DSI DECOM SYSTEM INC, 7715 PCM BIT SYNCHRONIZER. Excellent used condition. Acquired from government surplus. Checked, working good. It's used, and perfectly good condition. No power supply. 
 
                                                          IMPORTANT INFORMATION - PLEASE READ  
 
 We are not familiar with every item we sell.  Some items may have missing parts or accessories and we do not realize they are missing. Do NOT assume parts or accessories are included.  If they are not in the photos or in the description, then they are not included. Please review the description and photos carefully.  If you are not sure if an item is included, email us BEFORE buying or making an offer. 
 
Please check the picture for details or conditions. 
 
Please ask any questions you may have before buying..
 
The item listed has been used and although in great shape. 
I appreciate you taking the time to stop by my store. If I can be of any assistance, please let me know. 
ebay.com/str/gmg1998