Hello Marco,
Sunday, April 16, 2017
A very happy Easter to you too, Marco. From myself and my FET's alive
and switching, and from those in the great recycling bin in the sky! I
hope your FET's survived the evening and live on to bravely go where
no FET has gone before.
I am amazed by pretty much everything Stefan does, I am hope he has
some financial backing, just keeping him in copper wire and toroids
looks like a job fro a wealthy man! Amazing stuff on VLF, simply
amazing.
All the best Marco.
> Best wishes to all the group.
> A special one to Chris and his brave FEts ;-)
> Tonite while the QRP TX is on on MF, a couple of proud FET will
> challenge for the last time on my QRO TX:
> will apply low DC power and then increase sloooooooooowly till the
> standard level monitoring everything.
> If also this last trial will produce smoke instead of RF power will try
> an H Bridge or half bridge Decca style!
> I'm just concerned how to find place for the inductor.. the box is a
> bit crowded ;-) but with the low required Q probably can do it with a
> low permability ferrite (I have in the junk an FT240-61 that should be
> a reasonable compromise).
> By the way, amazed from the picture of the huge stack of toroids used
> from Stefan for the fine tuning!
> 73 de Marco, IK1HSS
--
Best regards,
Chris mailto:[email protected]
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