Müşteri Değerlendirmesi

Bir Değerlendirme Yaz
  • Toplam (93) İnceleme
  • (1) Görüntü
  • (0) Video
  • Tüm Yıldızlar
    • Tüm Yıldızlar(93)
    • 5 Yıldız(88)
    • 4 Yıldız(3)
    • 3 Yıldız(2)
    • 2 Yıldız(0)
    • 1 Yıldız(0)
Göre sırala:
En İyi İnceleme
  • En İyi İnceleme
  • En Yararlı
  • En Son
Yalnızca ülkenizden yorumlar (Turkey)
|
Orjinali göster

İncelemenin bir kısmı otomatik olarak çevrildi.

  • 08/08/2019

    Buy 2 samples until arrived after connected output antenna and supply it at 12Vdc draw more then 0,3Amp and start burned !!!!! on IC2. Second sample tested again at 12 Vdc , Not burned but hot too and power RF amplierf doesn't more than 10dB. For me very poor device maybe weren't 2 lucky pieces....

    Yorumlar
    Orjinali göster
  • 29/10/2019

    Goods received in perfect condition through postal services in about 4-5 weeks time, which is absolutely normal. The goods were checked in the RF workshop, and turned out to be capable of 1 Watt Maximum output by feeding 0dBm (1 milliwatt input), confirming the reliable almost uniform gain within the specified band (1-700MHz) of 30dB with linearity. We could not test it at higher power levels due to limitation of our Rf signal generator, whose output power level is limited to 0dBm (1 mW) max. Further investigation revealed that the module uses the following components with suggested power levels recommended by the manufacturer for reliable operation. RD01MUS1 (SMD CODE - K2) as the final stage rated for 520MHz, 1Watt SBA-5089Z-Sirenza. (SMD CODE - BA5Z) as the first driver stage. It may be possible to use this module at higher power levels, However we ourselves use the devices safely to half of their capacity for long term reliability for continuous operation. I am very happy to use them between 0.5 ~ 1.0 watts for our applications.... Very satisfied with the results, this will find use in various applications.

    Yorumlar (1)
    Orjinali göster
  • 05/02/2020

    Before connecting, use silicone grease under the transistors. The maximum voltage is 12 V. The transistors operate in class A. At 12 V, the current is 0.45 A. 1.25 W output power, 27 dB power gain at f = 400 MHz.It will be good as a class B symmetric output stage driver. Delivery time was 60 days.

    Yorumlar
    Orjinali göster
  • 14/01/2020

    Good value... but can be modified to work better by reducing the bias current on the output stage. Resistor R6 needs to be reduced. Can use a small (10k) trimpot to make adjustable.

    Yorumlar (1)
    Orjinali göster
  • 11/08/2021

    Very good

    Yorumlar
    Orjinali göster
  • 27/11/2019

    Nice & functional. Some frequency output is 2F.

    Yorumlar
    Orjinali göster
  • 06/11/2021

    tiny but good!

    Yorumlar
    Orjinali göster
  • 22/08/2020

    Werkt goed bij een voedingsspanning niet hoger dan 10 volt 100ma. Ingebouwd in een metalen behuizing, met een opening waar de koelvinnen doorheen steken.

    Yorumlar
    Orjinali göster
  • 06/07/2020

    Powered up on 15.03 VDC as specified and transmitted. It fried in 10 seconds. I suggest using only 12.0 VDC NO MORE. Awaiting new order.

    Yorumlar
    Orjinali göster
  • OTBVIP1
    BE
    04/07/2019

    Haven't yet tried it...but all other things I ordered all worked fine. So no fear that this one won't work. And great quality for such a price. I use it for all kind of experiments.

    Yorumlar
    Orjinali göster
Show:

    Toplam 0 sayfaları

    Sayfaya git

    Git

    İlginizi çekebilir

    recommendation for you
    • US$6.99
    • US$9.99
    • US$11.85
    • US$8.60
    • US$36.99
    • US$11.99
    • US$15.55
    • US$15.98
    • US$17.99
    • US$9.80
    • US$56.57
    • US$129.14
    • US$19.18
    • US$35.66
    • US$19.99
    • US$65.18
    • US$53.47
    • US$18.44