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1. LF: 600m (score: 1)
Author: Laurence KL7 L <>
Date: Mon, 28 Jul 2014 11:24:06 -0800
The sun is slowly retreating Southwards but we are still in Nautical twiglight at best here in Alaska. Nil returns from 137KHz except JA @ around 5000Kms on QRSS which we havent lost thru the summer
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00089.html (8,849 bytes)

2. Re: LF: 600m (score: 1)
Author: Laurence KL7 L <>
Date: Mon, 28 Jul 2014 19:49:15 -0800
Our mosquitoes are slooow but BIG and if they get yer.... WE2XPQ WSPR2 600m on at 0330Z 250W On Jul 28, 2014, at 12:06 PM, wrote: On Mon, Jul 28, 2014 at 3:24 PM, Laurence KL7 L wro
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-07/msg00091.html (9,410 bytes)

3. LF: 42kHz (score: 1)
Author: Laurence KL7 L <>
Date: Thu, 21 Aug 2014 08:17:05 -0800
Wonder if anyone can ident the signal seen on 42kHz - I know there are a lot of ultrasonics near that freq but it appears iono based but appeared on my sunrise so Im thinking Indo/AsiaPac or Northern
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-08/msg00115.html (8,025 bytes)

4. LF: XPQ (score: 1)
Author: Laurence KL7 L <>
Date: Tue, 2 Sep 2014 06:49:21 -0800
XPQ is on CW 18WPM near 475kHz thru the day ground wave profiling. 200W into Inv L, just shy of quarter wave . Around 1.8A current WSPR 2 overnight produced poor conditions with increasing Proton flu
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00004.html (8,085 bytes)

5. LF: XPQ Alaska and KH6 ops (score: 1)
Author: Laurence KL7 L <>
Date: Mon, 8 Sep 2014 13:09:05 -0800
WE2XPQ Palmer Alaska is on CW info loop 475kHz thru today for continued ground wave profiling - will be on WSPR2 tonight. 200W TPO - and a few Watts ERP. Mix Pol. We tested a full size squashed (over
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00029.html (9,420 bytes)

6. Re: LF: XPQ Alaska and KH6 ops (score: 1)
Author: Laurence KL7 L <>
Date: Tue, 9 Sep 2014 10:48:42 -0800
Hi Laurence, Nice experiment. A few OMs tried a full size dipole for MF now, me too. TX wise it is not as bad as expected by some theoretical focused OMs, despite the little height above ground. For
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00031.html (11,300 bytes)

7. LF: KH6 Ops BL10SP (score: 1)
Author: Laurence KL7 L <>
Date: Tue, 16 Sep 2014 21:32:48 -0800
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00066.html (9,442 bytes)

8. LF: xsh/20 into kh6 (score: 1)
Author: Laurence KL7 L <>
Date: Sun, 21 Sep 2014 00:27:23 -0800
after a dodgy start and still some optimization still needed xsh /20 decoded on wspr2 on 630m this evening -just over 4000kms - other signals seen but just a dB or so short of decode - Ill do better
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00094.html (8,223 bytes)

9. LF: KH6 ops (score: 1)
Author: Laurence KL7 L <>
Date: Mon, 22 Sep 2014 11:56:06 -1000
Ill be qrv overnight from appx 04z on wspr2 normal 474.2 usb dial - plus a screen on argo dot10 slow starting 475.000 and up - auto freshes - open path to zl and vk but obscured by massive volcano to
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00106.html (9,096 bytes)

10. LF: KH6Ops (score: 1)
Author: Laurence KL7 L <>
Date: Fri, 26 Sep 2014 12:09:17 -0800
Ive got a couple more days working from here on Maui and interesting MF rx results to date - we have another MF station on Molakai WH2XCR on an adjacent island - that station has a clear view of the
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-09/msg00118.html (8,861 bytes)

