Return to KLUBNL.PL main page

Search String: Display: Description: Sort:

Results:

References: [ +from:: 611 ]

Total 611 documents matching your query.

341. Re: LF: RE: PA matching oddity (score: 1)
Author: "Clemens Paul" <>
Date: Wed, 17 Feb 2010 14:16:19 +0100
Oh yes,be careful about this precious piece of measuring equipment. But then,with < +/- 0,2dB you come out at an uncertainty within of around +/- 42W at 900W. 73 Clemens DL4RAJ -- Original Message --
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-02/msg00406.html (28,505 bytes)

342. LF: Re 8.97 kHz (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 14 Mar 2010 19:46:36 +0100
Hi Uwe, I could'nt find any info about your audigy regarding input Z, but soundcards use to have an input Z of several kOhm,e.g. a Delta 44 has 10k. http://www.nitehawk.com/sm5bsz/linuxdsp/hware/opti
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-03/msg00166.html (8,833 bytes)

343. Re: LF: Re: 9kHz noise level (score: 1)
Author: "Clemens Paul" <>
Date: Tue, 2 Mar 2010 22:39:58 +0100
Hi Roelof, and at 8.970 kHz it is 7.7 dB. That's pretty close to IK1ODO's meaurements some time ago, he measured -7,9dB at 10kHz. 73 Clemens DL4RAJ Hello Paul, Thank you very much indeed for the desc
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-03/msg00506.html (12,800 bytes)

344. LF: Re: Balun for tuned loop antenna (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 28 Mar 2010 21:10:09 +0200
Hi Daniele, according to your description your magnetic loop has an inductively coupled secondary coil, the pickup coil as you call it, which presumably performs a step-down transformation of around
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-03/msg00519.html (13,342 bytes)

345. Re: LF: DI2AK JN48qq, QRS3 now 505,1 kHz (score: 1)
Author: "Clemens Paul" <>
Date: Mon, 29 Mar 2010 00:01:14 +0200
Hello Hans-A. solid aural copy with up to S7 on an untuned 88m wire. A bit stronger than DI2AM around 70Hz up. 73 Clemens DL4RAJ Loc:Südostbayern,12,90006°O/48,4150°N (Gridloc:JN68KJ) -- Original Mes
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-03/msg00577.html (14,034 bytes)

346. Re: LF: VLF TX experiments_short report (score: 1)
Author: "Clemens Paul" <>
Date: Tue, 2 Mar 2010 22:58:05 +0100
Hi Stefan, ...But thus the internal C is high, so stray currents occur that increase the resistive losses. Additionally the >proximity effect plays its role... Do you mean circulating currents by 'st
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-03/msg00591.html (15,970 bytes)

347. LF: Re: 4th VLF experiment by DK7FC/p (score: 1)
Author: "Clemens Paul" <>
Date: Fri, 2 Apr 2010 09:14:57 +0200
Hi Stefan, this time I'm at home and will be watching out for your signal. RX is a Perseus,antenna is my 2x46m dipole with 42m open feeder. The latter is running 8m vertical out of the shack,the rest
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-04/msg00109.html (14,420 bytes)

348. LF: Re: LD30 (score: 1)
Author: "Clemens Paul" <>
Date: Wed, 12 May 2010 16:31:37 +0200
Hi Mal, you might buy the service manual ("Serviceunterlage") for Euro 15,60 from http://www.rainer-foertig.de/unterlagen/WG-3_2009.htm I'm not sure if the schematics ("Schaltbilder") are included be
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-05/msg00132.html (10,700 bytes)

349. Re: LF: ALPHA (score: 1)
Author: "Clemens Paul" <>
Date: Mon, 31 May 2010 20:09:36 +0200
Is it still on this evening Just now,18.00 UTC, no alphas there. Usually they are quite good audible (and even more visible) here with E1800,Perseus and even with a Sony CRF-1 on a long wire and prob
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-05/msg00338.html (9,411 bytes)

