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261. Re: LF: Re: 500kHz attenuation graphs? (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Wed, 4 Nov 2009 22:48:19 +0000
http://downloads.bbc.co.uk/rd/pubs/reports/1975-01.pdf Older editions of the NAB Engineering Handbook at least had graphs for the MW broadcast band if I remember correctly but someone seems to have
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00754.html (11,466 bytes)

262. LF: 500kHz conditions good (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Tue, 17 Nov 2009 22:39:23 +0000
Not sure why, but I am getting some excellent reports on 500kHz WSPR this even from some decent distances. Are conditions especially good for some reason tonight? My WSPR beacon will run overnight to
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00756.html (9,424 bytes)

263. Re: LF: Re: Re: G3XBM on CW at noon? (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sun, 15 Nov 2009 16:25:58 +0000
PS G3XBM nw cq at 1550 utc. Other stns on band. Am I the only one that can copy him ? g3kev   -- Original Message -- From: [email protected] mal hamilton To: [email protected] Roger Laptho
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00758.html (19,709 bytes)

264. Re: LF: G3XBM: 500kHz ERP increased by 6dB - WSPR reports please (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Fri, 6 Nov 2009 21:56:37 +0100
Yes, I have this data via the WSPR database (selecting G3XBM/GM4SLV/forever/250spots). Definitely better than ever before. Will leave it overnight to seewho else finds me. Thanks again John 73s Roger
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00774.html (12,455 bytes)

265. Re: LF: Running mW wspr (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sun, 15 Nov 2009 18:51:05 +0000
 2009-11-15 18:30   G0NBD   0.503898   -27   0   IO83lk   0.2   GM4SLV   IP90gg   766   7   2009-11-15 18:32   G0NBD   0.503898   -28   0   IO83lk   0.2   GM4SLV   IP90gg   766   7    Crazy system .
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00808.html (14,394 bytes)

266. LF: 500kHz WSPR - not tonight (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sat, 14 Nov 2009 19:59:39 +0000
Unfortunately my antenna seems to have been upset by the wet weather and I cannot get it to match on 500kHz. So, although I planned to TX some WSPR tonight I will only be able to listen. Hopefully la
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-11/msg00810.html (9,230 bytes)

267. LF: 500kHz CW CQ CQ.... (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Mon, 7 Dec 2009 18:58:40 +0000
I'm calling CQ on ~501.8kHz but getting no responses as yet.... 73s Roger G3XBM -- -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM    GQRP 1678      ISWL G11088
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00096.html (9,382 bytes)

268. Re: LF: 500kHz WSPR (last time before trying 136kHz WSPR) (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Wed, 2 Dec 2009 19:31:36 +0000
Alberto (et al), Within the WSPR sub-band and currently around 503.886kHz but may move later to avoid QRO stations. My WSPR beacon will run overnight tonight. 73s Roger 2009/12/2 Alberto di Bene <dib
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00152.html (11,067 bytes)

269. Re: LF: 500 pirate (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sun, 6 Dec 2009 10:40:32 +0000
Some G7 stn calling me in Beacon  mode giving me 557 report and Loc. Could be a Pirate, unusual procedure. G3KEV   -- -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM    GQRP 1678    
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00204.html (10,337 bytes)

270. Re: LF: Re: Re: Noise cancelling by using optic transmission of RX signals (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sat, 19 Dec 2009 17:16:59 +0000
Total tosh Mal.  You clearly don't understand how E-probe antennas work. 73s and happy Christmas Roger G3XBM 2009/12/19 mal hamilton <[email protected]> I said recently that the wire connecting t
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00294.html (15,890 bytes)

271. Re: LF: LF/MF ACTY (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Mon, 21 Dec 2009 13:35:30 +0000
I have never heard LF/MF so quiet over the years since it all started. In the past most of the DX that I have worked was around XMAS time. The wx at present in Scarborough is minus 2 C and covered i
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00391.html (11,244 bytes)

272. Re: LF: 500kHz simple 5W TX/RX transverter >>DATA MODES<< (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sun, 13 Dec 2009 11:05:02 +0000
-- -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM    GQRP 1678      ISWL G11088
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00407.html (21,338 bytes)

273. Re: LF: Tnx fer Xmas day QSO G3KEV es XIZ; HNY to all. (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Fri, 25 Dec 2009 13:25:47 +0000
A very happy Christmas to everyone here. Thank you all for your encouragement and help on 500kHz these last few months. I hope Father Christmas brought you lots of nice ham gear/books and the New Yea
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00417.html (11,777 bytes)

274. Re: LF: G7NKS running WSPR on 137.65 (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sat, 26 Dec 2009 19:20:57 +0000
Dear LF,   I have reconfigd my ant and vario for 137 in advance of possibly running some tests of some new kit with G3XIZ later this week but am currently running a vy QRPppp WSPR system as a pre-te
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00473.html (12,446 bytes)

275. LF: 500kHz WSPR (last time before trying 136kHz WSPR) (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Wed, 2 Dec 2009 17:29:26 +0000
This evening I'm TXing on 500kHz WSPR (1mW ERP) and would appreciate reports. Tomorrow I plan to modify the TX PA and ATU for some 136KHz WSPR tests (<<1mW ERP) over the weekend. 73s Roger G3XBM -- -
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00519.html (9,721 bytes)

276. Re: LF: 500kHz CW CQ CQ.... (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Mon, 7 Dec 2009 21:46:17 +0000
Called for about 10 mins at 12wpm at 2130z but nothng heard Rik. Back to WSPR.... 73s Roger G3XBM 2009/12/7 Rik Strobbe <[email protected]> Roger, I have been listeing but only heard GW3UEP
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00547.html (11,568 bytes)

277. LF: Skywave on 500kHz (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Thu, 3 Dec 2009 18:04:19 +0000
In the evenings I'm surprised just how good my reports are from F6CNI some 418kms away near Paris. Last night my 1mW ERP was being received at 0dB S/N on WSPR and already he's given me -3dB again ton
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00565.html (9,608 bytes)

278. Re: LF: 500kHz simple 5W TX/RX transverter >>DATA MODES<< (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Wed, 9 Dec 2009 23:27:09 +0000
-- -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM    GQRP 1678      ISWL G11088
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00580.html (16,779 bytes)

279. LF: WSPRing overnight (500kHz) (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Wed, 2 Dec 2009 23:41:59 +0000
My ~1mW ERP 500kHz WSPR beacon is running through the night and any DX reports would be much appreciated, as always. 73s Roger G3XBM -- -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00649.html (9,150 bytes)

280. Re: LF: HOT 500 RX (score: 1)
Author: Roger Lapthorn <[email protected]>
Date: Sat, 19 Dec 2009 22:57:14 +0000
  Using a marine RX Haghenuk EE 430 at present 10 kcs - 30 mcs. Hot RX on 500 kcs de G3KEV   -- -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk G3XBM    GQRP 1678      ISWL G11088
/rsgb_lf_group-archives/html/rsgb_lf_group/2009-12/msg00667.html (10,528 bytes)


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