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301. Re: LF: MF monitor in Mexico (score: 1)
Author: DK7FC <[email protected]>
Date: Sun, 29 Nov 2015 03:54:18 +0100
Hi Luis, Sounds interesting. I think that LF is permitted in CX. I have been in contact with someone from there a few years ago. But i never saw him at YV7MAE nor saw RX reports from him. Probably he
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-11/msg00662.html (11,133 bytes)

302. Re: LF: WD2XES 137.779 (score: 1)
Author: DK7FC <[email protected]>
Date: Sun, 29 Nov 2015 04:11:10 +0100
Hi John, I also got some traces of your signal arround 0 UTC. https://129.206.22.210:8001/f/6aa1c6891d/ (trying this kind of dropbox alternative now on a Raspberry Pi) 73, STefan Am 27.11.2015 22:44,
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-11/msg00663.html (9,088 bytes)

303. LF: Dropbox alternatives, private file hosting!? (score: 1)
Author: DK7FC <[email protected]>
Date: Sun, 29 Nov 2015 14:42:42 +0100
Hi all, We're sharing a lot of stuff here on the reflector. Quite often and since some years, dropbox is used to do the job. Now there are a few reasons why one can decide to leave dropbox and find a
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-11/msg00678.html (10,835 bytes)

304. Re: LF: More EbNaut 137.777 (score: 1)
Author: DK7FC <[email protected]>
Date: Mon, 30 Nov 2015 21:55:00 +0100
Hello Joe, Yes, with QRO it's possible! 73, Stefan Am 30.11.2015 20:55, schrieb [email protected]: Thankyou again Markus, Paul and Andy, TX on in 5 mins. Wonder if there is a chance of a VK7 reception if
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-11/msg00719.html (10,043 bytes)

305. Re: LF: Beware damage from active antennas (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 01 Dec 2015 14:31:47 +0100
Am 01.12.2015 11:39, schrieb LineOne: I don't rate diodes, even faster ones than the 1N914/4148, for overload protection, they do make good mixers to receive broadcast signals off Long Wave. [...] Hi
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00008.html (9,571 bytes)

306. Re: LF: WSPR OBSERVATIONS (score: 1)
Author: DK7FC <[email protected]>
Date: Fri, 04 Dec 2015 18:07:14 +0100
Am 04.12.2015 17:53, schrieb mal hamilton: [...]   When I get time I will QRO but need to build an intermediate RF amp between TCVR and main MF amp Which input signal does your main MF amp need? Rect
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00072.html (9,118 bytes)

307. Re: LF: Re: WSPR OBSERVATIONS (score: 1)
Author: DK7FC <[email protected]>
Date: Fri, 04 Dec 2015 21:39:53 +0100
R Mal, Then i would try the TC4426, if you have them at home. And a ferrite transformer to rise the voltage level a bit and to decouple TX from PA. https://129.206.22.210:8001/f/80bc50b01d/ for examp
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00080.html (12,082 bytes)

308. Re: LF: Re: WSPR OBSERVATIONS (score: 1)
Author: DK7FC <[email protected]>
Date: Fri, 04 Dec 2015 21:44:07 +0100
PS: Watch the duty cycle of the output signal. I don't know how accurate it has to be for that PA. Maybe you'll need another amp stage in front of the 4426 and anti-serial Z-diodes. Or an op amp stag
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00081.html (12,648 bytes)

309. LF: FR5ZX MF WSPR again (score: 1)
Author: DK7FC <[email protected]>
Date: Sat, 05 Dec 2015 00:57:00 +0100
Hi all, After some weeks, the path seems to be open again. I'm now checking it with 50% TX ratio and a bit higher power. So far, 3 spots: Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az  2
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00095.html (13,840 bytes)

310. Re: LF: WSPR MF RECEPTION (score: 1)
Author: DK7FC <[email protected]>
Date: Sat, 05 Dec 2015 19:49:46 +0100
Am 05.12.2015 19:26, schrieb mal hamilton: [...]yet no one beyond M0LMH can receive/decode my signal. Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az  2015-12-05 00:04   G3KEV   0.475707 
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00113.html (10,404 bytes)

