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I want to have dual finals in SS3900
Posted: Tuesday 20th May 2008, 8:14
by dxswe
I wonder if its possible to have dual finals in SS3900.The pcb number is Ranger EPT360015C .The final transistor it's a mosfets IRF 520.
The pc board it's very like Galaxy HML 77 pc board.
http://www.cbtricks.com/radios/galaxy/d ... 4c_top.gif
Posted: Monday 9th Jun 2008, 11:33
by speedracer6g
I have done a couple of the dual mosfet upgrades for the older radios that were using the bipolars here in the shop. I would say if it has mosfets in it now that you shold be half way there. You will need a few parts to get things going but it is not hard. YOu will need to get an IRF520N mosfet for TR43 no other version will work properly trust me on that one. I have had this headache before using other cheaper versions of this mosfet. I get mine from digikey.com or mouser.com. If you can read a schematic just folow the schematic from the dx-33hp and if you need any help just pm me or email me at
mike@mynovasecurity.com and i can gladly help you out. I have all the parts for this mod also so i can give you a good price on that stuff to if you need it. I can save you alot on shipping probably since you wont have to order form ten different places also. Just go to the rf output put in the parts that are missing from the pcb. there is a few jumpers you will need to insall also.
http://www.cbtricks.com/radios/galaxy/d ... hp_sch.pdf
MIKE
