The grades of 3 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”).

Silicom Ltd.’s (SILC) ratings are looking better this week, moving up to a B from last week’s C. Silicom Ltd. designs, manufactures, markets, and supports Multi-Port Gigabit-Ethernet Server Adapters. The company also gets A’s in sales growth, earnings growth, earnings revisions, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of SILC stock.

RADCOM Ltd. (RDCM) improves from a C to a B rating this week. RADCOM Ltd. designs, manufactures, markets, and supports internetworking test analysis equipment and quality management for data communications and telecommunications networks. For more information, get Portfolio Grader’s complete analysis of RDCM stock.

ClearOne, Inc. (CLRO) is seeing ratings go up from a B last week to a A this week. ClearOne, Inc. develops and sells audio conferencing systems and related products for audio, video and web conferencing systems and applications. The company also gets A’s in operating margin growth, earnings growth, earnings revisions, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CLRO 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.