N.S.G. Network Services Group 2-144E ISDN-BRI Central Office Emulator 134331890535 This Electron Tube has been

This Electron Tube has been pulled from a functional environment

Manufacturer Mini-Circuits Model Number ZX75BP-1135-S+ SKU 19-68610 Ref 23-97914

The top polarization knob are very stiff and hard to move

Manufacturer Spectra-Physics Model Number 261B-01 SKU 19-52499 Ref 23-76477

Manufacturer Fostex Model Number D-5 SKU 19-04917 Ref 23-86553

N.S.G. Network Services Group 2-144E ISDN-BRI Central Office Emulator 134331890535 This Electron Tube has beenThis item is out of stock. Contact us to be notified when it becomes available again. Specifics Manufacturer N. S. G. Network Services Group Part Number NSG 02 0144 Model Number 2 144E SKU 19 42139 Ref 23 69963