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1. Re: VLF: 8270 March 26/27 (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 27 Mar 2016 10:50:19 +0200
Hallo VLFler, Das Osterei dürfte vom vor mir sein. Seit gestern sende ich auf dieser Frequenz einen Dauerträger. Werde es heute noch durchlaufen lassen und danach mein Rufzeichen in QRSS 600 senden.
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-03/msg00338.html (13,127 bytes)

2. Re: VLF: 8270 March 26/27 (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 27 Mar 2016 15:23:33 +0200
Hallo Markus, ja, ich hatte mal eine 2-Wegverbindung mit Walter. Werde Walter mal anrufen, damit er weiß was aus seinem Verstärker geworden ist. Ich arbeite zur Zeit mit: - Rubidium Oszillator mit Bi
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-03/msg00342.html (20,535 bytes)

3. Re: VLF: 8270 March 26/27 (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 27 Mar 2016 22:52:00 +0200
Paul, thank you very much for your report. I'm glad to read this. But I have to do some more tests to make it more sure. I hope, that you will receive me some more. Yes I need some more current to th
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-03/msg00351.html (12,295 bytes)

4. Re: VLF: 8270 March 26/27 (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 28 Mar 2016 20:38:02 +0200
Hello Paul, danke, ich freue mir über diese Verbindung und gratuliere dir zu deiner Leistung. Denn der Nachweis konnte nur durch deine sehr guten Empfangsanlage nachgewiesen werden. Dieser Erfolg war
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-03/msg00361.html (12,509 bytes)

5. Re: VLF: DL3NDR at 8270.0010 Hz? (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Wed, 30 Mar 2016 23:50:12 +0200
Hello Stefan, I assume that's me. There ar about 370Veff on the coil. If I increase the voltage I will get problems. The best would be if I improve the antenna. The antenna is now horizontal 50m and
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-03/msg00380.html (9,430 bytes)

6. Re: LF: TXing on VLF again, Iron powder cores... broomstick coil? (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 17 Apr 2016 23:26:25 +0200
Hallo Markus, Habe die Antenne ohne den 3. Draht umgebaut. Erreiche knapp 0.3Aeff bei 310 Veff. Das ist der doppelte Strom wie ursprünglich. Es sieht alles wie erwartet aus. Ich komme aber bei dir ni
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00239.html (10,374 bytes)

7. Re: LF: TXing on VLF again, my first homemade linear PA! :-) (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 24 Apr 2016 18:56:54 +0200
Hello, I'm on 8270Hz with 0.3A as test transmission.  I hope our signal separation is good enough. Roland Dl3NDR Am 23.04.2016 um 18:51 schrieb DK7FC: Hi all, Since about 16 UTC i'm transmitting on 8
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00284.html (14,551 bytes)

8. Re: VLF: EbNaut transmission on 8270.1 Hz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 24 Apr 2016 22:44:36 +0200
Hello Stefan, sorry, I didn't realize that you are transmitting 'EbNaut', what ever this mean, at least a frequency shift modulation 'BPSK'. And therefore is a distance of 5mSek to less. I hope, that
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00294.html (12,765 bytes)

9. Re: VLF: EbNaut transmission on 8270.005 Hz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Sun, 24 Apr 2016 23:24:47 +0200
Paul, thank you for the report. I'm happy with 0.09 fT. Tomorrow morning I will do an another try. best 73 Roland Dl3NDR Am 24.04.2016 um 22:53 schrieb Paul Nicholson: Well done Stefan!  The first of
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00299.html (11,620 bytes)

10. Re: VLF: EbNaut transmission on 8270.005 Hz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 25 Apr 2016 08:56:25 +0200
Hello Paul, Markus, Stefan, I started my transmission and will let it run for 3 to 4 hours. 73 Roland DL3NDR Am 24.04.2016 um 23:54 schrieb Paul Nicholson: No more significant signal from Roland afte
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00303.html (11,335 bytes)

