Hi LF After some time of forced QRT Im again on air transmitting LF WSPR-15 Tried a first transmission in WSPR-2 yesterday at 19:30 and all the rest were WSPR-15 at minute 15 and 45 Found a safe comb
Hi LF After some time of forced QRT Im again on air transmitting LF WSPR-15 Tried a first transmission in WSPR-2 yesterday at 19:30 and all the rest were WSPR-15 at minute 15 and 45 Found a safe
Congratulations Luis. I copied you the first time in the slot before my sunset. You were in command for some time, then it switched over to Stefan. I just uploaded some additional spots this morning.
Hi Luis, thanks for the nice readably summary report. Oh yes it was an impressing night and good resultsfor us. I saw you were decoded at SM2DJK which is a good distance, and R7NT was seen at 2E0ILY.
Hello DK7FC, Is the H bridge amp a published design Stefan, and if not, would you consider posting it please? :) -- Best regards, Chris mailto:[email protected]
Hi Chris, Yes i published it on Dropbox a few years ago but i think the link doesn't work any more. I attach the two images here, the size is small enough. 73, Stefan Am 21.11.2018 14:40, schrieb Chr
Contragulations, That is the ONLY other design I have seen for a LF amplifier using directly rectified mains. apart from my own half-bridge version http://g4jnt.com/137tx.pdf After building that
Hello DK7FC, Thanks for the schematics Stefan! Do you know exactly what toroid you used (assuming it is a toroid) for the gate driver transformer please? Would the output level of the Si chip in a QR
Hi Chris, Am 22.11.2018 11:36, schrieb Chris Wilson: Thanks for the schematics Stefan! Do you know exactly what toroid you used (assuming it is a toroid) for the gate driver transformer please? I tri
Hi LF After some time of forced QRT Im again on air transmitting LF WSPR-15 Tried a first transmission in WSPR-2 yesterday at 19:30 and all the rest were WSPR-15 at minute 15 and 45 Found a safe
Grazie Danielle WSPR-15 is amazing. But I was running 2.5A RF current at that time. And that helps ;-) 73 de Luis EA5DOM De: [email protected] [mailto:owner-rsgb_lf_group@blacksheep.
Grazie Danielle WSPR-15 is amazing. But I was running 2.5A RF current at that time. And that helps ;-) 73 de Luis EA5DOM De: [email protected] [mailto:owner-rsgb_lf_group@blac
Hi LF PA Have just seen this new MOSFET drivers with galvanic isolation. Seems very nice for QRO PAs using mains voltage https://www.st.com/content/st_com/en/products/power-management/mosfet-and-igbt