What is this? (for the Soviet experts)

I photographed this at the IDF/AF museum in Hatzerim, among a display of captured anti-aircraft weapons. I think its a towed radar of some sort, apparently captured during the 1973 Yom Kippur War. Does anyone know what this is, provide some data on its abilities, users (former and current) and possibly other pictures of it?

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U.N. Representative: So, Mr. Evil –
Dr. Evil: It’s Dr. Evil, I didn’t spend six years in Evil Medical School to be called “mister,” thank you very much.

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