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    2019-10-29 03:15:24

    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

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    2019-10-09 03:00:07

    Die Streueung bei den Modulen ist sehr hoch. Wenn man die so betreibt wie vorgegeben mit 12V, dann sind die gleich defekt. Ich habe angefangen mit 5V und dann die Spannung hochgeregelt. Das eien Modul arbeitet bei 7,5V das andere bei 10V. Das sollte so nicht sein. ausserdem fehlt die Wärmeleitpaste, die sollte man vor der Inbetriebnahme noch aufbringen. Alles in allem ein kostengünstiger Verstärker der aber mit Vorsicht zu benutzen ist.

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    2020-02-05 00:38:22

    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.

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    2020-01-14 22:26:02

    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.

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    2019-11-23 12:16:43

    Very impressed by this set it up with R&S sig gene and HP spectrum analyser works well clean in operation.... Runs all the time it is powered so standing current X voltage = heat I however have no complaints about this item just need to find a use for it now!

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    2020-07-25 08:42:43

    As previous comments. Max 12VDC no more. With 12VDC vertical alignment and addition ventilator are necessary.

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    2020-07-06 23:04:05

    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.

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    2020-02-27 07:28:16

    Good working ampifier with low noise level. For continuous operation I recommend additional air cooling.

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    2019-11-27 05:23:38

    Nice & functional. Some frequency output is 2F.

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    2019-11-26 20:46:31

    Buenas, no llega este producto a ecuador por favor necesito ayuda para rastrear el pedido ya pasó el tiempo estimado de llegada al pais de destino.

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