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Total 384 documents matching your query.

361. LF: What's all thos then? (score: 1)
Author: Chris Wilson <[email protected]>
Date: Tue, 2 Apr 2019 10:39:25 +0100
Hello LF'ers Seeing this (false) WSPR2 decode very regularly these last few days, anyone else seeing it? 0648 -25 -3.9 0.137601 0 4HG/E50KOP 7 0716 -24 -2.6 0.137557 0 4HG/E50KOP 7 0748 -24 -3.8 0.13
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-04/msg00004.html (8,502 bytes)

362. Re: LF: What's all thos then? (score: 1)
Author: Chris Wilson <[email protected]>
Date: Thu, 4 Apr 2019 12:29:33 +0100
Hello Markus, Thanks for that, I have recently got a continuing wandering noise on the band, something local I think, maybe they are related. -- Best regards, Chris mailto:[email protected]
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-04/msg00031.html (10,687 bytes)

363. LF: Matching transformer for LF and MF question, ferrite material? (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 14 Apr 2019 12:21:28 +0100
Hello LF'ers I am having a play listening on LF. I have found the variometer alone in my loading coil will resonate my strapped vertical feeder horizontal quad loop antenna, I do not need the main lo
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-04/msg00092.html (10,054 bytes)

364. Re: LF: Matching transformer for LF and MF question, ferrite material? <TYPO> (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 14 Apr 2019 13:03:54 +0100
Hello Chris, I meant to type "having a play listening on *MF*", not LF, sorry. -- Best regards, Chris mailto:[email protected]
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-04/msg00093.html (11,776 bytes)

365. LF: Another impedance matching question. Paul's audio amps. (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 14 Apr 2019 14:37:42 +0100
Hello LF'ers Having collected my audio amp from Paul Nicholson (VERY many thanks Paul, it's an awesome looking beast.... :)) I would appreciate anyone else getting one posting their thoughts and resu
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-04/msg00099.html (8,402 bytes)

366. Re: LF: Another impedance matching question. Paul's audio amps. (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 14 Apr 2019 17:08:48 +0100
Hello DK7FC, I have about 17 acres to play with, mainly woodland but with a 5 acre field and a big front garden. I thought an aerial antenna would be a none starter due to the voltages involved, so I
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-04/msg00103.html (11,123 bytes)

367. Re: LF: Another impedance matching question. Paul's audio amps. (score: 1)
Author: Chris Wilson <[email protected]>
Date: Thu, 9 May 2019 13:42:30 +0100
Hello Stefan, I am now on to building a matching transformer but it seems Buerklin have a minimum order of 60 units! I have found this bigger core at Mouser, could I use that instead please? https://
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00018.html (11,115 bytes)

368. Re: LF: Another impedance matching question. Paul's audio amps. (score: 1)
Author: Chris Wilson <[email protected]>
Date: Thu, 9 May 2019 15:47:49 +0100
Hello Stefan, Thanks, ordered 3, so get free shipping, it was cheaper than ordering 2 and paying shipping :) -- Best regards, Chris mailto:[email protected]
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00022.html (11,825 bytes)

369. Re: LF: Another impedance matching question. Paul's audio amps. (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 12 May 2019 11:45:32 +0100
Hello Stefan, No, not yet, I need to finalise the positions for the ground rods. Can I initially lay insulated stranded but each single core UK 15 Amp mains wires on the ground's surface to the rods?
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00024.html (14,020 bytes)

370. Re: LF: Re: MF amp (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 12 May 2019 12:50:38 +0100
Hello Jay, understood re short probe ground and cap values, thanks. BTW, mail direct to you is still being replied to via Blacksheep! So something is amiss with your mail filtering perhaps? Thanks ag
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00026.html (10,454 bytes)

371. Re: LF: Re: MF amp (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 12 May 2019 18:55:59 +0100
Hello Jay, Just sent an e-mail direct to [email protected] and this is a reply to your Blacksheep post. BTW, with regard to measuring the voltage across the stacked caps to ground on the centre t
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00029.html (12,504 bytes)

372. Re: LF: Re: Test Jay's e-mail (score: 1)
Author: Chris Wilson <[email protected]>
Date: Mon, 13 May 2019 10:46:02 +0100
Hello Alan / Jay, Yes, it appears my GMAIL mail has Blacksheep set as the Reply-To: So mea culpa, quite why it got set as such I am not sure, but I do recall some issues with getting GMAIL working wi
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00032.html (9,759 bytes)

373. Re: LF: LF daylight test close to the north hemisphere solstice (score: 1)
Author: Chris Wilson <[email protected]>
Date: Thu, 30 May 2019 11:28:40 +0100
Hello Luis, thanks for your work and reports, I have turned on the WSPR15 reception and will look out for you, but my friend G6ECH, Stuart, is returning here soon whilst his house undergoes modernisa
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00050.html (10,837 bytes)

374. Re: LF: LF daylight test close to the north hemisphere solstice (score: 1)
Author: Chris Wilson <[email protected]>
Date: Fri, 31 May 2019 17:04:14 +0100
Hello Luis, Plenty of WSPR15 spots here, but for some reason they are not uploading to the reporter map / database, despite restarting WSPR15 2145 -9 0.1 0.137604 0 EA5DOM IM98 30 1015 -18 -0.2 0.137
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-05/msg00051.html (11,563 bytes)

375. LF: MOSFET gate resistors question (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 2 Jun 2019 14:39:29 +0100
Hi all, My pal G6ECH and myself are battling poor drain waveforms in Class D 470 kHz push pull amps. We have two main initial questions. Some circuits show a gate pull down resistor used, some do not
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00001.html (8,974 bytes)

376. LF: HEF 4013 flip flop anomaly (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 2 Jun 2019 15:11:07 +0100
Hi, I thought a separate thread best for this question U3S exciter for MF, taking the X2 frequency output @ circa 950 kHz from the Si5351A CLK0 output pin to a level converter using a SN74AHCT125N bu
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00002.html (9,397 bytes)

377. Re: LF: Re: HEF 4013 flip flop anomaly (score: 1)
Author: Chris Wilson <[email protected]>
Date: Mon, 3 Jun 2019 16:56:40 +0100
Hello Luis, I am at work but will draft a more detailed post later. The new CD74HCT74E flip flop board shows similar horrible traces, so I think you may well be on to something here! Thank you. My do
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00007.html (13,699 bytes)

378. Re: LF: Re: HEF 4013 flip flop anomaly (score: 1)
Author: Chris Wilson <[email protected]>
Date: Wed, 5 Jun 2019 13:23:47 +0100
Hello all, We put the output of the si5351A and the level converter through an attenuator into my SA and things look horrible 9to me, but I am A: Not very good with the SA and B: frightened of blowin
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00017.html (16,884 bytes)

379. Re: LF: LF daylight test close to the north hemisphere solstice (score: 1)
Author: Chris Wilson <[email protected]>
Date: Wed, 19 Jun 2019 14:09:38 +0100
Hello Luis Also listening WSPR15 as much as I am able and until my pal visits again to "borrow" the aerial for MF ;) DL7NN is probably too busy working to keep paying the electric bill, he's been ext
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00041.html (11,286 bytes)

380. Re: LF: First LF trans ecuatorial spots from FR5DH in WSPR2 (score: 1)
Author: Chris Wilson <[email protected]>
Date: Sun, 30 Jun 2019 11:15:26 +0100
Hello Luis, Congratulations to you and Pascal, an excellent result indeed! -- Best regards, Chris mailto:[email protected]
/rsgb_lf_group-archives/html/rsgb_lf_group/2019-06/msg00070.html (10,481 bytes)


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