350. Re: LF: Re: Re: VLF 9 kcs: preamp and antenna noise (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 6 Jun 2010 16:20:09 +0200
At 10 kHz the attenuation is 8 dB, so the stated noise figure of 27 dB at 9 kHz complies with this. Exactly. And the qst-quoted MDS of -127dBm @ 2.4kHz (surley somewhere >1MHz ) which means af NF of
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00040.html (12,716 bytes)

351. LF: VLF-Noise (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 3 Jun 2010 17:05:43 +0200
Looking on the VLF spectrum I notice that noise at 4kHz or lower is abt 30dB less than around 10kHz or higher (see screenshot). So wouldn't it make sense to trx around 4kHz? Wouldn't the 30dB noise a
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00060.html (11,050 bytes)

352. LF: Re: Re: VLF 9 kcs: preamp and antenna noise (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 6 Jun 2010 17:33:33 +0200
Markus,Jim, the point of Jim was (i believe) to take a dummy with approximately the same impedance of the antenna (at the rx input) to have a more exact reference for comparison of rx or preamp noise
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00285.html (19,179 bytes)

353. LF: Re: Re: Alpha back (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 3 Jun 2010 23:54:32 +0200
Now,at 22.53z, alphas stronger than in the afternoon. See screenshot. 73 Clemens DL4RAJ -- Original Message -- From: Clemens Paul To:
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00286.html (12,560 bytes)

354. LF: Re: Alpha back (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 3 Jun 2010 12:58:58 +0200
Dito here at 11.00utc. Audible and visible. 73 Clemens DL4RAJ -- Original Message -- From: mal hamilton To: rsgb Sent: Thursday, June 03, 2010 10:10
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00577.html (10,183 bytes)

355. LF: Re: Re: 9 kcs (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 6 Jun 2010 08:48:55 +0200
Jim, Since the RX or preamp noise level can be strongly dependent on the source impedance, I can not confirm this with my RX,a Perseus SDR. When I switch on 9kHz or any other qrg between 50 Ohm, open
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00607.html (13,006 bytes)

356. Re: VLF: RX stations in Canada and US? (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 6 Jun 2010 23:01:16 +0200
Hi Joe, from what I can find in the web it tunes down to (only) 15kHz. That's probably because below 15kHz synthesizer sideband noise would be an issue. My Sony CRF-1 tunes down to zero Hertz but you
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00658.html (15,015 bytes)

357. Re: LF: VLF-Noise (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 3 Jun 2010 18:36:56 +0200
Hi Daniele and Rik, thanks for your replies. The low noise below 4kHz is even more impressive to watch live on Perseus when static crashes periodically shoot the noise baseline quickly upwards. The b
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00692.html (12,109 bytes)

358. LF: Re: move from loop to loaded aerial (score: 1)
Author: "Clemens Paul" <>
Date: Fri, 11 Jun 2010 19:32:23 +0200
Hi Wolfgang, A radiator with a relatively small active length should more or less have a spherical pattern. It is a quite common misbelief that a small antenna (with one active element) has a spheric
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-06/msg00759.html (13,597 bytes)

359. LF: Re: Re: SAQrx soundcard VLF receiver moved to new web site (score: 1)
Author: "Clemens Paul" <>
Date: Tue, 13 Jul 2010 13:42:25 +0200
Uwe, you can "build" it very easily following Johan's instructions on his web page. :-) ,copied below: -- Download saqrx06.zip (below) and unzip the file in a folder of your choice. There is only one
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00005.html (12,216 bytes)

360. LF: Re: SAQ (score: 1)
Author: "Clemens Paul" <>
Date: Mon, 5 Jul 2010 00:22:33 +0200
Hi Roelof, thank you for sharing your SAQ reception with us. It's a very good benchmark for comparisons and Perseus is a great tool to make such file sharing possible. My Miniwhip is only 30cm above
/rsgb_lf_group-archives/html/rsgb_lf_group/2010-07/msg00045.html (14,036 bytes)


This search system is powered by Namazu