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Total 611 documents matching your query.

201. LF: RE: F4DTL QRSS3 MF beacon this evening (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 23 Nov 2017 21:37:07 +0100
Hello Nicolas, I copy your signal aural and visual easily with 559 , 20Hz above IQ2MI. 73 Clemens DL4RAJ Ant.2x155m Dipol; RX Perseus http://k7fry.com/grid/?qth=JN68KJ79WJ =link&utm_campaign=sig-emai
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00192.html (10,593 bytes)

202. RE: LF: Strange signal on MW (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 23 Nov 2017 22:20:26 +0100
Hello Markus, bingo,thanks for the hint. Now I can read it on my persues,too,after having set the appropriate waterfall parameters, which is a bit tricky. Unfortunately the hell signal is in the wspr
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00198.html (13,712 bytes)

203. RE: LF: Strange signal on MW (score: 1)
Author: "Clemens Paul" <>
Date: Sat, 25 Nov 2017 16:19:38 +0100
Hi Markus, I agree.Probably it was just too late for me after a loong working day ... :-) 73 Clemens DL4RAJ Grabber.html =link&utm_campaign=sig-email&utm_content=emailclient> Virenfrei. =link&utm_cam
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00218.html (13,580 bytes)

204. LF: RE: DK7FC close to SAQ (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 26 Nov 2017 12:12:44 +0100
Hi Stefan, erlizenz.jpg Is this license for ultrasonic emissions? :-) Under "Verwendugnszweck" I read "...Längswellen..." which would mean longitudinal waves,aka sound waves. 73 Clemens DL4RAJ
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-11/msg00234.html (9,584 bytes)

205. LF: RE: Icom IC-706 Tx on 477kHz (score: 1)
Author: "Clemens Paul" <>
Date: Wed, 13 Dec 2017 17:49:00 +0100
Hi Gary, I see no reason why you should not trust Wolf's description on http://www.qsl.net/dl4yhf/mf/mf.html#IC706_on_MF which I pointed you to in Jan/2017. What would you consider as "real confirmat
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00196.html (9,834 bytes)

206. RE: [rsgb_lf_group] Re: LF: RE: Icom IC-706 Tx on 477kHz (score: 1)
Author: "Clemens Paul" <>
Date: Wed, 13 Dec 2017 23:07:21 +0100
Hi Gary, This mod seems to be wrong. When dealing with mods I usually read different descriptions because they are not always correct. This helped a lot me when I opened the TX of my 7800. D60 exists
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00203.html (17,671 bytes)

207. RE: [rsgb_lf_group] Re: LF: RE: Icom IC-706 Tx on 477kHz (score: 1)
Author: "Clemens Paul" <>
Date: Tue, 19 Dec 2017 14:32:26 +0100
Hi Gary, glad to hear that the mod has been accomplished successfully at last. 73 Clemens DL4RAJ 90063108/msgId=7342/stime=1513456965> =X3oDMTJmOWxiZWU4BF9TAzk3NDkwNTA1BGdycElkAzg1MDgwODk1B>GdycHNwSW
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00254.html (19,460 bytes)

208. RE: R: Re: LF: TXing 2200m WSPR (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 28 Dec 2017 14:00:34 +0100
Hi Paul, Out of curiosity I've done some spice simulations of your PA. They indicate that a T type LPF won't help at all. This was to be expected because your PA is not a class D voltage mode push pu
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00422.html (12,822 bytes)

209. RE: R: Re: LF: TXing 2200m WSPR (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 28 Dec 2017 22:33:42 +0100
Hi Paul, No! It helps reducing harmonics output of the PA which in case are reflected by the LPF to the FET and MAY cause instability and IMD. That's why *sometimes* diplexer filters are used. They s
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00442.html (16,349 bytes)

210. RE: R: Re: LF: TXing 2200m WSPR (score: 1)
Author: "Clemens Paul" <>
Date: Thu, 28 Dec 2017 22:38:39 +0100
Hi Paul, See also my other mail. Shielding and common mode choke. 73 Clemens DL4RAJ
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00443.html (16,829 bytes)

