功率其實不是主要的,發射天綫的輻射方向圖才是關鍵。我在上海南郊,分別與寧波台和浙江省台距離相當,但寧波台聲音清晰,浙江台信號微弱,而前者的功率只有後者的十分之一。


556 25-06-21 12:36


本文无内容
举报
举报主题
相关跟贴

回复



Fatal error: Uncaught PDOException: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '' for key 'user_token' in /home/wwwroot/17bb2023/web/system/application/pdo.class.php:46 Stack trace: #0 /home/wwwroot/17bb2023/web/system/application/pdo.class.php(46): PDO->query('INSERT INTO n4u...') #1 /home/wwwroot/17bb2023/web/system/application/session.class.php(61): n4u\application\pdo\pdo_mysql->query('INSERT INTO n4u...') #2 [internal function]: n4u\application\n4u_session\N4u_session->write('72jlv36j3hhcam3...', 'forum_user_grou...') #3 /home/wwwroot/17bb2023/web/system/application/session.class.php(114): session_write_close() #4 [internal function]: n4u\application\n4u_session\N4u_session->__destruct() #5 {main} thrown in /home/wwwroot/17bb2023/web/system/application/pdo.class.php on line 46