This week, the overall grades of 4 Communications Equipment stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Bel Fuse Inc. Class B (BELFB) declines this week from a C to a D. Bel Fuse Inc. Class B designs, manufactures, and sells products used in networking, telecommunications, high-speed data transmission, and consumer electronics. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of BELFB stock.

ClearOne, Inc. (CLRO) earns a D this week, moving down from last week’s grade of C. ClearOne, Inc. 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.

ShoreTel, Inc. (SHOR) is having a tough week. The company’s rating falls from a B to a D. ShoreTel, Inc. is a provider of Internet Protocol, or IP, unified communications systems for enterprises. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of SHOR stock.

This is a rough week for BOS Better Online Solutions Ltd. (BOSC). The company’s rating falls to D from the previous week’s B. BOS Better Online Solutions Ltd. provides radio frequency identification (RFID) and mobile solutions, and supply chain solutions primarily in the United States, the Far East, Europe, and Israel. For more information, get Portfolio Grader’s complete analysis of BOSC 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.