Need help injecting my dx2517? It’s a ept690010d board with dual 520 mosfets any help would be great.. just need the injection points.. seems like there is maybe some about c235 and a resistor ....
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Direct inject dx2517 help?
- Thread starter Justwantdahifiaudio
- Start date
Remove R262. Audio in towards C235, cable shield to electric ground.
I would also change C235 to 1uF to get wider audio.
Mike
I would also change C235 to 1uF to get wider audio.
Mike
Update was working perfect, finals went out replaced both 520s .. driver was working (could hear my self on near by radio) then not even 30 mins later slowly started losing rf power again? Now back to 0 watts? I’m using a mixer with Irig and iPad.. maybe mixer is to much?
So radio is new to me I see I has some swing kit in at r234 and q39 is missing but radio was fine before injection was done. What do you mean to much power out like rf power? Only set at 1 watt so maybe the bias is off? Maybe these so called 520 transistors aren’t so I got 10 off eBay maybe I should check one to see if it’s mosfet
Yes, too much RF, 520 do not like over driving. Probably you also put too strong signal from your audio chain.
Mike
Mike
Shadetree Mechanic
Delaware Base Station 808
I think most people inject through an extra capacitor to block DC. It might be possible that DC on the injection line could affect the bias?
Not a chance, because blocking capacitor is C235 we connect. No need to add another in series. Won't hurt, but won't help either.
Mike
Mike
So just a update the radio is working awesome! Just wish I could get it alittle more wide with the audio, other then that, sounds freaking awesome. Am regulator was giving me issues, installed max mod removed swing kit and radio is going strong..