11. Re: VLF: EbNaut transmission on 8270.005 Hz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 25 Apr 2016 13:50:07 +0200
Paul, it started quit well. But after a while, I had problems. If I is running stable, than I will inform you. 73 Roland Am 25.04.2016 um 12:58 schrieb Paul Nicholson:
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00309.html (11,131 bytes)

12. Re: VLF: EbNaut transmission on 8270.1 Hz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 25 Apr 2016 20:04:06 +0200
Hi Paul,  Stefan I hope i have solved the problem. The antenna current with 332mA was to much. The Amplifier switched off. Now I am using 240mA. and try again. Transmission was running the last 2 hou
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00317.html (13,832 bytes)

13. Re: VLF: EbNaut transmission on 8270.1 Hz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 25 Apr 2016 20:17:10 +0200
Paul, sorry. Even with 240mA the transistors went to hot, about 120°-130°. I finish. Perhaps you can look for the last 2 0r 3 hours. A nice evening. Roland Am 25.04.2016 um 20:04 schrieb Roland Brues
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-04/msg00318.html (15,197 bytes)

14. Re: VLF: EbNaut transmissions on lower frequencies?, pre-tests: 6.47kHz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Fri, 13 May 2016 09:36:54 +0200
Hello Markus, Stefan, Paul, I'm back at 8170kHz and using now a class D Amplifier. You can see me at Markus Grabber. Amplifier : max. power on 2 Ohm: 500W mac. power on 4 Ohm: 250W Power supply range
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00089.html (13,771 bytes)

15. LF: DL3NDR back on 8270kHz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Fri, 13 May 2016 09:53:28 +0200
Hi, sorry a correction: it is not IC: Texas DTA8950 it is Texas TAS5630 Roland Am 13.05.2016 um 09:36 schrieb Roland Bruestle: Hello Markus, Stefan, Paul, I'm back at 8170kHz and using now a class D
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00090.html (13,915 bytes)

16. Re: VLF: 8.27 (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Fri, 13 May 2016 18:48:53 +0200
Hello Stefan, ok, it should be 8270kHz. I have now decreased the turns on the primary winding. The antenna current is now 350mA, input power to the PA is 150W. Cooler temperature remains still 37°C.
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00094.html (14,515 bytes)

17. Re: VLF: 8.27 (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Fri, 13 May 2016 20:02:02 +0200
Hi Stefan, please, see below. 73 Roland Am 13.05.2016 um 19:08 schrieb DK7FC: Hi Roland, Am 13.05.2016 18:48, schrieb Roland Bruestle: Hello Stefan, ok, it should be 8270Hz. I assume you mean 8270 Hz
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00097.html (17,906 bytes)

18. VLF: EbNaut transmission, first try: 8,27kHz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 16 May 2016 23:28:48 +0200
Hi, my first EBNaut transmission on 8270Hz. Strart time 14.05.2016  21: 25 f:                        8270Hz Symbol length:     100s Characters:          2 CRC 16 8K191 73 Roland
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00144.html (14,098 bytes)

19. LF: Re: EbNaut transmission, first try: 8,27kHz (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Tue, 17 May 2016 07:11:41 +0200
Guten Morgen Markus, sorry Markus, I start again. The frequency synchronization was not switched on. new Start time:    17.05.2015  5.30 UTC f:                        8270Hz Symbol length:     100s C
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00146.html (15,635 bytes)

20. Re: VLF: Trying 6.47 kHz again, VLF.it (score: 1)
Author: Roland Bruestle <[email protected]>
Date: Mon, 23 May 2016 00:24:01 +0200
Am 23.05.2016 um 00:21 schrieb Roland Bruestle: Hallo Markus, ich habe bis ca. 21 UTC ein auf 6470Hz aufgenommen. Am Anfang habe ich Schrittweise die FFT-Bin-Weite reduziert. Unten sind das SpecLab-A
/rsgb_lf_group-archives/html/rsgb_lf_group/2016-05/msg00193.html (12,175 bytes)

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