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”).

The rating of CommScope Holding Co., Inc. (COMM) moves up this week, rising from a C to a B. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of COMM stock.

CalAmp Corp. (CAMP) gets a higher grade this week, advancing from a C last week to a B. CalAmp Corp. develops and markets wireless communications solutions that deliver data, voice, and video for critical networked communications and other applications primarily in the United States. For more information, get Portfolio Grader’s complete analysis of CAMP stock.

This week, Applied Optoelectronics, Inc.’s (AAOI) ratings are up from a B last week to a A. The company also gets A’s in sales growth, operating margin growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of AAOI stock.

RiT Technologies Ltd. (RITT) boosts its rating from a B to a A this week. RiT Technologies Ltd. develops, manufactures, and sells wiring products and premise and local loop connectivity management systems. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of RITT 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.