| | Dual Mosfet Conversion info for Dx 949 / 959 | |
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binrat Admin

Number of posts: 458 Age: 50 Registration date: 2008-05-01
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outlawmobile Admin

Number of posts: 804 Age: 39 Name: Shawn Kirkpatrick Registration date: 2008-04-30
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Guest Guest
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outlawmobile Admin

Number of posts: 804 Age: 39 Name: Shawn Kirkpatrick Registration date: 2008-04-30
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binrat Admin

Number of posts: 458 Age: 50 Registration date: 2008-05-01
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Sat Nov 01, 2008 9:40 pm | |
| Yes, but the most common MOSFET is the 520 mosfet. It is a switching mosfet where as the mosfet in the conversion is a RF mosfet. I think that it would more energy effective than the 520. But then again, I'm getting old and lacking hair. binrat |
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Guest Guest
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outlawmobile Admin

Number of posts: 804 Age: 39 Name: Shawn Kirkpatrick Registration date: 2008-04-30
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Sat Nov 01, 2008 11:35 pm | |
| Yeah I mean they havent really been in widespread use long enough to tell for sure.We shall see,my General is about a year old with no problems so far and you know me.....I use the heck outta that radio  Shawn _________________ Snowman...The Real #1 around the Keystone.You will be missed...You will not be forgotten.R.I.P my friend.  |
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binrat Admin

Number of posts: 458 Age: 50 Registration date: 2008-05-01
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steved
Number of posts: 86 Registration date: 2008-05-02
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Tue Nov 04, 2008 10:14 pm | |
| I asked about the dual final conversion for this DX959 I have, and while DTB Radio was willing to do it, he said it would be disappointing (not doing the watts it really should, or would be expected to do, with dual finals). Something about the fact the radio doesn't have the power supply to adequately run dual finals... |
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binrat Admin

Number of posts: 458 Age: 50 Registration date: 2008-05-01
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Wed Nov 05, 2008 8:01 am | |
| Steved, Look at page 8 on the link I posted. From what I have read about this particular mosfet final is that it is a RF transistor that works on a higher voltage. There is a number of components that are disconnected from the board. Quickly looking it appears that doing so raises the voltage to the finals. binrat |
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steved
Number of posts: 86 Registration date: 2008-05-02
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Wed Nov 05, 2008 9:09 am | |
| I only know what I was told...I was told that it was a bad idea. IIRC, the radio would become frequency unstable and all but unusable on SSB (forgive me, its been several months since I had the radio touched). I was given the choice on whether to do the mod or not, which I inquired about because I saw it on the net... In my thinking, I was thinking a dual final configuration would run that 4-pill nicely...the reason I asked about it...but since I was running a 4-pill, it really didn't matter that much, in the fact that clean stable signal was more important than a few extra watts. I can add no more to this thread, since I really only know what I was told... |
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binrat Admin

Number of posts: 458 Age: 50 Registration date: 2008-05-01
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Wed Nov 05, 2008 10:53 am | |
| If you got that advice from a sound tech then I would say go with it. I have been searching the net alot looking for info on it and have heard from another forum, that they are good but may require a few small adjustments after. binrat |
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Guest Guest
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Wed Nov 05, 2008 11:50 pm | |
| if i was u i was keep the stock finals in that thing and throw thise mosfets away ....they are junk!!!! 1.they get hot to fast 2.when they get hott u get power lost.. 3.the hermonics are stuiped they bleed though everything 4.they are junk |
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steved
Number of posts: 86 Registration date: 2008-05-02
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Sat Nov 08, 2008 2:35 pm | |
| | worldwide064 wrote: | if i was u i was keep the stock finals in that thing and throw thise mosfets away ....they are junk!!!!
1.they get hot to fast 2.when they get hott u get power lost.. 3.the hermonics are stuiped they bleed though everything 4.they are junk |
Considering the fact they have been the stock final for two years now...they seem to be working well enough. My DX959 has a mosfet, and its the stock final...I get none of the issues you describe with my DX959. |
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Guest Guest
 | Subject: Re: Dual Mosfet Conversion info for Dx 949 / 959 Sat Nov 08, 2008 10:38 pm | |
| Considering the fact they have been the stock final for two years now...they seem to be working well enough. My DX959 has a mosfet, and its the stock final...I get none of the issues you describe with my DX959.[/quote] they got different size mosfet final just like the old finals.... but i bet u $100 if you get someone who knows wat they are doing to radio and works that radio out all those things will happened |
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| | Dual Mosfet Conversion info for Dx 949 / 959 | |
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