Iran, Hormuz, shipping - lots of concern and coverage - RNTF Image: Jeremy Bennington, Spirent What's new: Concern and press coverage about GNSS interference in the Persian Gulf and Strait of Hormuz continues to

#GPS jamming in the Strait of Hormuz is escalating — shipping near-halted, global economy feeling it, and reports Iran may be guiding weapons with an "unjammable" #BeiDou variant.
🔗 rntfnd.org/2026/03/12/i...
#GNSS #Jamming #China

Surge in GPS interference around Strait of Hormuz increases shipping risks More than 1,100 vessels have been hit by GPS interference across the Middle East Gulf since the start of the conflict, according to maritime firm Windward. Experts warn these attacks pose severe risks...

As well as the obvious implications to navigation both at sea and in the air, this is a timely reminder not to rely only on satellite-based signals for network time synchronisation.

#GPS #GNSS #jamming #NTP #PTP #time

www.france24.com/en/middle-ea...

Russian submarines and GPS jamming: The new reality for Baltic cruisers - RNTF Image: Shutterstock What's new: A maritime report and perspective we don't usually hear from - the yachting world. Why it's important: This article

Russian naval activity near Kaliningrad is bringing #GPS #jamming directly into the path of civilian sailors — and the Baltic is becoming the new normal for #GNSS disruption.
🔗 link.rntfnd.org/9fx
#PNT #Russia #Maritime

No #jamming tonight against V32 #numberstation to #Iran!

Nothing on 7910 while V32 is loud & clear on 7842 USB

Bubble Jammer vs Radio Farda 7460 (even if 7455 has sth in Korean), while 7470 is unjammed

9515 Farda via WOF massive

5860 Farda KWT, 5885.3 Iran Intl BUL both good

#shortwave #IranWar

Jamming - Bob Marley Ooh, yeah. Well, alright. We're jammin'. I want to jam it with you. We're jammin', jammin'. And I hope you like jammin' too. Ain't no rules, ain't no vow.

Scopri il testo della canzone “Jamming” di Bob Marley
#BobMarley #Jamming

At 1733z, there are still just 2 #jamming txs in use from #Iran, on 7495 against Radio Farda, and 15750.3 against Iran International.

Will they still divert one of them to the V32 #numberstation on 7910 USB after 1800z, even though... it's no longer on air? 🤣

#shortwave #IranWar #WARINIRAN

UPDATE @ 1435z, w/ many more freqs heard... and now I do spot 2 Iranian Bubble Jammers on 7470 & 15750.3 kHz (note the Bubble Jammers are always off-freq, but Iran Intl is so far off 15750 too that they're only slightly beating!)

Many more freqs free of #jamming #shortwave #Iran #IranWar #WARINIRAN

In addition, when 12110 wasn't active, UTwente users were reporting Iran International on 15750, another new freq!

15750 did have strong Bubble #Jamming also but not for the entire time Iran International was on it; it went off around 1717z

#shortwave #Iran #IranWar #WARINIRAN

At 1744z, look at this!

Radio Farda will likely stay permanently on 7470 via Kuwait, while the other relay nearby via UZB will keep changing freqs to evade #jamming

2h ago, 7470 attracted the Bubble Jammer, 7520 did not

Now, 7470 is NOT jammed, while 7490 is!

#shortwave #Iran #IranWar #WARINIRAN

7520 kHz: another additional Radio Farda freq, and it seems that's the Tashkent one! QRMed by strong CW on 7521 kHz for a moment, off now.

So right now, Radio Farda can be heard on the following freqs (* indicates #jamming):
1395
5860
7470*
7520
11575
13755*

#shortwave #Iran #IranWar #WARINIRAN

11575 kHz: there's a new frequency for Radio Farda, 10kHz audio bandwidth like on // 5860, so likely via #USAGM Kuwait. No #jamming; // 13755 UAE is strongly #jammed, + TDF DRM is on 13760.

QRM on 11575 is from SuperDARN, unrelated. #shortwave #Iran #IranWar #WARINIRAN

Attacks on GPS Spike Amid US and Israeli War on Iran - Wired - RNTF Image: Shutterstock What's new: Not surprisingly, there has been a huge uptick in GPS jamming by Iran since the U.S. and Israel began attacks. Why it's

Iran's #GPS jamming has disrupted 1100+ ships in the Gulf since Feb 28 — helping bring Strait of Hormuz traffic to a near halt and driving up oil prices worldwide.
🔗 rntfnd.org/2026/03/03/a...
#PNT #Jamming #Iran #CriticalInfrastructure

Three #jammer's are #jamming @iraninternational.bsky.social on 12100 kHz at the moment. One of them joined 3 minutes ago, likely a Bubble Jammer. One of the two other jammers is a 1kHz test tone jammer, the other is certainly a Bubble Jammer. #shortwave #Iran #IranWar #WARINIRAN

But no #jamming so far on Voice of Trump, at least on 7590... #shortwave #Iran #IranWar #WARINIRAN

At the moment on 12110 kHz there are two #Iran jammers: one, weaker, to the lower side, sends nothing but 1kHz tone. The stronger one, over 200Hz above 12110, is a Bubble Jammer. The latter is a returnee as Bubble Jammers vanished shortly before Iran Intl QSYed to 12120.