11. LF: 137 and MF snappers (score: 1)
Author: Laurence KL7 L <>
Date: Sat, 4 Oct 2014 11:20:17 -0800
http://kl7l.com/LF00000.jpg is the new link for 136/137kHz snaps - is now online and subj to operational need and TX qrm this will be the LF link (Ant is L400b probe or VE7SL clone) - if you want me
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00076.html (8,688 bytes)

12. LF: KH6 and VE6 MF Ops (score: 1)
Author: Laurence KL7 L <>
Date: Sat, 4 Oct 2014 14:24:59 -0800
Thanks for the all the WSPR signals over the past couple of weeks from KH6, VE6 South and VE6 North. Here (hopefully) is a picture of the temp antennae set up just South of Ft Macmurray Alberta I was
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00095.html (10,324 bytes)

13. LF: MF W7/ KL7 to VK2 (score: 1)
Author: Laurence KL7 L <>
Date: Tue, 7 Oct 2014 08:36:00 -0800
Conditions are improving as it gets into winter here in Alaska - this morning David VK2DDI received WE2XPQ Alaska TransPacific at around 12000Kms on 475kHz with a couple of decodes around 1300Z , and
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00148.html (8,803 bytes)

14. LF: VK to KL7 again MF - (score: 1)
Author: Laurence KL7 L <>
Date: Wed, 8 Oct 2014 13:16:15 -0800
No WSPR decodes and poorer s/n overnight perhaps between East coast Australia and Alaska overnight, with perhaps little elevated K's my end but partial DFCW10 ID from the VK2DDI Berry mountain snappe
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00172.html (8,601 bytes)

15. LF: XPQ Alaska (score: 1)
Author: Laurence KL7 L <>
Date: Wed, 8 Oct 2014 21:12:26 -0800
Im on at 0434Z WSPR2 474.2 dial plus tone, then a DFCW 2Hz Dash high 475.010ish kHz XPQ, repeating every 6 mins - until my dawn - abt 300W output Laurence KL7L WE2XPQ
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00177.html (7,919 bytes)

16. LF: STW34NB20 - used in a number of MF and LF PA designs (score: 1)
Author: Laurence KL7 L <>
Date: Fri, 10 Oct 2014 07:16:20 -0800
Im sure a few people have been thru this loop but as this is now an obsoleted item does anyone have any (tested) recommendations for a Class D or E TO-247 replacement - Id like to go up to 600V Vds (
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00188.html (11,367 bytes)

17. LF: Alternatives Re: STW34NB20 - used in a number of MF and LF PA designs (score: 1)
Author: Laurence KL7 L <>
Date: Mon, 13 Oct 2014 16:15:41 -0800
Alan/Jack/Stefan/Steve and all - thanks for the feedback, and as described its all a matter of compromise but the new vertical structure FET Mesh designs seem to be reasonable with similar the lower
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00203.html (16,765 bytes)

18. Re: LF: Re: Alternatives Re: STW34NB20 - used in a number of MF and LF PA designs (score: 1)
Author: Laurence KL7 L <>
Date: Mon, 13 Oct 2014 17:48:52 -0800
google Alaska PFD
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00205.html (11,858 bytes)

19. LF: : Alternatives Re: STW34NB20 - STW70N60M2?? Jays response (score: 1)
Author: Laurence KL7 L <>
Date: Tue, 14 Oct 2014 09:00:25 -0800
Thanks Jay - Yep its a concern especially having read and digested your warnings on changing to higher gate capacity devices, but Im only going to use the new FET devices, or at least test them, in t
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00212.html (17,178 bytes)

20. Re: LF: [OT] Solar event (score: 1)
Author: Laurence KL7 L <>
Date: Sat, 25 Oct 2014 17:24:35 -0800
Impressing! Congrats to your new Loran world wide grabber, Edgar. 73, Stefan Am 22.10.2014 22:59, schrieb edgar: Hi, The propagation improvement of a Solar event captured on the 22-10-2014 while mon
/rsgb_lf_group-archives/html/rsgb_lf_group/2014-10/msg00307.html (9,616 bytes)


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