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”).

This is a strong week for Harris Corporation (HRS). The company’s rating climbs to B from the previous week’s C. Harris Corporation is an international communications equipment company focused on product, system, and service solutions. The company also gets A’s in sales growth, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of HRS stock.

The rating of Lumentum Holdings, Inc. (LITE) moves up this week, rising from a B to a A. The company also gets A’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of LITE stock.

RADCOM Ltd. (RDCM) boosts its rating from a B to a A this week. RADCOM Ltd. designs, manufactures, markets, and supports internetworking test analysis equipment and quality management for data communications and telecommunications networks. The company also gets A’s in sales growth, earnings growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of RDCM stock.

Sonus Networks, Inc. (SONS) improves from a C to a B rating this week. Sonus Networks, Inc. provides voice infrastructure solutions for wireline and wireless service providers. The company also gets A’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of SONS 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.