번역증명서 일련번호 넘버 : 2004010804108186
증명서 상태 : 유효한
응모자 아이디 : 동관 시티 TECSUN 텍선 범용 전자제품 제조 유한회사
제조 몫 아이디 : 동관 시티 TECSUN 텍선 범용 전자제품 제조 유한회사
제품 아이디 : 고성능 올웨이브 디지털 동조 스테레오 라디오
3C 제품 모델 : PL-600、PL-660
3C 규격 모델 : PL-600、PL-660、PL-680
제품 아이디 : Tecsun/ TECSUN 텍선 PL-660
브랜드 : Tecsun/ TECSUN 텍선
TECSUN 텍선 라디오 브랜드 : PL-660
애프터 서비스 : 보증
유래 : 중국 컨티넨탈
지방 : 광동성
사이즈 : 187×114×33 mm
채널 : 2
배터리 방식 : 교류 충전
무게 : 470g
제조업체 : 동관 시티 TECSUN 텍선 범용 전자제품 제조 유한회사
라디오 동조 방식 : 디지털 동조
밴드 유형 : 풀 밴드
라디오 유형 : 휴대용
배터리 규격 : 5 호
구매 장소 : 중국 컨티넨탈
보증 기간 : 12 개월
원문证书编号: 2004010804108186
证书状态: 有效
申请人名称: 东莞市德生通用电器制造有限公司
制造商名称: 东莞市德生通用电器制造有限公司
产品名称: 高性能全波段数字调谐立体声收音机
3C产品型号: PL-600、PL-660
3C规格型号: PL-600、PL-660、PL-680
产品名称: Tecsun/德生 PL-660
品牌: Tecsun/德生
德生收音机品牌: PL-660
售后服务: 全国联保
产地: 中国大陆
省份: 广东省
尺寸: 187×114×33 mm
声道: 2
电源方式: 交流电
重量: 470g
生产企业: 东莞市德生通用电器制造有限公司
收音机调谐方式: 数字调谐
波段类型: 全波段
收音机类型: 便携式
电池规格: 5号
采购地: 中国大陆
保修期: 12个月
번역 실버 스탠다드 그물 보내기 통과하다 주파수계 + 화물 보험
원문 银色标配送网传频率表+运费险
번역 블랙 선물 충전 키트 (4 절 )+ 화물 보험
원문 黑色送充电套装(4节)+运费险
번역 실버 선물 충전 키트 (4 절 )+ 화물 보험
원문 银色送充电套装(4节)+运费险
번역 블랙 재충전 보내기 커버 (4 절 )+U600 변환케이블 + 화물 보험
원문 黑色送充电套(4节)+U600转换线+运费险
번역 실버 재충전 보내기 커버 (4 절 )+U600 변환케이블 + 화물 보험
원문 银色送充电套(4节)+U600转换线+运费险
![](https://img.alicdn.com/imgextra/i3/1678361623/TB2ia30lpXXXXX.XXXXXXXXXXXX_!!1678361623.jpg)
![](https://img.alicdn.com/imgextra/i3/1678361623/TB29VQplpXXXXciXpXXXXXXXXXX_!!1678361623.jpg)
![](https://img.alicdn.com/imgextra/i2/1678361623/TB2JBsBlpXXXXabXpXXXXXXXXXX_!!1678361623.jpg)
![](//gd3.alicdn.com/imgextra/i3/152190892/T2tcScXhXaXXXXXXXX_!!152190892.jpg)
![](https://img.alicdn.com/imgextra/i1/1678361623/TB2.L_iemVmpuFjSZFFXXcZApXa_!!1678361623.jpg)
Colors available: black, silver
![](https://img.alicdn.com/imgextra/i3/1678361623/TB2RBPDed4opuFjSZFLXXX8mXXa_!!1678361623.jpg)
![](https://img.alicdn.com/imgextra/i4/1678361623/TB2lKbveblmpuFjSZFlXXbdQXXa_!!1678361623.jpg)
![](https://img.alicdn.com/imgextra/i1/1678361623/TB2YZzred0opuFjSZFxXXaDNVXa_!!1678361623.jpg)
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The following is tested in various placesPL-660Some photos in the process
Radio Forum Netizens【Little Ma】provide
The feature of synchronous detection technology is that it can select the sideband that is not interfered by the adjacent frequency from the upper and lower sidebands of the listening frequency for detection and restore the sound. Therefore, the synchronous detection technology is compared with the traditional double-sideband detection technology. Better ability to suppress adjacent channel interference.
Illustrate the working principle of synchronous detection technology in AM radio:
![](//gd2.alicdn.com/imgextra/i2/152190892/T20tqcXhBXXXXXXXXX_!!152190892.jpg)
In this case: the lower sideband of the broadcast frequency on the picture is interfered by adjacent channels. When receiving, the synchronous detection technology is used to select the upper sideband to avoid interference.
It must be emphasized that the synchronous detection technology can overcome or reduce the crosstalk from adjacent frequencies of the upper and lower sidebands, but cannot do anything against the interference of the same frequency.
What can I receive on the aviation band?
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Used by civil airports all over the world118-137MHZ(AMStandard), To guide the take-off and landing of the aircraft, and at the same time, use a fixed frequency to continuously broadcast weather information around the airport.
Can receive118-137MHz(AMsystem)The radio receiver of the signal, within a distance of tens of kilometers from the airport, may receive the dialogue between the airport navigation station and the pilot of the aircraft, as well as the weather forecast around the airport.
Many professional and amateur radio communication receivers can receive aviation band signals.S2000 can alsoReceived the aviation band signal, the release this timePL660, Keyson’s portable radio with aviation band, according to our test experience in various places,PL660It is an aviation band radio with very excellent performance.
Matters needing attention when using aviation band:
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According to my country’s flight safety regulations, passengers cannot open the flight mode during the entire flight.GPSMobile phone and aviation band receiver.