#shortwave #jamming

Not on 17895, but on 17900 kHz - there is @iraninternational.bsky.social this morning via Kostinbrod🇧🇬. No #jamming!

And also on 12110 kHz - and that's where all Bubble Jammers have gone 😈 3 of them, at different offsets. Not to be confused w/ 50Hz & 100Hz hum.

#shortwave #Iran #IranWar #WARINIRAN

GPS jamming and spoofing is a threat airlines deal with every day The incident that affected the European Commission President Ursula von der Leyen’s plane is not limited to politicians and VIPs.

From September but very relevant now - with the US-Israel-Iran war underway....GPS jamming and spoofing is a threat airlines deal with every day
www.smh.com.au/busin... #iran #gps #jamming #spoofing

Österreichs erster militärischer Satellit präsentiert Erstmals hat das Bundesheer eine Demoversion eines seiner fünf Satelliten präsentiert. Der BEACONSAT-Satellit soll ab Februar 2027 für ein Jahr Störsignale erkennen und analysieren. Wenig später start...

NEU Das .at-Bundesheer hat eine Demoversion von einem seiner 5 Satelliten präsentiert. #BEACONSAT soll Störsignale aus dem #All detektieren + diese analysieren #Österreich #Satellit #Jamming #Flugsicherheit #ESA #Weltraum #Weltall #Technologie #Weltraumtechnologie #Landesverteidigung #Hardware #Tech

Just finished assembling a four-string cigar box guitar with my dad (inspired by blues rockstar Samantha Fish playing one) 😃 🔥 🎸

Now trying it out with Samantha Fish's take on R.L. Burnside's "Shake Em On Down" on this barky wood box! 🔥🎶
#blues #rock #cigarboxguitar #DIY #deltablues #jamming

Radio Farda on 41m has moved from 7460 to 7515 kHz. #Jammer still on 7460 so far. Guess that's the only #jamming transmitter still running on #shortwave from #Iran at this time 🤔 #IranWar #WARINIRAN

Now there's a very interesting cluster of broadcasts targeting #Iran:
5860 Radio Farda via Kuwait
5875 Radio Farda via Woofferton, almost a minute delay!
5885 Iran International via Kostinbrod

No #jamming!

(and 5900 is Kostinbrod too, must be Overcomer Ministry)

#shortwave #WARINIRAN #IranWar

In the meantime (it's 1641z, last update was shortly past 1500z), Radio Farda has moved its Tashkent relay from 7510 to 7490 kHz. One Bubble Jammer followed, but the other remains on 7510 🤨 #shortwave #Iran #IranWar #WARINIRAN #jamming

And I'm hearing Radio Farda indeed on 1395 MW, // 13755, 7510 & 5860, w/ no #jamming, except there's an actual Iranian station on the same freq. #mediumwave #Iran #IranWar #WARINIRAN

And @iraninternational.bsky.social is back to 12110 kHz, as the #jammer was waiting for it to reappear all afternoon long 😆

BUT... 17895 is still on air! Weaker but no #jamming.

#shortwave #Iran #IranWar #WARINIRAN

5860 is also in, much weaker, but no #jamming is seen at present. This via #USAGM, which orphaned Radio Farda a year ago, but finally realised it could be useful to actually support it 😆 #shortwave #Iran #IranWar #WARINIRAN

I don't know at what point, but @iraninternational.bsky.social had moved from 12110 to 12090 kHz, possibly to escape #jamming. So far there's none on the new freq. #shortwave #Iran #IranWar #WARINIRAN

Sure enough, @iraninternational.bsky.social 's 12110 kHz is jammed by #Iran.

The carrier just above the 12110.2 mark is the Bubble Jammer, and I can hear the bubbling and a het in the background.

However, Iran Intl signal from Bulgaria is S9+15dB here💪

#shortwave #jamming #WARINIRAN #IranWar

#GNSS "weather" is already a little "cloudy". To be fair, however, it must be said that interference in GNSS has been evident for days. There will likely be further changes in GNSS accuracy and targeted #jamming attacks. src: gpsjam.org #Iran #Israel

Don't forget #Kaliningrad EW #jamming!