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41. Re: LF: Off topic (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 13 Mar 2005 13:31:25 +0100
Dear Brian, Thanks for your reply. I also possess Reference Data for Radio Engineers. I found the info you proviided on page 921. This is what I was looking for! 73, Dick, PA0SE At 20:48 10-3-05, you
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-03/msg00237.html (10,255 bytes)

42. LF: New station ON5VK (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sat, 09 Apr 2005 16:55:12 +0200
Today I worked a for me new station: ON5VK, Marcel at Namur. Received RST 559, sent RST 569. 73, Dick, PA0SE JN22GD
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-04/msg00117.html (7,504 bytes)

43. LF: Siemens impedance measuring set 3R217p (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 22 May 2005 17:35:10 +0200
To All from PA0SE I have been presented a beautiful Siemens Scheinwiderstands-Messbrücke type 3R217p in immaculate condition but unfortunately without a manual. I found out the manual is really neede
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-05/msg00130.html (8,289 bytes)

44. Re: LF: Re: Siemens impedance measuring set 3R217p (score: 1)
Author: Dick Rollema <[email protected]>
Date: Mon, 23 May 2005 16:16:12 +0200
Dear Walter, Many thanks for this hint. Rainer Förtig can supply a used copy of the manual for 6 Euro + 3,48 Euro shipping cost. Very cheap indeed! I immediately ordered the manual. 73, Dick, PA0SE A
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-05/msg00137.html (10,221 bytes)

45. LF: Article om LF ion QST (score: 1)
Author: Dick Rollema <[email protected]>
Date: Wed, 13 Jul 2005 09:55:27 +0200
To All from PA0SE QST of July 2005 features an article "The Transatlantic on 2200 Meters" by Joe Craig, VO1NA and Alan Melia, G3NYK. An excellent story with beautiful pictures of Joe's transmitter an
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-07/msg00081.html (8,370 bytes)

46. LF: SAQ (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 03 Jul 2005 20:32:44 +0200
To All from PA0SE I also had good reception of SAQ on 2 and 3 July. The morse code of the messages was perfect. The SAQ website of SAQ shows Lars Kalland at the key of SAQ. So either Lars has an exce
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-07/msg00197.html (9,222 bytes)

47. Re: LF: Software - a bit off-topic (score: 1)
Author: Dick Rollema <[email protected]>
Date: Fri, 01 Jul 2005 13:41:46 +0200
Dear John, Thanks for providing this URL. I used to use a very old program running under DOS for designing filters but the AADE one looks like a very much better and improved tool. I also like the tu
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-07/msg00210.html (10,273 bytes)

48. Re: LF: Change of Direction (score: 1)
Author: Dick Rollema <[email protected]>
Date: Tue, 30 Aug 2005 10:02:04 +0200
Dear Peter, I am sorry that you leave LF but fully understand the reason why. I still fondly remember my very first QSO on 136 kHz: it was with you on 24 August 1998. It was almost as thrilling as my
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-08/msg00020.html (10,491 bytes)

49. LF: New station PA0VHF (score: 1)
Author: Dick Rollema <[email protected]>
Date: Thu, 11 Aug 2005 16:20:36 +0200
To All from PA0SE Just worked a new stattion: Jan, PA0VHF at Rozenburg, West of Rotterdam. (Not to be confused with Dick, PA4VHF, who made a brief appearance some time ago.) PA0VHF had only small out
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-08/msg00155.html (8,609 bytes)

50. Re: LF: Re: New station PA3GXB (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 07 Aug 2005 15:38:08 +0200
Derek, G3GRO wrote: At 23:04 6-8-05, you wrote: To Dick,PA0SE et al I coupled up my LF antenna and loading coil for the first time for several months to take a look at the QRM level from the new Lora
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-08/msg00180.html (9,739 bytes)

