The EMC Shop rents, sells and services IFI amplifiers. Instruments for Industry in Ronkonkoma closed in 2020. IFI lead the path in traveling wave tube amplifiers for military and aerospace high frequency susceptibility testing. Once acquired by Ametek, the inability to stay up to date on solid state technology, as well as declining customer service, lead to the closure of the Ronkokoma facility. While IFI amplifiers are still available from Ametek, service is to be performed by Milmega in Europe and as a sub 6 GHz, solid state amplifier company, servicing traveling wave tube amplifiers has been quite a challenge.