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61. Re: LF: Re: Mini-Whip Antenna (score: 1)
Author: pws <[email protected]>
Date: Tue, 18 Jan 2011 18:26:06 +0100
Hi Roelof et al., Thanks for all those comments about ideas, alternative parts, and sources! Ordered! @Mal, g3kev: indeed I'm thinking about ICs like AD797 or LT1028 at the 2nd stage for low frequenc
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-01/msg00877.html (11,294 bytes)

62. Re: LF: HGA22 plot (score: 1)
Author: pws <[email protected]>
Date: Sat, 19 Feb 2011 16:55:45 +0100
Hi Dex, I have no raw data from today now but here's a plot of 135.43 kHz, from 2011-02-18, ~2330-0000 utc: http://www.df3lp.de/hga22/2011-02-18_2330.png Distance is 1008 km, bearing 138 deg., select
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-02/msg00840.html (9,986 bytes)

63. LF: Re: Russian Alphas (score: 1)
Author: pws <[email protected]>
Date: Sat, 26 Mar 2011 16:16:06 +0100
Hi, The "Alpha"-chain was off air from 2011-03-21, 21:00 to 2011-03-24, 20:45 utc. Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-03/msg00439.html (8,743 bytes)

64. Re: LF: OSC (score: 1)
Author: pws <[email protected]>
Date: Wed, 16 Mar 2011 18:17:50 +0100
Hi Mal, It's a voltage controlled TCXO (TCVCXO). Data sheet is available on the net, "google" for "MC137X7". Should be somewhat more stable compared to ordinary CO. Greetings, Peter
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-03/msg00738.html (8,369 bytes)

65. Re: LF: Volcano eruption on my VLF-grabber (score: 1)
Author: pws <[email protected]>
Date: Sun, 22 May 2011 08:04:32 +0200
Hi Halldor, may be an observation of importance beyond hamradio stuff? URL? UTC? Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-05/msg00415.html (9,212 bytes)

66. LF: Loran-C/Sylt off (score: 1)
Author: pws <[email protected]>
Date: Tue, 24 May 2011 17:25:58 +0200
Hi, Loran-C at Rantum/Sylt is off since 0600 utc, 2011-05-24. Greetings from Kiel, Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-05/msg00598.html (7,715 bytes)

67. Re: LF: JJY 60 KHz en Argentina (score: 1)
Author: pws <[email protected]>
Date: Wed, 08 Jun 2011 19:06:20 +0200
Hi Alex, Impressive audible! But how did you ruled out receiving MSF or WWVB both running at 60 kHz too? May be from the Morse code sent in between? 73 de Peter, df3lp Kiel, North Germany
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-06/msg00113.html (9,737 bytes)

68. Re: LF: 16.3 kHz (score: 1)
Author: pws <[email protected]>
Date: Sun, 26 Jun 2011 17:12:31 +0200
Hi Stefan, Allocated to VTX1, India. http://maps.google.com/maps?ll=8.3845691,77.754468&z=14 Gruesse aus Kiel, Peter
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-06/msg00133.html (8,800 bytes)

69. Re: LF: SPAM (score: 1)
Author: pws <[email protected]>
Date: Wed, 15 Jun 2011 20:12:10 +0200
Hi Mal, Fully compensated by the waffling score of other guys. [^_^] Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-06/msg00215.html (9,413 bytes)

70. LF: Re: LF RX loop (score: 1)
Author: pws <[email protected]>
Date: Fri, 17 Jun 2011 15:47:23 +0200
Hi Stefan, Confirming your findings. In the late 90th I built a 2m-loop from 1" coax ("Flexwell") for nulling out Loran-C splatter. I remember a bandwidth of ~12-15 kHz => Q ~= 10 with 8.2uH/165nF. h
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-06/msg00382.html (10,792 bytes)

