Friday, November 25, 2011

Re: [HamBrewers] 2kw HF linear amplifier made in China


there is one particular model from RM Italy, which is a full fledged amp for ham radio usage. it has band pass filters and operates with 13.8 volts. there are three exhaust fans also for
controlling the heat, more from here.

this amp works on the rf sense principle and only needs an rf input of 10 watts which even an rm96 can do and will produce about 450 watts out.


On 25 November 2011 17:09, Raj <> wrote:

I have one like these. It has no filter! Output is full of spurs and harmonics. Has two FETs for the finals.

There are some making solid state linear in China mainly for CB, but i found one which states HF. Looks similar to the RM series of amps.
Nitin [VU3TYG]

From: Prasad VU2PTT <>
Sent: Friday, 25 November 2011 4:10 PM
Subject: Re: [HamBrewers] 2kw HF linear amplifier made in China


Some more details from a friend in BY land - I quote him verbatim below:

About the amp, the models are HF2000DX, HF2010DX, AND HF2011DX-A.  The specs are almost the same with OM series (please check out the website: for more information). HF2000DX=OM 2500HF, HF2011DX-A= OM2500A, The price is about 20K RMB (HF2000DX) and 30K RMB (HF2011DX-A), HF2010DX = HF2000DX + a 4 line antenna switch, I'm not clear about the price for that, maybe it's around 1K - 2K more than HF2000DX.  Currently the exchange rate for RMB/USD is about 1usd = 6.35 RMB.  So I think you can get the rough idea about these amplifiers now.
But I don't know whether they can ship it to you country or not, and also have no idea about the shipping cost...

On Thu, Nov 24, 2011 at 1:28 PM, Yannick (XV4Y) < > wrote:
Hi raj,


Here more details. It is in french but with automatic translation you should understand :

Yannick DEVOS - XV4Y

Le 24 nov. 2011 à 14:52, Raj a écrit :

> Looks good, wonder what tube is in it.
>> 73,
>> Yan.
>> ---
>> Yannick DEVOS - XV4Y


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