The grades of 4 Communications Equipment stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Harris Corporation (HRS) gets a higher grade this week, advancing from a C last week to a B. Harris Corporation is an international communications equipment company focused on product, system, and service solutions. The company also gets A’s in sales growth and return on equity. For more information, get Portfolio Grader’s complete analysis of HRS stock.

This is a strong week for InterDigital, Inc. (IDCC). The company’s rating climbs to B from the previous week’s C. InterDigital, Inc. develops technology for advanced digital wireless telecommunications applications. The company also gets A’s in earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of IDCC stock.

Digi International Inc. (DGII) is seeing ratings go up from a B last week to a A this week. Digi International Inc. develops products and technologies to connect and manage local or remote electronic devices over a network, via the Internet or via satellite. The company also gets A’s in operating margin growth, earnings growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of DGII stock.

This week, AudioCodes Ltd. (AUDC) pushes up from a C to a B rating. AudioCodes Ltd. designs, develops, and markets products for voice and data over packet networks. For more information, get Portfolio Grader’s complete analysis of AUDC stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.