Grupa: Administrator 
Lokalizacja: Kłodzko JO80IK06AO
Posty: 45503
#4640957
Od: 2013-10-18
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At 16:49 2019-09-03, Eddy Jespers via Moon wrote:
Today the PA got re-installed again at the 1296 moon beacon. We got
several suggestions on the mods, following modifications have been
done to the W6PQL PA . The output board has been glued to the copper
spreader using Silver Epoxy ( CW2400 ) Soldering the components back
to a new board has been done using Pb , Sn , Ag solder ( 2% silver )
A new MRF13750H has been soldered to the heat spreader 4 output
capacitors in parallel are on the output mounted vertically VDD is
now at 40 VDC output power is around 400 watt. We cross our fingers
and hopefully these modifications will hold.
ON7UN
_________________
73! Stanisław SP6MLK
Kłodzko JO80IK06AO
http://ra-ukf.iq24.pl/default.asp
http://www.ukf-te.iq24.pl/default.asp
Przemiennik SR6DKL 439.4750 MHz / 94,8 Hz |
