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121. LF: RE: Spain on 472 (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Mon, 3 Jun 2013 06:47:59 +0000
Hi Dave, have a look at the URE website: http://www.ure.es/noticias/2167-autorizada-tambien-la-banda-de-472-479-khz.html The band is authorized since 10 May 2013 with 1 W EIRP. 73, Rik ON7YD - OR7T V
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-06/msg00100.html (10,264 bytes)

122. Re: LF: RADCOM (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Thu, 25 Oct 2007 14:57:15 +0200
Mal, who is to blame ? Does Radcom refuse to publish technical articles to keep more space for adds and "fairy tales" ? Or is there not enough entry of technical articles? I am closely cooperating wi
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-10/msg00368.html (11,609 bytes)

123. Re: LF: A bit of light reading (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Thu, 15 Nov 2007 14:56:20 +0100
http://www.scrbg.org/g4jnt/NewLaws.htm Andy, The value for the speed of light must be raised. Yes, because increasing the speed ten times would - let us get rid the annoying time delay in EME QSO's -
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00070.html (10,073 bytes)

124. Re: LF: CLASS D and E (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Sun, 04 Nov 2007 15:46:52 +0100
Hello Mal, with my 136kHz PA (variant of the G3YXM Class-D push-pull) I get 450W output with 56V/9.5A supply, thus 85% efficiency. I once tried a 50W class-E PA and got over 90% efficiency with corre
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00190.html (10,962 bytes)

125. Re: LF: -HELP- MMANA-GAL Antenna analyzer .... can anyone 'code' an array ? (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Fri, 28 Dec 2007 18:49:13 +0100
Graham, attached a MMANA-GAL file that simulates my 136kHz antenna when adapted for 500kHz. Maybe that will be of some help. 73, Rik ON7YD -HELP- MMANA-GAL Antenna analyzer .... can anyone 'code' an
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-12/msg00168.html (11,377 bytes)

126. Re: LF: Antenna tests on 136k and 503k - Results (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 11 Dec 2007 15:23:53 +0100
Dear Jim, thanks for sharing your experimental result with us, most interesting. Did you ever try to put (a part of) the loading coil up in the air ? What I experienced with my 136kHz antenna was tha
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-12/msg00517.html (16,608 bytes)

127. Re: LF: -HELP- MMANA-GAL Antenna analyzer .... can anyone'code' an array ? (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Fri, 28 Dec 2007 21:34:41 +0100
Hello Graham, the load (= loading coil) is at a rather unusual place: at the top of the vertical wire. Or to be exact, one segment below the top. If you want the load just above the feeding point jus
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-12/msg00575.html (14,292 bytes)

128. RE: LF: QRV on 503kHz (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 29 Jan 2008 21:46:59 +0100
Dave, G3ZWH is peaking 559 now. No other signals ... I keep CQ-ing once in a while. 73, Rik ON7YD - OR7T Hi, Rik, John, Rik's signal is 539 here, with the typical 500 kHz QSB. The strange callsign th
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00017.html (12,093 bytes)

129. Re: LF: 500 kHz in Belgium (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 16 Jan 2008 08:39:09 +0100
Pat, the power difference between UK and Belgium is due to the conversion rate Pound / Euro ;-) 73, Rik ON7YD At 00:59 16/01/2008, you wrote: Shouldn't membership of the EU entitle us all to the same
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00023.html (9,636 bytes)

130. Re: LF: 500kHz in Belgium (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 16 Jan 2008 14:21:39 +0100
Dear Walter, our 500 kHz access is for amateur stations, not experimental stations as in Germany. So we can make QSO's. 73, Rik ON7YD Dear Rik, that is very good news in the new year. Congratulations
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00039.html (9,119 bytes)

131. LF: DI2AM on 505kHz (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 29 Jan 2008 21:50:18 +0100
Dear all, DI2AM peaking 599 ... increadible A pitty the DI's cannot make QSO's. 73, Rik ON7YD - OR7T Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00053.html (10,958 bytes)

132. LF: first QSO's on 600m (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 29 Jan 2008 21:30:35 +0100
Dear all, just worked my first QSO's on 600m: 21.01 G3AQC (559, deep QSB) = first ON-G 21.04 GM4SLV (339, peaking 519) = first ON-GM / 1102km 21.09 G3ZWH (529, steady) Sorry for the short QSO's, the
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00124.html (11,115 bytes)

133. LF: QRV on 503kHz (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 29 Jan 2008 16:07:51 +0100
Dear all, I just finished my 500kHz antenna, 9m high and 26m long T-antenna. With a temporary PA (abt 100W) I can get 1.3A into the antenna, guestimated ERP is about 0.5 Watt. Enough to put a nice si
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00181.html (10,198 bytes)

134. LF: 500 kHz antenna (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 16 Jan 2008 09:44:54 +0100
Dear all, I am looking for short term antenna and TX possibilities on 500 kHz. For the antenna I have 2 options: 1. a T-antenna 7m high and 10m top Simulation with MMANA gives a 0.13 Ohm radiation re
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00214.html (10,990 bytes)

135. Re: LF: MF: SM6BHZ (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 29 Jan 2008 22:59:05 +0100
John, heard you 559 calling CQ. Much better than the 339 during our QSO. Going QRT now, tomorrows wakeup is at 05.00 UTC. 73, Rik ON7YD - OR7T .. calling ON7YD on 503.1 kHz, cracking signal here, des
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00220.html (9,741 bytes)

136. LF: Second night on 600m (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 30 Jan 2008 23:29:29 +0100
Hello Dave and all, yes, good activity tonight. I worked GI3PDN, G3DXZ, M0KDW, G3XVL and GW4HXO. 4 countries in 2 days ... 96 to go ;-) Heard: G3AQC, G3ZWH and G0MRF beacon in CW It had been raining
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00296.html (13,813 bytes)

137. Re: LF: 500 kHz in Belgium (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 16 Jan 2008 09:46:48 +0100
Mike, right now were are more than happy with what we got, so we don't want to push our luck ... Maybe later. 73, Rik ON7YD Mike WE0H WD2XSH/16 73, Rik ON7YD At 08:19 16/01/2008, you wrote: On 15/01/
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00339.html (10,797 bytes)

138. LF: First night on 600m (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Wed, 30 Jan 2008 09:31:13 +0100
Dear all, a short overview of my first night on 600m: - 4 stations worked: G3AQC, GM4SLV (1100km), G3ZWH and G3WCB in that order - reception reports from OH (OH1LSQ, 1680km), SM, DL, SP, OK, PA - hea
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00354.html (12,162 bytes)

139. Re: LF: Fenceline longwire (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 22 Jan 2008 15:58:05 +0100
Johan, indeed there are some limitations to MMANA. And when getting a negative radiation resistance one should get cautious. But for small verticals and small loops MMANA seems to work OK. I am using
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00401.html (12,145 bytes)

140. Re: LF: OR7T 419 to 519 in KP03SD calling CQ on 503.1kHz (score: 1)
Author: Rik Strobbe <[email protected]>
Date: Tue, 29 Jan 2008 21:38:05 +0100
Hello Paul-Henrik, nice to be heard at 1680km. Calculated Rrad of my antenna is 0.25 Ohm and antennacurrent is 1.4 A so theoretical ERP is 0.5 Watt. But I guess that the many trees surrounding the an
/rsgb_lf_group-archives/html/rsgb_lf_group/2008-01/msg00415.html (11,793 bytes)


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