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Reviews Categories | Amplifiers: RF Power - HF & HF+6M | Emtron DX4 Help

Reviews Summary for Emtron DX4
Emtron DX4 Reviews: 3 Average rating: 5.0/5 MSRP: $(missing—add MSRP)
Description: The Emtron DX4 Linear Amplifier is a 4000 watt average output power, for 160m thru 10m bands.It utilises two high performance tetrodes, type GU84B (4CX2500)
Product is in production.
More info: http://
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W8IDL Rating: 5/5 May 23, 2016 09:51 Send this review to a friend
The Beast  Time owned: more than 12 months
My friends who also own the Emtron DX-4 all call it "The Beast."

Had a problem with mine, but with Rudi's help from the factory it was a relatively easy fix! Thanks!

This amp tunes easily, runs flawlessly, and is about as big an amplifier that can be run off single phase power. They are very difficult to find, and command a handsome price, but if you ever are lucky enough to own one, you'll proudly call it "The Beast" as well.
PA3DUV Rating: 5/5 Sep 25, 2005 14:22 Send this review to a friend
The Mean Machine, DX Bonecrusher  Time owned: 3 to 6 months
My Emtron DX-4 is powered from a seperate 3 phase power supply. The HT transformer is a back breaking 80 pound tape wound monster. It is so heavy that I decided to leave the power supply unit in garage on a set of casters, running a 6 meter HT cable + control cable to the shack on the first floor.

The RF deck is top notch! First class RF engineering and workmanship. Rudi and Orlando did another outstanding job with the DX-4 3 phase.

Obviously all the protection features including a remarkable accurate power AND SWR meter were there. Indestructible and putting out a stiff 6 kW PEP if needed.

The two GU84B tubes, capable of a total of 5kW plate dissipation are inexpensive and rugged.
The amp is stable, smooth tuning. One needs a certain physical strength to turn the massive bandswitch. No sissy-amp ;-)

I would recommmend the 3 phase version since drawing 10 kW+ out of a 230 volt mains might cause some problems.

Communication with Rudi is excellent by using the telephone. One gets answers instantly after posing the questions. (much better than e-mail)
For those who cannot affort the fares for an international phone call my recommendation is not to purchase the DX-4.

For the others: there is no way you can go wrong with this monster amp. Just make sure the other parts of you radio station can handle the required power levels.

73, Dick Knol

W4DXO Rating: 5/5 Oct 19, 2004 04:44 Send this review to a friend
Great  Time owned: months
Yes it's true, the best just got bigger.I have just tryed out Emtron Australia's new released DX-4 amplifier. This robust amplifier is for the elite,for those big guns that need a little bit more.It has all the specifications as the DX-3.
This amp is rated at 4000+ CW and 5 KW PEP
Thanks to Rudi and the team at Emtron for a Great amplifier

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