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321. LF: VO1NA (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sat, 03 Nov 2018 17:40:46 +0100
Hello Joe, Despite severe static reception appeared to be excellent. See the attachment. Received on my mini-whip antenna and Afdedri SDR. Plot generated using a Linrad overnight recording in fast pl
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00015.html (9,593 bytes)

322. Re: LF: VO1NA (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sat, 03 Nov 2018 22:00:54 +0100
Hello Joe, 10 WPM CW should be fine. The first Candian NDB's are already audible here. Earlier this week propagation featured the north and I had splendid reception of LT-305 from Alert and also for
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00025.html (10,060 bytes)

323. Re: LF: VO1NA (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sat, 03 Nov 2018 22:14:09 +0100
Hello Joe, I just checked 137.777 and I can hear a weak carrier. I will start my overnight recording right now. You can transmit anywhere you like, as I can analyse any channel between 100 and 600 kH
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00026.html (9,809 bytes)

324. Re: LF: JT9 475 kHz (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sun, 04 Nov 2018 11:17:52 +0100
Hello Rik, Regarding nill reception from USA east coast JT9 stations, propagation has turned north over the last week. Reception of US NAVTEX has completely vanished, but I had splendid reception las
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00038.html (9,424 bytes)

325. Re: LF: VO1NA (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sun, 04 Nov 2018 15:03:37 +0100
Hello Joe, Attached is the linrad overnight reception plot of your CW signal. I have aural copy early on and will sent an audio clip later on. There seems to be a break in the transmission. 73, Roelo
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00043.html (10,746 bytes)

326. Re: LF: VO1NA (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sun, 04 Nov 2018 16:05:20 +0100
Hello Joe, Please find a short audio clip of your CW signal attached. The filter bandwidth is about 12 Hz. 73, Roelof, pa0rdt The following section of this message contains a file attachment prepared
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00044.html (10,786 bytes)

327. Re: LF: VO1NA (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Mon, 05 Nov 2018 21:51:00 +0100
Hello Joe, Propagation collapsed almost completely and only a faint trace came up. Not a chance for aural copy, I'm afraid! 73, Roelof, pa0rdt
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00063.html (10,064 bytes)

328. Re: LF: Re: Oscar LU1DOW - Amazing results in MF (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Tue, 06 Nov 2018 14:52:50 +0100
Hello Rik, Solar disturbances like the last one, almost comepletely wipe out DX propagation from the north / northwest and at the same time propagation from the south / south-east / southwest improve
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00079.html (9,999 bytes)

329. LF: Carrier at 517.920 kHz (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Thu, 15 Nov 2018 11:47:10 +0100
Hello all, Maybe someone on this list can help. Since a few weeks a carrier appeared on about 517.920 kHz. This is the lower shift frequency of the RTTY NAVTEX signals transmitting on 518 kHz. A list
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-11/msg00307.html (10,408 bytes)

330. Re: LF: MF WSPR2 (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Sun, 23 Dec 2018 11:34:49 +0100
Hello Albert, Clemens, I can confirm excellent propagation from the Far East on NAVTEX 518 kHz. Last night, I heard for the first time NAVTEX Sanya, 9489 km, from China and below is an excellent deco
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-12/msg00401.html (11,599 bytes)

331. Re: LF: VU2BGS (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Wed, 26 Dec 2018 22:38:34 +0100
Hello Kumar, I have bought ferrite from China at low cost, both sales and shipping. This discussion has eluded me. What are you looking for, I might be able to help. Best regards, Roelof Bakker, pa0r
/rsgb_lf_group-archives/html/rsgb_lf_group/2018-12/msg00474.html (8,791 bytes)

332. Re: R: LF: MF WSPR (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Tue, 05 Feb 2019 12:35:03 +0100
Hello Marco, Your observations agree with what I found in regard to reception of T/A NDB's. Except for Puerto Rico, reception is very poor and northern Canada has been absent as well. On NAVTEX 518 k
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-02/msg00045.html (8,167 bytes)

333. Re: LF: Re: LF propagation (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Mon, 17 Jun 2013 22:07:24 +0200
Hello Alan, I recollect over long periods the best times at 136kHz were either just after sunset, or just before dawn<<< Talking about "just after sunset, or just before dawn" is not very precise as
/rsgb_lf_group-archives/html/rsgb_lf_group/2013-06/msg00212.html (9,771 bytes)

334. LF: GI4DPE, G3XVL, G3DPN (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Tue, 25 Sep 2007 22:39:53 +0100
Hello Finbar, etc. Just listened to your QSO with G3XVL and now copying G3XVL and GI3PDN. There is some very fast QSB on all signals. GI3PDN is peaking 30 dB over my noise floor and G3XVL is even a f
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-09/msg00180.html (9,629 bytes)

335. LF: GM4ISM & G3DPN (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Tue, 25 Sep 2007 23:15:16 +0100
Hello all, I am very pleased to report aural copy of my first ever heard Scottish station on 500 kHz. GM4ISM was 20 dB over my noise floor in JO11tm. Heard on a SPM-30 and the world's smallest LF ant
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-09/msg00240.html (9,557 bytes)

336. LF: Re: Thanks for the help Chris, Graham and Wolfgang (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Tue, 23 Oct 2007 22:58:21 +0100
Hello Paul, I did see your posting a little late. There is also a JRC NRD-91 in the shack here. A good performer at LF, once you have engaged the BC-band reject. On QRSS I do it the same as Wolfgang
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-10/msg00164.html (12,068 bytes)

337. LF: QSO Etiquette (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Wed, 21 Nov 2007 21:18:50 +0100
Hello all, I have followed the discussion on crossband QSO's today. A few minutes ago I had a crossband QSO with G3KEV. Whilst calling him it dawned upon me that there is a very simple solution to th
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00006.html (9,689 bytes)

338. Re: LF: MF CONDX (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Fri, 16 Nov 2007 17:11:27 +0100
Hello John, There was also an evening opening in the lower NDB band for Canadian NDB's. This is a rare event for sure. Often conditions are taking a dip at this time of the year. This is also called
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00015.html (9,130 bytes)

339. LF: Re: 503.95 "WC" (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Wed, 14 Nov 2007 15:56:21 +0100
Hello John, This station has also been logged on November 11 by Kary Syrjanen from Finland. Most likely a NDB. Did you write up the cycle time? 73, Roelof, pa0rdt -- Mijn Postvak In wordt beschermd d
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00046.html (9,329 bytes)

340. Re: LF: Antenna question (score: 1)
Author: "Roelof Bakker" <[email protected]>
Date: Thu, 29 Nov 2007 16:45:54 +0100
Hello Joe, Why not use one of the fence wires? I have had excellent results doing so. 73, Roelof Bakker, pa0rdt -- Mijn Postvak In wordt beschermd door SPAMfighter. 541 spam-mails zijn er tot op hede
/rsgb_lf_group-archives/html/rsgb_lf_group/2007-11/msg00165.html (9,621 bytes)


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