arnie_dxer, 3 months ago to random Polish

558.0792 kHz: IRIB Radio Iran's extensive synchronuous network is no longer really that synchronuous, as one of the 22 transmitters listed for this frequency has slipped almost 80 Hz off 😝

Obviously, with such a large network, it's hardly even possible to tell which of the 22 units is the culprit... #mediumwave #mwdx #OddballCarrierOfTheDay

List of IRIB Radio Iran transmitters operating on 558 kHz mediumwave, taken from mwlist.org. The listings include transmitter locations, QTH locators, distances & bearings from my QTH in NE Poland, as well as notes for each transmitter as almost all have been moved here from all across the MW dial 6 years ago. 14 of the 22 transmitters are run at 100kW or more, including 2x 600kW, 1x 500kW and 2x 400kW units.
Map of IRIB Radio Iran transmitters operating on 558 kHz, courtesy fmscan.org. 10 of them are stretched across the northern portions of the country, with further 10 grouped in a cluster covering C & SW Iran, and one transmitter each in the East (Birjand) and South-East (Iranshahr).

arnie_dxer, 3 months ago to random Polish

1350 kHz: two things from Feb 18.

First, a carrier just slightly below 1350, at 1349.9958 (or 9?), signing-off @ 1605:23*z. Could be China, but might also be... JOER, as it was a Sunday, and Japanese commercial stations tend to take maintenance breaks on Sundays, signing-off @ various times, 1500z (24:00 JST) at the earliest.

Second, 1350.0768 - most likely Thailand, Phon Neung Ror. Or. in Bangkok.

#mediumwave #mwdx #OddballCarrierOfTheDay

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arnie_dxer, 3 months ago to random Polish

A new #OddballCarrierOfTheDay?

864.25 kHz or so, too weak for audio. MWLIST provides no hints.

But nothing in Joensuu🇫🇮, Hsinchu🇹🇼, Chongqing🇨🇳, Dimapur🇮🇳, Oita🇯🇵...

Therefore I conclude it must be local to me, or even my laptop.

arnie_dxer, 3 months ago to random Polish

#OddballCarrierOfTheDay, actually from yesterday, Feb 18 2024. I'm in a process of reviewing an IQ file from late evening of that day, and I see condx to Asia had been... awesome 👀 👀

Am currently on 810, listening to a mix of Akashvani Rajkot 🇮🇳, IRIB R.Lorestan 🇮🇷, sometimes SBA Holy Quran 🇸🇦... and hoping for AFN Yokota 🇯🇵

... but not yet. Instead, a het, measured 809.7944. Matching KCBS Kaesong🇰🇵, even though it's listed as 1kW??????????????? 😨😨😨😨😨😨😨😨😨 #mediumwave #mwdx

arnie_dxer, 3 months ago to random Polish

1188 kHz: Asian propagation is so good tonight that I was able to see - and hear? the Yanbian Wobbly Rumbler #jamming HLKX FEBC. The view was pretty much unobstructed by stronger IRIB Radio Payam.

Even managed to trace the Rumbler's switch-off @ 2007:03*z, and its QSY to 1205.961 - now w/out rumbling, although there's another Chinese Rumbler on 1206.0! - at *2008:51z.

#mediumwave #mwdx #ChineseRumblers #OddballCarrierOfTheDay

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arnie_dxer, 4 months ago to shortwave Polish

From idk, 1450z or so...

Actually... why would China be #jamming FEBC? I'm sure their #shortwave frequencies (9275 & 9345 kHz currently) from Philippines carry very similar programming, and yet it's NOT jammed 🤨 #mediumwave #mwdx #ChineseRumblers #OddballCarrierOfTheDay #KiwiSDR

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arnie_dxer, 4 months ago (edited 4 months ago) to random Polish

Recently, a #IRCA (International Radio Club of America) group, which discusses #MWDX, has been hot about a phenomenon of Chinese #mediumwave #AMradio #jamming... or a strange defect of some 🇨🇳 MW transmitters... or both 🤔

Namely, Rumblers.

https://groups.io/g/IRCA/topic/a_particularly_good_morning/103889766

https://groups.io/g/IRCA/topic/hlaz_1566_how_strong_is_it/104026855

https://groups.io/g/IRCA/topic/asian_rumbler_sidebands/104114640

Screenshots from a Masset🇨🇦 #KiwiSDR linked in one of the threads. #OddballCarrierOfTheDay

arnie_dxer, 4 months ago to random Polish

1503 kHz: weak wobbly carrier, presumed from China 🇨🇳, seen around 1500z today here in NE Poland. I've seen the same thing - and even heard the audio - some 5-6 years back on a Tokyo area KiwiSDR, as "whisperized" instrumental music battling with JOUK... impressive it's been left out like this for so many years 🥴 #mediumwave #mwdx #OddballCarrierOfTheDay

arnie_dxer, 4 months ago to random Polish

755.9455 kHz: IRIB Radio Jahanbin 🇮🇷 went well off-frequency, causing a bad het against much stronger Romania. Been much closer to the fundamental, up until recently... #mediumwave #mwdx #OddballCarrierOfTheDay

arnie_dxer, 4 months ago to random Polish

873 kHz: multiple carriers, but two as far as 40-50 Hz below o.O may try to ID them later. #mediumwave #mwdx #OddballCarrierOfTheDay