Thanks for the heads up, understood, cheers.
Sunday, June 16, 2019
Chris 2E0ILY mailto:chris@...
aK> For digital modes most, but far from all, are class C, D or E.
aK> The biggest fet a a BS170 can drive is an ambiguous question.
aK> Assuming you are getting 300mW of output the largest fet would
aK> produce as much as 3 to 6W is properly matched and an
aK> IRF510 or 530 can do that. It really depends on how much
aK> drive you can have as the gain of most of the IRF MOSfets
aK> is about 13-16DB.
aK> FYI if you willing to spend a lot of money you can use UHF RF
aK> rated mosfets like MRF137 which will have 20db or so gain
aK> at 10mhz. Very good construction and all good care plus
aK> a 28V power source will be required. Its a 30W output device.
Best regards, Chris Wilson (2E0ILY)