I Just finished to build the ver3 today, After a wrong antenna connection the 4 MOSFET are gone...replaced and start TX again. But is hot...even for ft8 not only t1 also the transistor on the bottom side smd.
Il mar 14 giu 2022, 19:27 cris blak via <cyo3fff=[email protected]> ha scritto:
Hello John,
Do you think it could deliver power with a short windings on T1? I mean 3 to 5W at 12V for 3:2 turn ratio?
If you have a working QDX, could you please be so kind and let us know if your T1, R2 and R4 becomes hot (hot mean cannot keep a finger on it) after a WSPR TX (2min)? Maybe we, the one with this issue, have a real problem and the circuit is all right.
Look forward hearing from you.
Thank you.
73 de YO3FFF
Cristi
Pe vineri, 10 iunie 2022, 21:10:16 EEST, John Kiernan <kiernanjuscgaux@...> a scris:
Sounds like a short in the windings. Or was wound for wrong voltage. I would start there.
On June 10, 2022, at 11:27 AM, "cris blak via " <cyo3fff=[email protected]> wrote:
Does anybody has QDX T1 heating on transmit mode or I'm the only one? I have the latest V3 version.
I'd like to hear from your experience on this issue.
