The former output powers were taken using JS8Call software and show the power transmitted with JS8 mode.
I took the same measures using the "transmitter test" of Putty, clicking on "T" and read the following values:
- 30M - 2.7W
-20M - 3.7W
-17M - 3.8W
-15M - 1.5W
-12M - 1.5W
-10M - 4W
I should maybe finely tune the 15 and 12M bands and am satisfied witht he 10M result, which is important currently with the high solar activity. I have been heard on the East Coasts of Canada and USA on 10M with JS8 signals as recorded by pskreporter.info, around 9,000 miles, not bad for less than 4 Watt!
A last remark: replacing the 4 BS170 and removing the output transformer to rewind it was not an easy task for a 80 years old OM with bad eyesight and shaky hands but I definitely think the QDX very tiny board is well designed and manufactured and will accept abuse! This let me confident for my next build: either a Mid-band QMX or a QMX+, the latter being preferred.
73 - Pierre - FK8IH?
Pierre - FK8IH