06-05-2011, 03:53 PM
| || |
| || |
Join Date: Dec 2008
Location: Silicon Valley CA, Storm Lake IA
Originally Posted by cbkidd1
When i bought the radio it was putting out over 300 watts. Before i started talking on it i wanted to make sure it was set up right. So i researched the irf520 mosfets. And found that a lot of people had bought the same radio and because the power and voltage was not set right the mosfets burned up. Good thing i did so mine would not be one of them. If you are going to make a quality radio like a 2970n2 then you sure make sure it is going to work right before you sell them. Looks like from what i have read a lot of people found out the hard way.
If the factory didn't set up the radios correctly before they shipped them out; then they would be deluged with returns and warranty repairs. The ONLY place that I know of - personally - that RUINS radios is RadioActive Radios. First hand knowledge - BTW. Have these radios been getting a bad rep because of being poorly adjusted from the factory? I never heard that yet.
So long as the driver and final are set up correctly; it should be fine. Is the final - the one before the final power amp - a MOSFET too? If so; then MOSFET's are voltage controlled. In which case, you would want to have the voltage set at a point where it has just enough to turn/switch it on. Then, I would adjust the hi power VR to a desirable level. Preferably to 75% of its potential output - IMO. . .
BASE: Kenwood TS-2000 w/Alpha Delta DX-CC, Diamond X50A, Sirio SY27-4, and IMAX 2000.
MOBILE: Galaxy DX99V w/RF Limited CR-577 mic, Sirio Z-180. Yaesu FT-8800R & Diamond NR-770.