PHPWIND
HELLOCQ
UID:680
UID:5987
UID:32899
UID:372627
李铁柱79:摩托的机器可以写频率到0.1K赫兹啊GP88就行 (2014-05-16 18:23)
UID:10305
bd7cv:两个对讲机收发各一调参考频率[表情] (2014-05-23 23:09)
UID:375439
bg2byd_qrp:B1-PHASE L调制的406.028MHz的国际海事卫星搜救定位信号,同时产生AM调制的121.5/243MHZ的现场人员搜救信号。406.028MHz的信号要求频率精度为406.028MHz ± IkHz,传输周期为50s ±5%内发射一次520ms ± 1%长信息, .. (2014-05-24 11:03)