Testing the DX WORLD amp board and comparing it to the 4 x MRF300 VK-AMP board .
Автор: busarob1969
Загружено: 2021-04-08
Просмотров: 7974
Описание:
here is the link to the vk AMP eBay board
Sold to a friend of mine.
• Australian made mrf300 x 4 amp board sol...
And now here is this video, is the test of just two of the same devices ( mrf300)
I pulled these of one of my VK-AMP. Australian boards.
As you can see, the Dx world board, in the video, 645 watts out from 7 watts of drive after the attenuator
At 53 volts and 15.6 amps for a efficiency 78%
Now the 4 x mrf300 , Australian made amp , made 560 watts for 10 watts of drive
27 amps at 48 volts for an efficiency of only 43%
If I run two, DX world boards, for 4 devices In total, I would be At 1290 watts
At around 31 amps .
This is a far cry from even the 780 watts at 28 MHz shown on the Australian board makers you tube
Channel .
And the, Dx world boards easily makes 660 watts on 28 MHz on just two devices and would
Easily make 1320 watts up on 10 mtrs with two boards and 4 x Mrf300,
540 watts more than the Australian made 4 x mrf300 board.
Next video will show , harmonics pre filter, imd products and the wave form at 600 watts on the scope .
Thanks for watching .
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