Anyway, I don't think S-300 would help much even against 4th gen fighters.
“Syria to need up to a dozen S-300 batteries to protect itself – Russian general
Friday, May 31, 2013
Document Type: OSC Summary . . .
Syria needs at least 10 battalions of Russian S-300 air defence missile systems in order to be able fully to protect its territory from possible air attack, former Russian Air Force C-in-C Army General Anatoliy Kornukov told the Russian military news agency Interfax-AVN on 31 May.
“Based on the size of Syria’s territory, they will need 10-12 S-300 battalions (Russian: “divizion”; strictly, the next force level up from a battery, i.e. battalion), which would see to it that the country is protected,” Kornukov said.
“According to him, that kind of potential will make it all but impossible to set up a no-fly zone over Syria,” the report said.
“Each S-300 surface-to-air missile (SAM) system consists of a command post equipped with radar for detection and up to six 5Zh15 SAMs linked up with it,” the report added.
A month to train Syrian crews
It will take up to a month to train Syrian crews to operate the S-300, Kornukov told Interfax-AVN. “Certainly, our specialists will have to train Syrian colleagues if they get these systems. Everything here will depend on the diligence of those to be trained. It will, however, take between two weeks and a month,” Kornukov said.
Asked how long it would take to deploy the S-300 once in Syria, Kornukov said that “everything depends on the site where these systems are to be positioned”. “It will take some time to reach the site, although to deploy them proper will take no more than a couple of hours,” he said. It is, he noted, a conservative estimate to take account of the need for “additional adjustments after transit”. “Ordinarily, however, our systems can be deployed within five minutes,” Kornukov added.
Almost impossible to jam
No electronic warfare system in the world can suppress the S-300 completely, Kornukov also told Interfax-AVN.
“As far as protection from electronic countermeasures is concerned, we have not yet tested the S-300 in a combat environment,” Kornukov admitted. He went on to recall an occasion when countermeasures were deployed by “our Bering Strait neighbours”, which, however, did not prevent the success of that particular combat training mission.
It would, however, be wrong to say that the S-300 is totally immune to electronic countermeasures, Kornukov also said. “There are electronic warfare systems, including ours, that can affect its combat operation,” he said. A “smart commander”, however, can find a way round and still hit his target.
“Kornukov, however, declined to explain exactly how the S-300 could resist suppression by electronic countermeasures,” the Interfax-AVN report added.
(Description of Source: Moscow Interfax-AVN Online in Russian — Website of news service devoted to military news and owned by the independent Interfax news agency; URL: http://www.militarynews.ru)”