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121. LF: QSO (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Tue, 3 Apr 2007 20:27:57 +0100; Dear Finbar, thanks fer QSO ur sigs were S9 then dropped to S8. When you went to short Ant. I heard you at S5- S6 equal to my noise but only readability 2 to 3.and then signal dropped again into nois; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-04/msg00342.html (9,151 bytes)
122. LF: 500 Activity (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Mon, 28 May 2007 12:18:51 +0100; Hi All, Things looking up on 500, had 4 nice QSO's this morning G3UNT, G4GDR, G3XIZ, and new to me G3XAQ, Alan in Canterbury. Thanks 73 Laurie.; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00018.html (8,910 bytes)
123. Re: LF: test (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Mon, 28 May 2007 14:19:43 +0100; Test de GW4HXO Hi Michael, Heard you in QSO earlier with GW4UEP and I think GI3PDN. Called you but no reply guess Loop in wrong direction. You were readable at 559.; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00019.html (10,295 bytes)
124. LF: 500kHz (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Sun, 27 May 2007 12:45:17 +0100; M0FMT 12:15 your CQ sigs 559 here, but no reply to my call ! 73 Laurie G3AQC; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00064.html (9,807 bytes)
125. LF: 500kHz New Stn. (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Sat, 5 May 2007 12:35:14 +0100; Hi All , Just worked new station G4GDR on 502.0 Adrian nr Swindon. 73 Laurie.; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00188.html (8,916 bytes)
126. LF: 500kHz Distance (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Wed, 23 May 2007 09:48:57 +0100; Hi Dave, NO the top load does reduce the ground resistance ,it also improves the radiation resistance as you suggest, but this is a minor improvement compared to the quite dramatic effect of top load; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00210.html (10,867 bytes)
127. LF: 500kHz testing (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Sat, 5 May 2007 22:04:24 +0100; WGT test recieved here at 2150 73 Laurie. Attachment: WGT Test.jpg Description: JPEG image; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00229.html (9,150 bytes)
128. LF: 500kHz Distance (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Tue, 22 May 2007 09:30:25 +0100; The problem with an erp limit as low as 0.1W is that there is no incentive to develop better antennas. We can easily develop enough power to drive even the most inefficient of antennas. Not like 136; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00252.html (11,488 bytes)
129. LF: 500kHz (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Mon, 21 May 2007 15:58:32 +0100; Hi Vic, Re. Linear Amp, have a look at design by SM0VPO (Ten Watt Linear Amplifier ) just Google, should find it. I use his basic design just put a few more turns on inductors. 73 Hope see you on 500; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00312.html (9,921 bytes)
130. LF: 500kHz Distance (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Tue, 22 May 2007 15:15:51 +0100; I am very encouraged by the response to my comments on our erp limit. Regarding ground loss, the best way to reduce this is not to bury wire in the ground but to put it in the air ! 1 metre of wire i; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-05/msg00379.html (10,542 bytes)
131. LF: 500kHz activity (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Wed, 27 Jun 2007 12:41:53 +0100; G3UNT has been calling CQ all morning (still calling ) he has a good signal here on the south coast. I am sure he would appreciate a call. Laurie G3AQC; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-06/msg00133.html (9,030 bytes)
132. LF: 500kHz signal (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Fri, 29 Jun 2007 13:22:06 +0100; Tom G3OLB, now good 559 here on 502.85kHz Good to hear you on 500. 73 Laurie; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-06/msg00225.html (9,220 bytes)
133. Re: LF: Getting QRV on 500kHz from Shetland? (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Fri, 29 Jun 2007 13:25:49 +0100; and I'm winding myself up to get involved. I just love the idea of keeping 500kHz alive with hand keyed CW. Will try to get a pre-amp built for the RX loop over the weekend. I suppose a first test wo; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-06/msg00412.html (12,501 bytes)
134. Re: LF: Getting QRV on 500kHz from Shetland? (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Fri, 29 Jun 2007 12:55:24 +0100; John says..............."100mW erp on 500kHz might be pushing from this remote location" Yes I agree, but it would be a challenge, so worthwhile in my opinion. Laurie G3AQC Chichester on the south co; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-06/msg00414.html (13,799 bytes)
135. LF: 137 Again (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Tue, 24 Jul 2007 23:58:16 +0100; John thanks for listening, but I must close now (midnight local ). Lawrence, will try again tomorrow night 20:00 utc . 73 Laurie G3AQC; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-07/msg00010.html (10,220 bytes)
136. LF: 137 Again (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Sun, 29 Jul 2007 11:19:31 +0100; Hi Laurence, Have set up to transmit on 136.319kHz, will be on tonight from 19:45 to 23:45 utc on 136.319 QRSS 60 all being well. Thanks for listening 73 Laurie; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-07/msg00018.html (10,424 bytes)
137. LF: 137 Again (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Fri, 27 Jul 2007 18:28:54 +0100; Laurence, Fixed ant. so will transmit again tonight start 20:00utc freq 137.699. QRSS60 73 Laurie; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-07/msg00079.html (10,510 bytes)
138. LF: 137 again (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Sat, 28 Jul 2007 09:39:35 -0700; Hi Laurence, There is some doubt about 137.699 as a suitable frequency for West/East beacon, see recent mail from Harmut. 136.316 or 136.320 have been suggested as alternatives. Are either of these c; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-07/msg00103.html (10,703 bytes)
139. LF: 137 Again (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Thu, 26 Jul 2007 21:09:14 +0100; Hi Laurence and others, Regret cannot transmit tonight, strong winds have brought down part of antenna. 73 Laurie G3AQC; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-07/msg00138.html (10,623 bytes)
140. LF: 137 Again (score: 1): Author: "lawrence mayhead" <[email protected]>; Date: Thu, 26 Jul 2007 14:58:49 +0100; Hi Joe and Laurence, Sorry Joe it was'nt me, I closed at 00:00 local. Will transmit again tonight from 20:00 utc 73 Laurie.; /rsgb_lf_group-archives/html/rsgb_lf_group/2007-07/msg00139.html (10,621 bytes)

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