[Amps] RF-KIT SS AMP

charlie carroll k1xx at k1xx.com
Wed May 31 14:54:38 EDT 2017


Herb:
The PA is run from a 48V (3kw) switcher by Huawei.  I believe the model 
number is R4850G2.  Check out the datasheet to see the size.  12V is 
used for other stuff in the amp.

73 charlie, k1xx

On 5/31/2017 2:36 PM, Herbert Schoenbohm wrote:
> Interesting amplifier and the price is competitive.  What I don't see 
> is the power supply since to do 2.5 KW that would take a massive box 
> with a big transformer and filter. Maybe they stack a bunch of 48volt 
> DC switching supplies some where but that would take up a lot of 
> space. Yet the specs say it run on 12VDC.  That would be about 200 
> amps and wire the size of your arm....someone please explain.
>
>
> Herb, KV4FZ
>
>
> On 5/31/2017 1:18 PM, Alex Malyava wrote:
>> It does have 2kW LPF.
>> The price is about 2700 without antenna tuner and 3000 with antenna 
>> tuner.
>>
>> I have a google photo album with pictures I took in Dayton -
>> https://goo.gl/photos/N5FRkh9fG7KHnFzr5
>>
>>
>> On Wed, May 31, 2017 at 9:48 AM, <w8hw at comcast.net> wrote:
>>
>>> It is also missing LPF (Low Pass Filter) and that is most important, 
>>> You
>>> will need a minimum of 6 filters. Additionally you will need either a 6
>>> position wafer switch or will need to build communication path to 
>>> you your
>>> exciter for filter selection. Perhaps other hardware.
>>>
>>> 73, Bruce, W8HW
>>> =========================
>>>
>>> -----Original Message----- From: Jim Monahan
>>> Sent: Wednesday, May 31, 2017 08:26
>>> To: amps at contesting.com
>>> Subject: [Amps] RF-KIT SS AMP
>>>
>>>
>>> With all of the discussion recently about SS amps, here
>>> is one that might be worth checking out:
>>>
>>> http://rf-kit.de/en/2k_Kit.php
>>>
>>> RF-KIT, a firm based in Germany, was exhibiting a legal-limit HF 
>>> Amplifier
>>> Kit at the Hamvention. The unit on display was using two LDMOS power
>>> devices and sported a 7" color touchscreen for amplifier control and
>>> status. The kit includes everything necessary to build the amplifier 
>>> except
>>> the Raspberry Pi 3 CPU, and three fans. The company's literature states
>>> that it can be built in less than a day.
>>>
>>> Jim, K1PX
>>>
>>> K1PX at msn.com
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