144.000～144.390MHz：该频率范围主要用于业余无线电通信，包括本地通信、远距离通信、数字通信等。144....
下面频段对应的大约波长是:7.0—7.1MHz、21.0—21.45MHz、28.0—29.7MHz、144—148MHz; 答案:( ) A. 40m、15m、1
144——148是中国业余无线电频率，美国的不清楚 你要去问与美国HAM通联过的人。业余无线电是一个特殊的爱好，并不是娱乐，业余无线电爱好者主要是与各地和各国的电台通联，太多了 你自己在网上找找吧。
เครื่องขยายเสียง VHF 144-148MHz โหมด-CW, SSB, FT8, rtty, EME, FM ECT, ฯลฯ ไม่มี Transistors-MRF300AN MRF300BN (บอร์ดอินพุตและเอาต์พุต) แห...
俗称的2米业余波段的频率范围以及我国业余业务和卫星业余业务的使用状态分别为:A.144-146MHz;专用B.144-148MHz;其中144-146MHz为唯一主要业务
Specifications: Frequency Range: 144-148MHz Voltage: 12.5V Power Consumption: 37W Modulation: SSB Application: Mobile Radio Certification: Series of Certifications Features: **Unmatched Performance and Reliability** The New&original M57727 MODULE is a cutting-edge mobile radio module designed for the...
百度试题 结果1 题目民航通信中,VHF通信系统的工作频率范围是多少? A. 108-136 MHz B. 118-137 MHz C. 136-144 MHz D. 144-148 MHz 相关知识点: 试题来源: 解析 B 反馈 收藏
2m 144 - 148MHz Current Balun 1.5KW £44.95 70cms 420 - 480Mhz Current Balun 700W £37.95 4 element 18MHz OP-DES Yagi (6.4m) HF 160-6m Current Balun 3KW £79.95 3 element 144MHz OWL rear mount for vertical or horizontal mounting 10m - 6m two band DES...
1.25m Radio|High Power Output:Delivers a robust 37W of power, ensuring clear communication in high-noise environments. Factory Fit and Finish:Designed for a seamless fit, this radio maintains the factory aesthetics of your vehicle. Wide Frequency Range:Operates on 144-148MHz, catering to a broa...
New Original CB Radio YI-889G 144- 148 MHZ 430- 440 MHZ 999 Channel Mobile Transceiver AM/FM/SSB LSB USB 500KM Radio, You can get more details about New Original CB Radio YI-889G 144- 148 MHZ 430- 440 MHZ 999 Channel Mobile Transceiver AM/FM/SSB LSB USB