
picture of the palm shed the size of the mosquito net! ;-)

73, Marco
IK1HSS
----Messaggio originale----
Da: markusvester@aol.com
Data: 14-
feb-2012 11.55 AM
A: <rsgb_lf_group@blacksheep.org>
Cc: "Stefan Schäfer"
<Stefan.Schaefer@iup.uni-heidelberg.de>
Ogg: LF: DK7FC received in
South India

We are currently in Kerala (India), and I have taken along
an LF receive setup consisting of active E-probe, FiFI-SDR IQ receiver,
and my netbook. Due to other activities, limited notebook battery life
and lack of internet connectivity, it is not possible to run a
continuous grabber from here, but I couldf arrange a few receive
sessions, either around local midnight or before sunrise (details given
below).

At night, HGA 135.43 kHz was up to 58 dB SNR, and both HGA
and DCF were clearly audible. HGA could still be detected at about 12
dB SNR at midday. So far, signals from DK7FC were positively received
on three occasions. I have asked Stefan to temporarily QSY 0.2 Hz down
to evade an erratically appearing local line. Besides DK7FC, the
attached screenshot from last night may also have a weak trace on
136174.3 and perhaps another on 136172.8 Hz  (note that frequency
scales are offset by about 0.22 Hz due to residual LO error).

Depending on our travel group's schedules, I may be able to run a
couple more evening sessions in the days to come. Unfortunately we have
to walk to the next village for internet access, but I can hook up with
Stefan by mobile phone for announcements and immediate feedback. We
intend to go back to DL on Feb. 24th.

Best 73,

Markus (VU/DF6NM)


Details:

Location: MJ89GP, 9.65 N 76.53 E, in the village of
Sreekandamangalam, about 5 km north of Kottayam, Kerala, India, time
zone UT + 5:30,
antenna: Eprobe 40 cm wire in a palm-leave shed, simple
BF245C preamp,
receiver: FiFi-SDR (modified frontend, temperature
stabilized Si570), LO 135 kHz (0.22 Hz low),
computer: akoya netbook,
internal soundcard 11025 IQ /s, SpecLab FFT 21 mHz, 10s /pix.

Receive
sessions:

12-02-07 morning  0:09-01:28
noise blanker not enabled
0:20-
0:55: 136172.0+-0.075  DK7FC T...M

12-02-08 morning 0:49-02:00
noise
blanker not enabled
local carrier on 136172.1
nil DFCW

12-02-08
daytime 6:38-7:06
HGA about 12 dB SNR
QRM lines 136172.1, 136074.0

12-
02-08 evening 16:04-17:32:
noise blanker enabled
136171.8 +-0.075
DK7FC  "O" up to 20 dB SNR, HGA abt 58 dB SNR

12-02-13 evening 17:39-
19:12:
noise blanker enabled
17:39-19:12  136171.8 +-.075  DK7FC "O" 15-
20 dB SNR
17:45-18:03, 18:58-19:05 136174.3 unid "T" < 10 dB SNR
18:57-
18:59  136172.8 unid "T"