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Total 78 documents matching your query.

41. LF: Some signals (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 19 Feb 2001 11:47:28 -0300
Hi ... I think I got some signals when monitoring 135.920. I set up Argo to watch from 800Hz (135920) to 806Hz (135926), 60 second dot, slow. Unfortunately, it's summer here so static crashes are rea
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00204.html (8,742 bytes)

42. Re: LF: Re: GPS-Disciplined BPSK (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Wed, 14 Feb 2001 16:11:59 -0300
There is a problem which will limit us to MS100 or slower anyway. It's that we have considerable difficulty compensating for the number of *milliseconds* delay through our transmitters and our recei
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00293.html (9,011 bytes)

43. LF: Accuracy Limits (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 12 Feb 2001 15:20:47 -0300
I "borrowed" this from NIST site. Hope that's useful. 73 Marcus PY3CRX/PY2PLL S. B. do Campo - GG66rf http://py.qsl.br Active from "DC" to 24GHz GIF image
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00340.html (8,192 bytes)

44. Re: LF: GPS-Disciplined BPSK (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 12 Feb 2001 12:19:33 -0300
This would seem to need much less engineering than processing the output of a GPS. Stewart G3YSX I can detect 60KHz from WWVB, but useless to lock anything ... so ... I use a Furuno OEM module, that
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00346.html (11,234 bytes)

45. LF: Re: SWR X phase X reactive components (score: 1)
Author: [email protected]
Date: Thu, 08 Feb 2001 00:58:51 +0100
Hi Bob . . . You are venturing into the "operating impedance bridge" (OIB) idea. An article with some information is "Building an Operating Impedance Bridge" in QST, Nov 1979, pp 11-17. I think this
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00465.html (10,140 bytes)

46. LF: SWR X phase X reactive components (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Wed, 7 Feb 2001 11:49:43 -0200
I need a help: I have an SWR bridge - 2 X 1:40 transformers on a conventional circuit and from this bridge I have two rectified voltages: forward and reflected. On the other side, if I have any react
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00480.html (8,541 bytes)

47. LF: Re: PLL / Loop antennas (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 5 Feb 2001 15:54:51 -0200
<?color><?param 0100,0100,0100> Hi James et all ... James=> In the LF range, and loop inductances of the order of 10s of uH, 0.1 ohm will be significant. The copper octagon inductance I'm using to te
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00527.html (11,657 bytes)

48. LF: 1 turn loop X other antennas (score: 1)
Author: [email protected]
Date: Sun, 04 Feb 2001 18:54:22 +0100
Hi all ... I took some readings using 3 different antennas and there's the results: (1.2m "diameter") covered by 26# magnetic wire, varactor tuned and MPF102 push-pull preamp. I'm trying to verify if
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-02/msg00559.html (9,910 bytes)

49. LF: Re: CFA (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Tue, 15 May 2001 09:45:53 -0300
Hi ... Anyone with experience of CFA, who can point John into the right direction ? I got the mail direct, I assume than John is not subscribed, so please any responses with a CC to : I subscribed on
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-05/msg00165.html (10,158 bytes)

50. LF: Re: Spectrum Lab uploaded again (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Fri, 15 Jun 2001 13:01:15 -0300
Hi ... Very nice performance, using a P III 800, 312MB RAM, P133 Motherboard with built in sound card (SIS630). Able to receive: MSK: 16KHz(GBR)/18.3KHz(FR)/19.8KHz(AUS)/20.1KHz/20,9KHz and 21.4KHz M
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-06/msg00162.html (8,885 bytes)

51. LF: Re: Re: CFA (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Sat, 4 Aug 2001 13:57:30 -0300
I´ve been reading about CFA on Antennex since 1999 and the controversy still there. Most of the experimenters that published some design abandoned the projects. We can feel this because the CFA´s rel
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-08/msg00181.html (9,391 bytes)

52. LF: Re: WG Selective Level Meter (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Fri, 28 Sep 2001 03:45:22 -0300
Hi Geri ... I use the selective level meter MV62 very successfully for LF reception, I also have a Siemens unit (see http://www.qru.de/MV61.htm). There is also an article on the internet about the ge
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-09/msg00024.html (9,227 bytes)

53. Re: LF: CFH? Dumb Question (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Thu, 25 Oct 2001 13:36:33 -0200
Hi ... Thanks for all that answered. I saw a steady carrier with slow QSB all night long at 137.043. No rtty or may be it was just idle. VTX3, GBR, WWVB, NAA, NAM etc were strong too. The European/Af
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-10/msg00073.html (9,531 bytes)

54. LF: CFH? Dumb Question (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Wed, 24 Oct 2001 19:34:18 -0200
Hi ... What this carrier is? An amateur signal or an utility station? Is the freq exactly 137KHz? 73 Marcus, PY3CRX/PY2PLL GG66rf http://py.qsl.br Active from "DC" to 24GHz
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-10/msg00088.html (9,012 bytes)

55. Re: LF: Re: just a test from South America (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Thu, 18 Oct 2001 01:11:13 -0200
Hi Rafael ... My antennas are 2m loop and Marconi T with base load and variometer for use with TX. So please, try to catch two signals, the same modulation scheme (seems SITOR at a slower baudrate) a
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-10/msg00178.html (9,970 bytes)

56. LF: Re: just a test from South America (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 15 Oct 2001 15:07:17 -0200
Hi Rafael ... What kind of hardware are U using ? I'm getting back to under 500KHz listening in some days. May be we can share some odd signals listening. I still waiting for Anatel special authoriza
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-10/msg00204.html (9,031 bytes)

57. LF: Re: Re: 133.24 and 146.40 kHz (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 26 Nov 2001 19:07:45 -0200
Sorry for the BW ... wrong destination, should be addressed to Trond. 73 Marcus, PY3CRX/PY2PLL GG66rf http://py.qsl.br Active from "DC" to 24GHz
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-11/msg00073.html (8,675 bytes)

58. LF: Re: 133.24 and 146.40 kHz (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 26 Nov 2001 03:20:24 -0200
Hi Trond ... Besides 132.24 and 146.40 kHz signals, now I´m shure that there´s TWO DATATRAK signals on 146.4KHz. One is very strong here (now peaking 15dBuV) and the other is weak. Different timings
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-11/msg00080.html (8,741 bytes)

59. Re: LF: RTTY on 73.3 kHz? (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 26 Nov 2001 03:20:07 -0200
Detected here (23°S/46°W) at 05:20UTC ... 73 Marcus, PY3CRX/PY2PLL GG66rf http://py.qsl.br Active from "DC" to 24GHz
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-11/msg00081.html (9,672 bytes)

60. Re: LF: RTTY on 73.3 kHz? (score: 1)
Author: "PY3CRX PY2PLL" <[email protected]>
Date: Mon, 26 Nov 2001 13:19:01 -0200
Hi ... The same FSK, 100Hz shift, was received at 23°S/46°W at 4:30 UTC aprox, centered at 73.25KHz. Sometimes audible, but most of the time only detected on Spectran. Other signals: DCF77 (77.5K) de
/rsgb_lf_group-archives/html/rsgb_lf_group/2001-11/msg00090.html (8,706 bytes)


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