211. RE: R: Re: LF: TXing 2200m WSPR (score: 1)
Author: "Clemens Paul" <>
Date: Fri, 29 Dec 2017 13:08:27 +0100
Hi Paul, Basically yes. But we don't know how much capacitively coupling there is between primary and secondary which might partially spoil the RF isolation. I would just give it a try: One chocke at
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00460.html (13,800 bytes)

212. RE: R: Re: LF: TXing 2200m WSPR (score: 1)
Author: "Clemens Paul" <>
Date: Fri, 29 Dec 2017 14:44:21 +0100
Hi Paul, 22 turns on one FT114-J core is more than adequate. It gives you an XL of - j1.291k which in turn means an attenuation of around 22dB (referenced to 50 Ohms) for common mode currents. So shi
/rsgb_lf_group-archives/html/rsgb_lf_group/2017-12/msg00466.html (17,306 bytes)

213. LF: RE: Si5351A syntehsiser able to fire a FET driver chip directly?? (score: 1)
Author: "Clemens Paul" <>
Date: Mon, 1 Jan 2018 12:04:58 +0100
Hi Chris, How about a 1:4 transformer? 73 Clemens DL4RAJ
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-01/msg00002.html (9,943 bytes)

214. LF: RE: RE: Si5351A syntehsiser able to fire a FET driver chip directly?? (score: 1)
Author: "Clemens Paul" <>
Date: Mon, 1 Jan 2018 12:10:44 +0100
73 Clemens DL4RAJ
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-01/msg00003.html (10,996 bytes)

215. RE: LF: RE: RE: Si5351A syntehsiser able to fire a FET driver chip directly?? (score: 1)
Author: "Clemens Paul" <>
Date: Mon, 1 Jan 2018 13:07:41 +0100
A turns ratio of 4:16 gives a 1:4 voltage ratio so this ratio would require only one core. One could make one 1:4 (V) transformer or two cascaded 1:2 (V) ones, the latter probably being more feasibl
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-01/msg00006.html (11,777 bytes)

216. LF: RE: wsprnet (score: 1)
Author: "Clemens Paul" <>
Date: Tue, 2 Jan 2018 11:49:51 +0100
Yes. :-( 73 Clemens DL4RAJ
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-01/msg00025.html (8,778 bytes)

217. LF: RE: DK8ND cqing 472k on 13.01.2018 (score: 1)
Author: "Clemens Paul" <>
Date: Sat, 13 Jan 2018 22:02:26 +0100
Hallo Albrecht, you are peaking S8 here. Your qrg is drifting between around 47.2 and 472.3kHz. Ant.2x155m Dipol; RX Perseus http://k7fry.com/grid/?qth=JN68KJ79WJ 73 Clemens DL4RAJ =link&utm_campaign
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-01/msg00188.html (10,285 bytes)

218. RE: LF: DF6NM is the inventor of the year ! (score: 1)
Author: "Clemens Paul" <>
Date: Sun, 28 Jan 2018 10:51:42 +0100
Hats off!! It's an honour to have such a brilliant mind on our list. 73 Clemens DL4RAJ
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-01/msg00394.html (9,509 bytes)

219. RE: LF: VLF Small magnetic antenna for Tx (score: 1)
Author: "Clemens Paul" <>
Date: Sat, 3 Feb 2018 11:24:29 +0100
Hi Jim, I've found a graph showing Z_Wave over D/. Near the loop: Z_wave = 377*(2pi*D) / lambda 73 Clemens DL4RAJ Attachment: Wave Impedance.png Description: PNG image
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-02/msg00013.html (10,043 bytes)

220. RE: LF: VLF Small magnetic antenna for Tx (score: 1)
Author: "Clemens Paul" <>
Date: Sat, 3 Feb 2018 12:26:03 +0100
Hi Jim, Here is another informative figure. probe) How did you calculate the 45 dB disadvantage for the E-filed probe? 73 Clemens DL4RAJ Attachment: E_H Loop.png Description: PNG image
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-02/msg00015.html (10,072 bytes)


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