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41. LF: DK 8 ND qrv 137k73 a1a, qsu (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Tue, 28 Dec 2010 19:23:17 +0100 (CET); Dear Lowfers, I start calling cq 137,73 kHz, A1A abt qrss3. 55, Hans-Albrecht JN48qq , nr. Stuttgart Neu: WEB.DE De-Mail - Einfach wie E-Mail, sicher wie ein Brief! Jetzt De-Mail-Adresse reservieren:; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-12/msg00843.html (9,968 bytes)
42. LF: DK 8 ND qrv 136k74 a1a qrss5 qsu (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Fri, 31 Dec 2010 22:30:58 +0100 (CET); Dear Lowfers, starting transmission now in qrss2...qrss7 a1a at 137,74 kHz. 55, Hans-Albrecht NEU: FreePhone - kostenlos mobil telefonieren und surfen! Jetzt informieren: http://produkte.web.de/go/we; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-12/msg01001.html (8,896 bytes)
43. Re: LF: DK7FC 137 kHz kite activity, qrv 15.20z (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sat, 8 Jan 2011 16:20:59 +0100 (CET); Dear lowfers, herad dk7fc/p A1A 136k80 15.20 UTC. Von: "Stefan Schäfer" <[email protected]> Gesendet: 08.01.2011 11:28:41 An: [email protected] Betreff: Re: LF: DK7FC 137; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-01/msg00629.html (15,110 bytes)
44. Re: LF: toroid xformer (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sun, 20 Feb 2011 20:22:46 +0100 (CET); Dear Mal, do not expect anything from laminated sheet iron cores. Usable frequencxys depends on the thicknes of the Iron sheets, and the conductivity ot the material. Therefore the iron is alloyed wi; /rsgb_lf_group-archives/html/rsgb_lf_group/2011-02/msg00565.html (11,672 bytes)
45. LF: dk6fc de dk8nd (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Wed, 4 Jul 2012 23:21:56 +0200 (CEST); Lieber Stefan, hörte Deinen Kurz-cq-Ruf. 04. Juli 2012 21.05z dk7fc 472k5 A1A rst339 55, Hans-Albrecht DK 8 ND JN48 QQ Ihr WEB.DE Postfach immer dabei: die kostenlose WEB.DE Mail App für iP; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-07/msg00176.html (9,972 bytes)
46. LF: dk8nd qrv 472k (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Tue, 3 Jul 2012 14:43:36 +0200 (CEST); Dear OMs, now I am qrv on 472k...479 kHz. Pout abt 50 W, TX Juma TX500, QSK no, LOC JN48QQ, near Stuttgart. Is there any draft for a bandplan, cq-freq. or the like? With an IF-Filter of 100 Hz I will; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-07/msg00243.html (11,773 bytes)
47. Aw: LF: Saturday night... (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sun, 8 Jul 2012 22:35:53 +0200 (CEST); Lieber Stefan, qrv schon, aber am Samstag abend lief im DLF die Sendung über Seefunk und cw. Ansosten höre ich Dich mit 449, Du mich nicht, oder fast nicht. Hier 50W_60 Ohm an 20 m vert mar; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-07/msg00263.html (11,579 bytes)
48. Aw: Re: LF: RE: Analog oscillators (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Thu, 5 Jul 2012 22:16:51 +0200 (CEST); Dear Stefan, building stable oscillators was a topic in the eighties, and it depeded all on getting stable components. Later developing OMs reported, that the oscillator for the qrp-TRX was the most; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-07/msg00293.html (13,608 bytes)
49. LF: beacon on 473,03 "bia" who is it, more NDB (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Thu, 29 Nov 2012 21:57:02 +0100 (CET); Dear OMs, tnx for the quick answers.I Have searched the band for similar sigs. Look here qrg/kHz Modulation (n0 carrier), dots and dashes show sigs 466,99 ftz ___ ___ 468,02 n0 469,06 ftz ___ ___ 473; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00330.html (11,527 bytes)
50. LF: beacon on 473,03 "bia" who is it (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Wed, 28 Nov 2012 22:06:51 +0100 (CET); Dear OMs, on 437,03 kHz I heard a sig keying bia in cw abt 60 ch/min on 28.11.2012 at 2105z. Who is it? 55, Hans-Albrecht DK 8 ND JN48QQ; /rsgb_lf_group-archives/html/rsgb_lf_group/2012-11/msg00926.html (8,870 bytes)
