1
Прием на длинных волнах / Re: Сегодня в эфире
« : 04 Ноябрь 2025, 17:14:59 »
Apparently there was a QSO between R2BM (decoded here) and R4YM (not seen here).
Форум радиолюбителей ДВ
Форум радиолюбителей о радиосвязи на длинных волнах
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Длинноволновики всех стран объединяйтесь!
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2
Прием на длинных волнах / Re: Сегодня в эфире
« : 04 Ноябрь 2025, 13:39:11 »
R2BM now calling in FST4.
73, Markus (DF6NM)
73, Markus (DF6NM)
3
Прием на длинных волнах / Re: Сегодня в эфире
« : 27 Октябрь 2025, 15:26:26 »Alexander, what is this "mountain" at 105-115 kHz?Loran / Chayka navigation system around 100 kHz.
4
Прием на длинных волнах / Re: Сегодня в эфире
« : 14 Сентябрь 2025, 02:05:05 »
Tonight, RN3AUS appeared four times at DL0AO, in DFCW, Opera-DS, FW-15, and DFCW again.
date time call distance frequency bandwidth snr correlation
2025-09-13 22:01:44 RN3AUS 1790km 137533.041Hz 42mHz -56.7dBOp 96% 15.7dB
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az Mode
2025-09-13 22:15 RN3AUS 0.137533 -39 0 KO85fn 0.05 DL0AO JN59vk 1791 258 F-900/W-15
Well done, Alex!
73, Markus (DF6NM)
date time call distance frequency bandwidth snr correlation
2025-09-13 22:01:44 RN3AUS 1790km 137533.041Hz 42mHz -56.7dBOp 96% 15.7dB
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az Mode
2025-09-13 22:15 RN3AUS 0.137533 -39 0 KO85fn 0.05 DL0AO JN59vk 1791 258 F-900/W-15
Well done, Alex!
73, Markus (DF6NM)
6
Прием на длинных волнах / Re: Сегодня в эфире
« : 13 Август 2025, 00:44:56 »
Caught in the "birdhouse":
2025-08-12 21:15 DF6NM 0.137510 -34 0 JN59nj 0.2 RN3AUS/RX KO85ha 1834 60 F-900/W-15
73, Markus
2025-08-12 21:15 DF6NM 0.137510 -34 0 JN59nj 0.2 RN3AUS/RX KO85ha 1834 60 F-900/W-15
73, Markus
7
Прием на длинных волнах / Re: Сегодня в эфире
« : 22 Июнь 2025, 19:39:28 »
I had actually tried to reach your birdhouse grabber on 137778 Hz, but it was the day before (Jun 20), and without success.
73, Markus
73, Markus
8
Прием на длинных волнах / Re: Сегодня в эфире
« : 13 Июнь 2025, 00:49:44 »
Tonight, both DL0AO and DF6NM received two FW15-traces, starting 20:00 and 20:30, obviously from RA6A. Strangely, the decoder displayed the correct locator, power etc, but istead of the callsign only "00" (zero zero):
250612 2000 0 -38 0.4 0.137542 00 KN96 20 0 15
250612 2030 0 -27 -0.1 0.137542 00 KN96 20 0 15
WSPRnet did not report these two spots.
73, Markus
250612 2000 0 -38 0.4 0.137542 00 KN96 20 0 15
250612 2030 0 -27 -0.1 0.137542 00 KN96 20 0 15
WSPRnet did not report these two spots.
73, Markus
9
Прием на длинных волнах / Re: Сегодня в эфире
« : 11 Июнь 2025, 12:11:41 »
Thank you Alex for the explanation! You might consider adding a second mixer for the quadrature signal (e.g. a Tayloe switching mixer). The 90° phase shift for the LO can be derived digitally in the last divider stage. SpecLab can process IQ input directly, so you don't have to make an analog audio phase-network, but you will need a soundcard with stereo input.
73, Markus
73, Markus
10
Прием на длинных волнах / Re: Сегодня в эфире
« : 11 Июнь 2025, 00:57:14 »
Hi Alex RN3AUS,
I looked on your nice new "birdhouse" grabber, and listened to one of the hourly wav recordings. Interestingly, DCF39 is on 1850 Hz, and HGA on 1550 Hz with inverted FSK. It looks like you are using an IQ-receiver, centered on 136.98 kHz? Also the frequency scale of the Eu-slot around 136.173 kHz is upside down. If you want, you can invert it by ticking the "LSB mirror" option in Spectrum display settings - part 2.
I hope that I will be able to leave a trace one day.
73, Markus
I looked on your nice new "birdhouse" grabber, and listened to one of the hourly wav recordings. Interestingly, DCF39 is on 1850 Hz, and HGA on 1550 Hz with inverted FSK. It looks like you are using an IQ-receiver, centered on 136.98 kHz? Also the frequency scale of the Eu-slot around 136.173 kHz is upside down. If you want, you can invert it by ticking the "LSB mirror" option in Spectrum display settings - part 2.
I hope that I will be able to leave a trace one day.
73, Markus
11
Прием на длинных волнах / Re: Сегодня в эфире
« : 10 Июнь 2025, 13:00:22 »
Last night between 19:26 an 2:50 UT, many European stations were spotted by "AI6VN" on 630 m, some with positive SNR reports. I think that the receiver must have been somewhere in Europe, and the posted "CM88mc" locator is an error.
73, Markus (DF6NM)
73, Markus (DF6NM)
12
Прием на длинных волнах / Re: Сегодня в эфире
« : 06 Май 2025, 02:57:38 »
Clear signals on DL0AO.
73, Markus
73, Markus
13
Прием на длинных волнах / Re: Сегодня в эфире
« : 08 Апрель 2025, 21:32:28 »The bucket is ruined,Oh no. I feel with you, things like that usually happen to me. If you want, you could send a photo to Paul N1BUG for the "Hall of Flame". Good luck with the repair work!
73, Markus
14
Прием на длинных волнах / Re: Сегодня в эфире
« : 23 Март 2025, 17:24:48 »
New station R5AN:
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az Mode
2025-03-23 12:15 R5AN 0.137546 -38 0 KO86fe 0.01 DL0AO JN59vk 1807 256 F-900/W-15
Timestamp Call MHz SNR Drift Grid Pwr Reporter RGrid km az Mode
2025-03-23 12:15 R5AN 0.137546 -38 0 KO86fe 0.01 DL0AO JN59vk 1807 256 F-900/W-15
15
Прием на длинных волнах / Re: Сегодня в эфире
« : 23 Март 2025, 12:32:01 »
Thanks Sergey for explanation, and congratulations on the good signal!
