|Subject:||Re: LF: 1476 kHz AM|
|From:||Markus Vester <[email protected]>|
|Date:||Sat, 10 Nov 2018 23:11:01 +0000 (UTC)|
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yes a GPS 1 Hz comb would surely help. Iran is currently moving between +259.2 and 259.5 Hz, and might be useful to identify the right 1 Hz harmonic.
The "swinger" stopped oscillating after 18:20, and after some erratic drift seems to have more or less settled around +0.3 Hz now. I would be surprised if it really came from East Asia as it would probably have faded out earlier than 4 UT. Since 21:50, another weak one came up around -0.02 Hz.
Ralph is still steady at +0.411 Hz, plus minus a mHz.
Von: Marcus PY3CRX PY2PLL <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Sa, 10. Nov. 2018 23:42
Betreff: Re: LF: 1476 kHz AM
The thermostat swinger is "strong" in a Vietnam KiWi SDR
Propagation not ok tonight, no signal from this "reference" here now ...
I have 3 carriers detected, all stable and close to center freq (.5Hz differece) so hard to say who's who.
I don't have a GPS reference to verify my own calibration. May be some comb generator from a pps helps.
Em 10/11/2018 19:40, Markus Vester escreveu:
Thanks Laurence - another long shot ;-) How accurate is your frequency readout? Seems like MW broadcasters are hardly ever exactly on frequency.
The "thermostat swinger" came in up about 1 Hz low in the evening
and now appears to have settled to a more irregular pattern between 0 and + 0.4 Hz above nominal. A local screenshot with hourly update is here:
Von: Laurence KL7 L <[email protected]>
An: [email protected] <[email protected]>
Verschickt: Sa, 10. Nov. 2018 21:49
Betreff: Re: LF: 1476 kHz AM
Morning from Alaska - I was a little late in shoving the North bound beam over the pole and taking a look at 1476kHz - We have numerous co-channel stations on Oz, China, Indonesia and Russia and I tried to reduce them using the K9AY but I dont think Im seeing anything yet.
It wasnt a particularly good night . Ill take another look at sun down in a few hours. Notice the abrupt turn off for one or more transmitters, and someone LF of 1476 appears to have a lot of recurring on/off/wobble about... I also have a 1Kw station within a mile on 1430 which is putting out some low freq rumblings which isnt helping.
It does Happen occasionally as Ive heard Moray Firth and North Sound radios on MW from this side.
73 Laurence KL7L KL1X
Hi Lubos, Dave, Chris, great news! Thank you so much for listening and reporting.
Chris, I'm pretty sure that Ralph will love to read about your receiver!
Von meinem Samsung Gerät gesendet.
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