51. LF: New station PA3GXB (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sat, 06 Aug 2005 11:12:09 +0200
To All from PA0SE This Saturday morning I worked a new station: Hans, PA3GXB. Location is Rozenburg, West of Rotterdam. Loc JO21CV. He was RST 5 8/9 9 with me. Hans is using a Ropex "The First" and w
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-08/msg00184.html (8,479 bytes)

52. Re: LF: RE: Soil Conductivity Measurement (score: 1)
Author: Dick Rollema <[email protected]>
Date: Mon, 01 Aug 2005 14:50:04 +0200
To All from PA0SE Mike, G3LHZ, wrote: Has anyone on the list experience in measuring ground conductivity at such frequencies? I do it by first resonating the aerial system at 137kHz. Then I measure t
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-08/msg00204.html (10,717 bytes)

53. Re: LF: RE: Re: Advice will be gratefully received (score: 1)
Author: Dick Rollema <[email protected]>
Date: Wed, 28 Sep 2005 14:03:02 +0200
Dear Chris, I use four IRF520 FET's in parallel push pull class B in my transmitter. The FET's are run at 40 V. The gates are driven via a transformer. At first I suffered from blown FET's till I fou
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-09/msg00033.html (12,309 bytes)

54. Re: LF: PA0SE this night (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 04 Sep 2005 10:48:01 +0200
Dear Jeff, Many thanks for the useful report and screenshot. The transmission was QRSS60 DFCW. The frequency was about 135920 Hz, not 135922 Hz, as I inadvertently announced yesterday in my message t
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-09/msg00165.html (9,219 bytes)

55. LF: PA0SE Testing (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sat, 03 Sep 2005 16:33:19 +0200
Thanks Dave and Gary for report and screenshot. I will be on the air tonight using QRSS60 DFCW and starting about 21OO UTC. Frequency 135922 Hz. 73, Dick, PA0SE JO22GD
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-09/msg00169.html (8,090 bytes)

56. Re: LF: Re: How measuring Ground conductivity ? (score: 1)
Author: Dick Rollema <[email protected]>
Date: Tue, 15 Nov 2005 13:56:20 +0100
Hello Bryan, The earth resistance is frequency dependent. Measurement at 50Hz says nothing about the value at 137kHz. For more info consult ON7YD's web site: http://www.qsl.net/on7yd/136khz.htm. I me
/rsgb_lf_group-archives/html/rsgb_lf_group/2005-11/msg00099.html (14,550 bytes)

57. LF: SAQ on 19.02.2006 (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 19 Feb 2006 14:32:31 +0100
I had very good reception of the 1300 UTC transmission by SAQ on 19 February 2006. I used a SPM-12 selective voltmeter by Wandel & Goltermann, followed by a 200Hz wide audiofilter, centred on 1000Hz.
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00155.html (8,357 bytes)

58. LF: Off topic (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sun, 12 Feb 2006 09:42:59 +0100
I was asked to pass this on to as many amateurs as possible 73, Dick, PA0SE DEAR SIR DO NOT MISS THE BARGAIN !!! Truro 2006 You know already about our SILENT KEY SALE (N.J. Birkett G3EKX). Now everyt
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-02/msg00507.html (10,418 bytes)

59. Re: LF: Frequencies for TA from Europe (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sat, 25 Mar 2006 15:31:30 +0100
Thanks Warren, 73, Dick, PA0SE At 14:57 25-3-06, you wrote: Dick, The segment now in use is centered on 136.318. The old frequency was abandonded due to interference from Navy station NPG in Californ
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00072.html (9,154 bytes)

60. LF: Frequencies for TA from Europe (score: 1)
Author: Dick Rollema <[email protected]>
Date: Sat, 25 Mar 2006 14:54:50 +0100
To All from PA0SE I have not followed the T/A news for some time. That explains my following question. The unofficial bandplan for the 136kHz band lists 135.90 - 135.98kHz as the preferred segment fo
/rsgb_lf_group-archives/html/rsgb_lf_group/2006-03/msg00074.html (8,538 bytes)


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