Four communications equipment stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

This week, MRV Communications, Inc. (MRVC) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). For more information, get Portfolio Grader’s complete analysis of MRVC stock.

Ituran Location & Control (ITRN) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Ituran Location and Control sells global positioning systems for locating motor vehicles and retrieving stolen cars. For more information, get Portfolio Grader’s complete analysis of ITRN stock.

The rating of Novatel Wireless, Inc. (NVTL) moves up this week, rising from a C to a B. Novatel Wireless provides wireless data modems and software for use with handheld computing devices and portable personal electronics. For more information, get Portfolio Grader’s complete analysis of NVTL stock.

ClearOne, Inc. (CLRO) is seeing ratings go up from a C last week to a B this week. ClearOne Communications develops and sells audio conferencing systems and related products for audio, video and web conferencing systems and applications. 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.