71. LF: SAQ ? (score: 1)
Author: pws <[email protected]>
Date: Tue, 12 Jul 2011 21:20:18 +0200
Hi Group, May be SAQ was active this afternoon (2011-07-12)? Observed distinct signals around 1630 & 1730 utc at 17.2 kHz. Also visible on the monitors in Heidelberg and at Iceland. Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-07/msg00068.html (9,548 bytes)

72. Re: LF: Circuit Analysis Programs (score: 1)
Author: pws <[email protected]>
Date: Thu, 07 Jul 2011 08:09:11 +0200
Hi John, If you are looking for open source software: http://qucs.sourceforge.net/ Compiles on Linux, BSD, MacOS and Cygwin. Learning is quite easy using the examples: http://qucs.sourceforge.net/exa
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-07/msg00179.html (9,298 bytes)

73. LF: Re: SAQ (score: 1)
Author: pws <[email protected]>
Date: Sun, 03 Jul 2011 20:28:33 +0200
Hi Group, Local interferences were less strong here at 2. transmission. http://www.df3lp.de/misc/SAQ_2011-07-03-1200.wav As usual there was some kind of instability audible and a lot of carrier in be
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-07/msg00180.html (9,964 bytes)

74. LF: Re SAQ (score: 1)
Author: pws <[email protected]>
Date: Sun, 03 Jul 2011 12:49:37 +0200
Hi Group, Very strong at the Baltic Sea (sic!) http://www.df3lp.de/misc/SAQ_2011-07-03.png Antenna: http://www.df3lp.de/misc/E-Field-Probe_2011-03.jpg (mounted at roof-edge) Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-07/msg00184.html (9,400 bytes)

75. Re: LF: fERRITE JOY STICK (score: 1)
Author: pws <[email protected]>
Date: Fri, 19 Aug 2011 19:25:39 +0200
Hi Mal, Bundling is not worth the effort. In case of ferrite loop sticks length is what matters. This is just a fun experiment for me because I do not need any Mephistopheles: "My good sir, you obser
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00085.html (9,119 bytes)

76. Re: LF: Re: Ferrite wideband antennas? (score: 1)
Author: pws <[email protected]>
Date: Tue, 30 Aug 2011 16:20:02 +0200
Hi Daniele, You wrote: ... Yesterday evening a purchased a bunch of 7 x MU400HH ferrites (10mm x 200mm each) on eBay, planning to join them together "in parallel" to form a fatter rod, no idea if it
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00152.html (14,241 bytes)

77. LF: Re: Ferrite Receive Antennas (score: 1)
Author: pws <[email protected]>
Date: Fri, 19 Aug 2011 20:35:25 +0200
Hi, O.K., once again. Seems like to post into /dev/null... Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00231.html (10,816 bytes)

78. LF: Re: Ferrite wideband antennas? (score: 1)
Author: pws <[email protected]>
Date: Tue, 30 Aug 2011 17:17:03 +0200
Hi again Daniele, I forgot some words about shielding. Do not use solid sheet. I just built a small receiver for rtty at 147 kHz for weather report reception when sailing. Using a fine looking u-shap
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00318.html (12,695 bytes)

79. Re: LF: Ferrite RX antennas (score: 1)
Author: pws <[email protected]>
Date: Mon, 15 Aug 2011 17:37:20 +0200
Hi Marcelino, Be welcome! Fine pieces, but: "Sales to USA only" =:( (I never understood why...) Peter, df3lp
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00602.html (10,709 bytes)

80. Re: VLF: GQD TX off (score: 1)
Author: pws <[email protected]>
Date: Wed, 24 Aug 2011 16:58:12 +0200
Moin Stefan, You wrote: ... I'm using a cheap GPS module (http://cgi.ebay.de/Jupiter-Rockwell-TU30-D420-031-GPS-Empfanger-/180713452906?pt=DE_GPS_Navigationssysteme&hash=item2a135c756a) which has a 1
/rsgb_lf_group-archives/html/rsgb_lf_group/2011-08/msg00673.html (9,686 bytes)

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