51. Aw: AW: LF: Variometer es Loading coils, from DK 8 ND (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sun, 13 Jan 2013 20:36:18 +0100 (CET); Betreff: AW: LF: Variometer es Loading coils Hi Stefan, LF I´ve just fixed my antennaswitch today. It´s a ceramic switch 4” diameter, fit well into on of these gray HT-Tube. But it; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-01/msg00129.html (16,456 bytes)
52. LF: HB 9 DFQ de DK 8 ND qsl (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Fri, 15 Feb 2013 21:01:42 +0100 (CET); Lieber Paul, danke für s QSO an der Rauschgrenze des Empfängers und meiner Ohren. 19.41 Z HB9 9 DFQ RST329. TX: Juma TX500, abt 50 W/50R RX: EKD300 (FW Köpenick, DDR) Ant: Vert Marconi; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-02/msg00045.html (8,818 bytes)
53. LF: TR-Switch for new TX (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Tue, 30 Dec 2003 19:17:57 +0100; Dear Lowfers, just I am designing a TR-switch for my new TX. Estimated Power about 60dbm/60 Ohm. The current situation with my TX 70W/60 Ohm: The RX-Path is swiched via two reed-Relays (homemade coax; /rsgb_lf_group-archives/html/rsgb_lf_group/2003-12/msg00104.html (9,235 bytes)
54. Re: LF: 300W-TX-G0MRF (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sun, 11 Jan 2004 13:21:42 +0100; Dear Peter, I have had similar problems in constructing PAs. First: One reason for the ringing might be the transistors. Put a capacitor 2n7/ 3kV ceramic from drain to source at each PA-transistor. T; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00190.html (10,384 bytes)
55. LF: Re:3C90 Al value? (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sun, 11 Jan 2004 13:07:20 +0100; Dear Dave, dont calculate the AL-value, try to get out the relative permeability of the material. Your formula: L=n2*AL my formula: L=u*u°*n2*Afe/lfe lfe is the length of the magnetic path. Permeabil; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00191.html (10,111 bytes)
56. Re: LF: G0MIN or good things come to those who wait, congrats! (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sun, 22 Feb 2004 18:48:39 +0100; Dear Dave, many of us in Germany are qrv on Sunday morning in aural cw. Activate Your club-Stn an d listn to our weak sigs! Hans-Albrecht DK 8 ND _____________________________________________________; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-02/msg00113.html (10,112 bytes)
57. Re: LF: component replacements (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Sat, 20 Mar 2004 21:20:16 +0100; Dear Dick, here a short anwer to Your questions. 55, Hans-Albrecht DK 8 ND [email protected] schrieb am 20.03.04 19:54:09: Hello all, I'm not an expert in all the special types of componen; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-03/msg00130.html (10,308 bytes)
58. LF: a step towards 136kHz cores, drivers optocouplers (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Tue, 13 Apr 2004 15:01:49 +0200; [email protected] schrieb am 11.04.04 22:49:27: Hello all, I nearly finished my 50V/15A cont. powersupply. Coming week I'll do some tests to see if it works well. Unfortunatly I can't test; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-04/msg00104.html (10,692 bytes)
59. LF: a step further towards 136kHz, cores, drivers optocouplers (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Tue, 13 Apr 2004 15:20:53 +0200; [email protected] schrieb am 11.04.04 22:49:27: Hello all, I nearly finished my 50V/15A cont. powersupply. Coming week I'll do some tests to see if it works well. Unfortunatly I can't test; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-04/msg00105.html (9,951 bytes)
60. Re: LF: 136kHz station components CNY17 (score: 1): Author: "Hans-Albrecht Haffa" <[email protected]>; Date: Thu, 15 Apr 2004 21:38:31 +0200; Dear Dick, just build an schmit-trigger by Yourself. Take +5V Voltage for the phototransistor, and use a schmitt-Trigger-Nand 4093 after the optocoupler. Because of the hazard of fire and destruction; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-04/msg00146.html (10,975 bytes)

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