311. LF: More and more and more and more... (score: 1)
Author: DK7FC <[email protected]>
Date: Sun, 06 Dec 2015 10:43:17 +0100
Hi all, The lower frequencies become more and more popular it seems. At least on MF WSPR i've got reports by 75 stations during the last 24 hours (compare that to Opera! ;-) ), as many as never befor
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00125.html (49,875 bytes)

312. Re: LF: Is this frequency locking enough for EbNaut? [ISDR kits] (score: 1)
Author: DK7FC <[email protected]>
Date: Sun, 06 Dec 2015 20:52:14 +0100
Hi Dave, Yes, we notice that. And we notice that is is operated by Yas/JA8SCD who is a member of this group since years! And here to notice that he even received me in Tokyo, using this receiver, see
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00144.html (12,710 bytes)

313. Re: LF: xpq 137.775 dfcw90 (score: 1)
Author: DK7FC <[email protected]>
Date: Mon, 07 Dec 2015 23:50:05 +0100
Hi Laurence, I checked the archive of TA60 captures from last night. No clear trace of a DFCW90 signal here. Anyway, thanks for the transmission! I should come back to LF some day... 73, Stefan Am 06
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00174.html (9,286 bytes)

314. Re: LF: Re: Tnx Stefan (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 08 Dec 2015 12:25:19 +0100
Hello Mike, Thanks for watching and reports. I think you are my best DX to the west so far. Do you use a directional rx antenna beaming to the east? 73, Stefan Am 08.12.2015 08:13, schrieb Michael Sa
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00186.html (11,492 bytes)

315. Re: LF: 8270 Hz traces again! AK (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 08 Dec 2015 16:41:10 +0100
Hi Uwe, My active VLF antenna inside a plastic tube was hanging down since a few days, see the spectrograms. Now i repaired that and the signal levels are back to their normal level. You are coming n
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00189.html (13,956 bytes)

316. Re: LF: Variometer question (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 08 Dec 2015 18:35:37 +0100
Hi Chris, It should be placed near the motor. But it doesn't matter to much since the motor is running for a few seconds only when doing QSY. Is the system already built up and working? 73, Stefan Am
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00192.html (9,453 bytes)

317. Re: LF: VO1NA - carrier (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 08 Dec 2015 23:17:34 +0100
Edgar, the animated gif is a very good idea! :-) 73, Stefan Am 08.12.2015 21:54, schrieb edgar: Hi Joe, Result from last night. https://dl.dropboxusercontent.com/u/101251787/VO1NA/VO1NA.gif Some adju
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00202.html (10,733 bytes)

318. LF: VLF in VK7? (score: 1)
Author: DK7FC <[email protected]>
Date: Tue, 08 Dec 2015 23:22:13 +0100
Hi Edgar, Maybe i forgot it but, did you ever run experiments on VLF in a clean environment? Would be interesting to get an impression about SNR of DHO-38 for example... 73, Stefan Am 08.12.2015 22:5
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00203.html (10,944 bytes)

319. Re: LF: VLF in VK7? (score: 1)
Author: DK7FC <[email protected]>
Date: Wed, 09 Dec 2015 00:53:34 +0100
Hi Edgar, What type of antenna are you using for VLF? Could you generate a slower wideband window showing 0...24 kHz, like here: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_VLF_Grabber.html 7
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00207.html (10,908 bytes)

320. Re: LF: EA5DOM back to MF, but QRP at the moment (score: 1)
Author: DK7FC <[email protected]>
Date: Thu, 10 Dec 2015 11:22:59 +0100
Or simply 80 W or 80000 mW. Forget the "," :-) In Germany, "," = "." and "." = ",", e.g. 12,7 V not 12.7 V. Maybe it is the same in Spain? 73, Stefan Am 09.12.2015 23:47, schrieb Graham: That's just
/rsgb_lf_group-archives/html/rsgb_lf_group/2015-12/msg00239.html (11,495 bytes)


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