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Total 32 documents matching your query.

1. Re: LF: Disappearing 'dits' (score: 1)
Author: "Mike Dennison" <>
Date: Sun, 13 Jun 1999 18:32:16 +0100
The idea of an LF antenna being too narrow for CW is a myth, certainly for the very lossy tiny-fraction-of-a-wavelength antennas we use. With practical losses of several ohms in a loading coil and te
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00080.html (9,269 bytes)

2. Re: LF: SCW report saturday june 12 (score: 1)
Author: "Mike Dennison" <>
Date: Tue, 15 Jun 1999 20:41:58 +0100
PA3GUC wrote: I 'saw' 2 transmissions in the slow cw part of the LF band. The first from Geri was ok and stable within 1 Hz; a second signal was okay for the signal strength, but especially the first
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-06/msg00096.html (9,769 bytes)

3. Re: LF: Saturday morning (score: 1)
Author: "Mike Dennison" <>
Date: Sat, 10 Jul 1999 17:01:47 +0100
This morning i put DJ5BV and DF0WD in the log. Think G3XDV tried calling-but here nil !Whats the ant and pwr ? Yes, Wolf, I did call and have called many times. Others also calling you - for instanc
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-07/msg00034.html (8,819 bytes)

4. LF: 73kHz skeds? (score: 1)
Author: "Mike Dennison" <>
Date: Sat, 7 Aug 1999 19:46:33 +0100
I have set my station up on the 73kHz band again and am looking for skeds. I can use conventional or slow CW. Any takers? Call me on 01707 331546. -- Mike, G3XDV
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-08/msg00063.html (8,037 bytes)

5. LF: Effects of eclipse on HBG (score: 1)
Author: "Mike Dennison" <>
Date: Wed, 11 Aug 1999 18:52:59 +0100
95% solar eclipse due at 1119 local (1019UTC). Viewed at work - unexpectedly cool, strange light (like looking through polaroid sunglasses) and got dim but not dark. Very few clouds. Measured HBG on
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-08/msg00088.html (8,493 bytes)

6. Re: LF: Effects of eclipse on HBG (score: 1)
Author: "Mike Dennison" <>
Date: Wed, 11 Aug 1999 19:10:14 +0100
Furthe to my last message . . Measured HBG on 75kHz at home throughout the day using ON5OO's software. I expected a peak as the D layer absorption reduced. Actual plot showed the reverse! Ah, of cour
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-08/msg00089.html (8,422 bytes)

7. LF: weekend report 21/22 August (score: 1)
Author: "Mike Dennison" <>
Date: Mon, 23 Aug 1999 19:31:29 +0100
What a weekend! Heard 18 different stations in 7 countries. The Campen Lighthouse expedition caused lots of activity, and a Ropex pile-up, though they couldn't hear me. Worked 6 countries, including
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-08/msg00146.html (9,163 bytes)

8. LF: Holiday activity (score: 1)
Author: "Mike Dennison" <>
Date: Mon, 23 Aug 1999 19:37:58 +0100
Owing to being exhausted after a big job at work, I will not be packing the LF gear when going to GW this week. I will have a receiver and loop antenna, but all the Tx, coils and wire antenna stuff i
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-08/msg00148.html (7,761 bytes)

9. LF: Holiday activity from GW (score: 1)
Author: "Mike Dennison" <>
Date: Tue, 7 Sep 1999 18:27:15 +0100
Just back from a very relaxing two weeks in south-west Wales. Did not take a transmitter or mast this summer owing to exhaustion! Did a little receiving, though, using my 1m loop. Bought a new kite -
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-09/msg00020.html (8,592 bytes)

10. Re: LF: OK/OZ (score: 1)
Author: "Mike Dennison" <>
Date: Sun, 12 Sep 1999 10:14:53 +0100
Did anyone else hear OZ1KMR and OK1FIG working this afternoon (Saturday)? I just heard the end of OZ1KMR's over and he was signing off, did they make a QSO? No sign of Petr's signal here unfortunatel
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-09/msg00033.html (8,530 bytes)

