again a page full continuous decodes of WE6XGR Sunday morning.
only 1 time decoded partly WE2XGR/2 in FN31LS
weak signals -17dB as best only
Overall propagation weak. In the WAERTTY low activity
0148 -25 1.8 0.499500 0 WE6XGR FN12 50
0154 -27 2.4 0.499450 0 <...> FN31LS 47
0204 -25 1.8 0.499500 0 WE6XGR FN12 50
testing my QTX 500kHz I have used that one before at 502.4 kHz in 2010
The first power on the 6.3A fuse was blown.
Already lost 2 IRF540 while testing the output on a dummy load
trying to tune down to 475 kHz gave high currents and lost the IRF540
at 500 it seems to work okay.
If I can believe my power meter the output is well over 100W
at 6A 24V input never had that much output from this simple but genius design.
But the IRF540 can not handle this level and breaks down after 10seconds good that I have got some spares but it puzzles me how could I have used this in 2010 for WSPR without failure so long
WSPR having 2min. TX periods.
It is clear that this is still QRP in the MW bands. Only with exceptional propagation decodes are possible in USA. And propagation for the low bands have not been as good as a few years back.
My QTX is still in experimental form..
The digital driver part 2 legs up IC's and ceramic 500kHz resonator are no longer used.
The K3 was and now the FLEX1500 is direct connected to the totem pole driver input of the QTX.
WE6GXR and others using 1kW 100% duty cycle. in a good TX antenna.
with a fb professional designed TX.
http://www.w1vd.com/137-500KWTX.html
Driving it with the Flex1500 at XVTX/C output in XVTR mode
only 1 time decoded partly WE2XGR/2 in FN31LS
weak signals -17dB as best only
Overall propagation weak. In the WAERTTY low activity
0148 -25 1.8 0.499500 0 WE6XGR FN12 50
0154 -27 2.4 0.499450 0 <...> FN31LS 47
0204 -25 1.8 0.499500 0 WE6XGR FN12 50
testing my QTX 500kHz I have used that one before at 502.4 kHz in 2010
The first power on the 6.3A fuse was blown.
Already lost 2 IRF540 while testing the output on a dummy load
trying to tune down to 475 kHz gave high currents and lost the IRF540
at 500 it seems to work okay.
If I can believe my power meter the output is well over 100W
at 6A 24V input never had that much output from this simple but genius design.
But the IRF540 can not handle this level and breaks down after 10seconds good that I have got some spares but it puzzles me how could I have used this in 2010 for WSPR without failure so long
WSPR having 2min. TX periods.
It is clear that this is still QRP in the MW bands. Only with exceptional propagation decodes are possible in USA. And propagation for the low bands have not been as good as a few years back.
The digital driver part 2 legs up IC's and ceramic 500kHz resonator are no longer used.
The K3 was and now the FLEX1500 is direct connected to the totem pole driver input of the QTX.
WE6GXR and others using 1kW 100% duty cycle. in a good TX antenna.
with a fb professional designed TX.
http://www.w1vd.com/137-500KWTX.html
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