AJS37 Viggen: Is The U22/A Jammer Effective Against SAMs? | DCS WORLD

[@PaletoB]

Ok so I tested this my self, using @RED15 tip to look on the timer. The U22/A pod is actually activated in mode B (U22 pod and U22/A uses different settings for modes.), with G,H,J being different sensitivity's and K automatic sens. With pod turned to 0 launch was 1;01-1;02 in my mission, best result was with it in B and K, 1;08-1;10. So 7-8 seconds difference :/ "Edit" With the SA-6 and SA-11 it's a lot more noticeable, 2:17 vs 2:56, about 35km vs 25km firing distance at 800km/h IAS :) So maybe the S-300s radars are to advanced. Speed: 800 km/h IAS, Altitude 3000m, flying north towards Novorossiysk, starts at 70km. U22/A. Using the preset templates for the SAM's SA-2 No Jamming: 1:49. With Jamming: 2:15 SA-3 No Jamming: 3:17. With Jamming: 3:20 SA-6 No Jamming: 2:10. With Jamming: 2:48 SA-10 No Jamming: 1:10. With Jamming: 1:08 SA-11 No Jamming: 2:17. With Jamming: 2:56 The Results did vary 1-3 seconds some times but this is the average of 3 runs. Of course it might differ with speed, altitude and all other factors but now I know more then I did before. :O

[@AdurianJ]

The SA10 uses a planar array PESA radar for its fire control and tracking. The U22 would probably struggle against such a system given what we kniw of its jamming modes. After all its at its base a 1970s ECM pod that has been upgraded over the years. And against the latest radars it operated mainly in the search phase with PRF prediction. With a combined radar it will run into problems

[@AdurianJ]

That SA-3 should have serious trouble locking up a Viggen even if the search radar is outside the frequency envelope of the jammer.

[@PaletoB]

@@AdurianJ Yea that make sens, Also realistically enough the skill level of the unit only seams to effect the Jammed runs. The SA-10 goes down to 1:03 on excellent but the non Jammed run is still 1:01.

[@PaletoB]

Altitude also changes the difference in time. at 6000m the SA-10 locks you quicker but the difference is much bigger with Jamming. Same at lower altitudes like 50m. Off course Speed might change and if you set 800 in the editor the plane will try to speed up because of the difference of Indicated and Ground speed.

[@Maeyanie]

The first thing I thought when watching this was "The S-300 is pretty new, it might be immune to that pod, against something old like an SA-2 it might work better." And from your numbers, apparently it does. Good to know, thanks for posting those.

[@Red15]

It was easier to look at the clock, all launches happened at 13:13:53 so no difference there. Would be interesting to see these tests with other planes/jammers.

[@pansarbat]

From the top of my head the jammer frequencies needs to be set on the ground in mission planning. I haven't been able to play dcs myself, due to a to old computer, but I think from the litterature I have on the viggen you have to plan out which frequencies that you want to distrupt before leaving for the mission.

[@AdurianJ]

The jamming programmes are selected on the ground. With the U22/A the option to select between two of the modes in flight was added. There is also a peace setting in the cockpit for the frequency bands. Which is to keep it from jamming civilians in peacetime

[@boddan8384]

btw the word "Automatisk" in "Automatisk Fartkontroll" is pronounced as it's spelled, so no sch-sound at the end. So it basically ends with a sk-sound, as in "risk".

[@ClintThrust-e8r]

Insert obligatory viggen fart joke

[@phoenixpereira3716]

...cause you are using it wrong, its a jammer that makes you more visible and disrupts the distance from the radar to the jamming aircraft (you), not a jammer that makes you invisible to radar. the Jammer was used only in a 3+ ship of Viggens and spaced each other out about 3-5 miles and the first leading aircraft puts his on first (making the other 2 invisible since they are directly be hind the leading) after 2 mins once engaged the 2nd aircraft turns his on and the first one turns his off making the radar losing track of the target and trashing the missile straight away. and same process for the third aircraft. This also works in DCS but this is harder to master then mid air refuelling with your eye's close

[@Stahlwollvieh]

Well that's generally what jammers do, making you more visible while also making it hard to get a proper lock. If you're using a jammer on any aircraft thinking you're going invisible you're in for a nasty surprise. But if this jammer was specifically designed to make SAMs fire prematurely it also doesn't seem to work, otherwise they should've fired from even *further* away, since clearly they could track him regardless at 26nm regardless. Turning of the jammer would almost certainly not have trashed the missile at this point. I get the idea you are proposing, but the evidence doesn't quite seem to support it. Do you have anything to show that might change something about that?

[@phoenixpereira3716]

@@Stahlwollvieh there is a certain mode and ill get back to since i have not flown the viggen for a long time now but ill do research in the manual which modes where used since there are i think over 12 different positions on the selector

[@thegrizz9994]

@@phoenixpereira3716 I'm sure there's more to this than flying straight at the SAM.. TACTICS

[@AdurianJ]

No normally only 1 in 4 aircraft carried the ECM pod and they attacked the target from a different angle than the rest of the flight so as to confuse it. Viggens dont string out their attack they come all at once and dissapear

[@lenn55]

There are modern jammers that can hide or not reveal your true location to a certain extent. I read about a case when the first Swedish Gripens went to Red Flag and using their new ECM pod that nobody had gone up against made a flight of Gripens near invisible to the radars on the Red F-16s. They must have been using a new technique or something like DRFM jammer which are very effective.

[@PaletoB]

Could you try the same against another player, maybe in a aircraft of the same timframe with radar locking? To get a point of view from the receiving end.

[@grimreapers]

Sure but I understand that the Viggen jammer is only for air to ground?

[@PaletoB]

@@grimreapers Yea, thats my understanding as Well.

[@AdurianJ]

@@PaletoB I don't see why it shouldn't be able to jam some air to air radars other than it directivity and the fact that it's jamming modes don't seem to be optimized against aircraft radars. But it still covers the X band which is where fighter radars live and breathe. Roughly contemporary to the U22/A Sweden developed the U95 jammer which was optimized for use against fighters but the pods have come common features. This is all really secret stuff but i suspect the U22/A would make target acquisition a bit more difficult where the U95 would prevent a lock. (The U95 was developed from the Erijammer pod and the U22/A got some hardware and features from that pod put into it as well as the shrinking of electronics made the space available.)

[@MorganMR2]

MiG-21 and SPS-141 next? Though I am pretty sure ECM does diddly squat in DCS besides frustrate TWS users at ranges further than they can get a launch cue anyway

[@possiblyadickhead6653]

But some pls explain the disadvantages to tws to eagle dynamics

[@FuriouslyFurious]

Good video. Thanks!

[@lenn55]

have the developers of this DCS plane commented on whether the jammer is modeled? it seems that it's not given your tests.

[@jowenjv4463]

Maybe I'm wrong, but it's not a Heatblur related subject. ECM are made by ED. Once again, I can be wrong.

[@michaeldwyer3466]

Cap, you need to test this jammer vs a SAM from the same era, not a modern one.

[@grimreapers]

Yup it's on my to to list

[@arvidg8547]

Well that's disappointing

[@manuelgearbox7309]

The MiG-21 jammer is also useless

[@coltenbrower5035]

First

[@wolfedan3]

I hate the instructional videos.

[@robertcurtis1191]

they told me they are not very fond of you either

[@wolfedan3]

@@robertcurtis1191 I don't have a problem with that.