11. LF: Weekend report 25/26 September (score: 1)
Author: "Mike Dennison" <>
Date: Sun, 26 Sep 1999 18:40:47 +0100
Saturday 25 September Got up early but QRM from next door on until 0700. Very low activity - worked all I heard - and had to go to work at 0930. QRN too bad later. Had a QRSs contact with DK8KW ('O'/
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-09/msg00099.html (9,543 bytes)

12. Re: LF: Rising activity in SM (score: 1)
Author: "Mike Dennison" <>
Date: Tue, 28 Sep 1999 19:24:19 +0100
I wouldn't recommend the Datong convertor for use on long wire aerials. It overloads too easily for serious use. Well, yes it does, but it is very easy to build an attenuator and/or tuned circuit to
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-09/msg00116.html (8,893 bytes)

13. LF: GW/P expedition report (score: 1)
Author: "Mike Dennison" <>
Date: Wed, 3 Nov 1999 18:29:28 +0000
Went to my holiday home in south-west Wales for a week and took the LF station with me. The intention was to fly a kite antenna on Sunday, but I had a 50ft mast with me as well. A generator was hired
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-11/msg00016.html (10,581 bytes)

14. LF: GI (score: 1)
Author: "Mike Dennison" <>
Date: Tue, 9 Nov 1999 18:43:03 +0000
After a few days off the air (had one day back at work after my holiday then went down with a huge migraine, and then put my back out!), I worked GI3PDN for country number 11. He is a good signal wit
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-11/msg00034.html (7,643 bytes)

15. LF: sky/ground wave (score: 1)
Author: "Mike Dennison" <>
Date: Sun, 14 Nov 1999 13:44:31 +0000
From Dave G3YMC 2. Propagation. Mike Dennison says that the Greek RTTY is weak or inaudible during the day. This was the case here during the summer, but now winter is approaching it is copyable thro
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-11/msg00070.html (9,863 bytes)

16. Re: LF: B&K Audio Amps (score: 1)
Author: "Mike Dennison" <>
Date: Sun, 21 Nov 1999 12:39:58 +0000
The first thing to check is whether you ordered the Normal or the Professional version. You would think that the Professional would be better but it actually has a lower cut-off frequency. I don't kn
/rsgb_lf_group-archives/html/rsgb_lf_group/1999-11/msg00167.html (9,699 bytes)

17. Re: LF: HB9ASB QRT (score: 1)
Author: "Mike Dennison" <>
Date: Mon, 3 Jan 2000 12:51:55 +0000
Unfortunately I lost my LF-antenna in the storm and it is not to repair. May be I will come back one day in the next millennium. In the meantime I wish you all a happy new year and good DX. Toni, I a
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00008.html (8,606 bytes)

18. Re: LF: LF antenna (score: 1)
Author: "Mike Dennison" <>
Date: Sat, 8 Jan 2000 19:37:30 +0000
ON7YD wrote: A bit desperate I started my final attempt, again inspired by Mike, G3XDV, who reported an improvement of his antenna by adding some inductance at the top of the vertical section of his
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00062.html (12,038 bytes)

19. Re: LF: LF antenna (score: 1)
Author: "Mike Dennison" <>
Date: Sun, 9 Jan 2000 09:57:26 +0000
ZL2CA wrote: The practical disadvantages of an elevated loading coil are mechanical support needed, and it surviving high voltages on transmit, during wet or humid weather. I am not a supporter of us
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00068.html (10,749 bytes)

20. Re: LF: 73kHz (score: 1)
Author: "Mike Dennison" <>
Date: Sat, 15 Jan 2000 16:42:10 +0000
From Dave G3YMC Friday night was activity night on 73kHz, with more stations on the band at the same time than I have ever known! Rugby was transmitting a different sort of data and the sideband nois
/rsgb_lf_group-archives/html/rsgb_lf_group/2000-01/msg00143.html (9,040 bytes)

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