Exhibit 21

AVIAT NETWORKS, INC.

SUBSIDIARIES AS OF JULY 1, 2011

(100% direct or indirect ownership by Aviat
Networks, Inc.)



|                                                          |  |                                            
|--------------------------------------------------------- |  | -------------------------------------------
|Name of Subsidiary                                        |  | State or Other Jurisdiction ofIncorporation
|Aviat Networks Algeria S.A.R.L.                           |  | Algeria                                    
|Aviat Networks (Australia) Pty. Ltd. .                    |  | Australia                                  
|Aviat Networks (Bangladesh) Limited                       |  | Bangladesh                                 
|Aviat Networks Brasil Servicos em Communicacoes Ltda.     |  | Brazil                                     
|Stratex Networks do Brasil Ltda.                          |  | Brazil                                     
|Aviat Networks Canada ULC                                 |  | Canada                                     
|Aviat Communications Technology (Shenzhen) Company Ltd.   |  | The Peoples Republic of China             
|Harris Communication France S.A.S.                        |  | France                                     
|Stratex Networks S.A.R.L.                                 |  | France                                     
|Aviat Networks Ghana Limited                              |  | Ghana                                      
|Aviat Networks Holland B.V.                               |  | The Netherlands                            
|Aviat Networks HK Limited                                 |  | Hong Kong                                  
|Aviat Networks (India) Private Limited                    |  | India                                      
|Telsima Communications Private Limited                    |  | India                                      
|Pt. Aviat Networks Indonesia                              |  | Indonesia                                  
|Aviat Networks Côte dIvoire                              |  | Ivory Coast                                
|Aviat Networks (Kenya) Limited                            |  | Kenya                                      
|Aviat Networks Malaysia Sdn. Bhd.                         |  | Malaysia                                   
|Digital Microwave (Mauritius) Private Limited             |  | Mauritius                                  
|Aviat Networks México S.A. de C.V.                        |  | Mexico                                     
|Aviat Networks (NZ) Limited                               |  | New Zealand                                
|Aviat Networks Communication Solutions Limited            |  | Nigeria                                    
|Stratex Networks Nigeria Limited                          |  | Nigeria                                    
|Aviat Networks (Clark) Corporation                        |  | The Philippines                            
|Aviat Networks Philippines, Inc.                          |  | The Philippines                            
|Aviat Networks Polska Sp. z.o.o.                          |  | Poland                                     
|Aviat Networks (S) Pte. Ltd.                              |  | Republic of Singapore                      
|Telsima storitveno podjetje, d.o.o.                       |  | Slovenia                                   
|Aviat Networks (South Africa) (Proprietary) Limited       |  | Republic of South Africa                   
|MAS Technology Holdings (Proprietary) Limited             |  | Republic of South Africa                   
|DMC Stratex Networks (South Africa) (Proprietary) Limited |  | Republic of South Africa                   
|Aviat Networks Tanzania Limited                           |  | Tanzania                                   
|Aviat Networks (Thailand) Ltd.                            |  | Thailand                                   
|Aviat Networks (UK) Limited                               |  | Delaware                                   
|Aviat International Holdings, Inc.                        |  | Delaware                                   
|Aviat U.S., Inc.                                          |  | Delaware                                   
|Telsima Corporation                                       |  | Delaware