Ok some of you have had the same problems I've had so I'll tell you what
i've done to my 38S. and the progress I think I'm making.
first thing is to put the I.C. in the right way the first time and all the
time ! I too in a blond moment put the hc240 in backwards, the first thing
was the voltage regular starts to over heat, don't key the rig like I did.
It just causes problem and won't solve a thing trust me on this one.
I replaced the hc240, the 4066, and all the 914's (I don't think the 914's
were bad but there cheep so what the heck) I should point out I did not
have hardly any power out put but after doing this I have RF. now I could
not get the rig to hear thunder...
SO back to the thinking mode...I checked the voltages they seemed ok,
except for pin 12 and 13 on the 4066 and pin 1 on the hc240 (they were too
high about 2.2volts too high) any ways I have checked and rechecked can't
find anything wrong that would cause this so it's still unknown. the
receiver was still as deaf as my great great great grandfather. I then
removed 1 turn off T-1 thats the one with 2 windings) put it back in and
now it can hear but only if it is a really loud sig.(rock concert style)
I still get only one peek on the tuning cap TC-1. I suspect that is due to
TR-1. &%$#@*% broke one coil that goes to my grid dip meter. care to guess
which one ? 3 guess and the first 2 won't count....Hey if you can't figure
this one out don't play the lottery cause your sure to loose your money. So
it looks like I'll leave this up to one of you guys that have a grid dip.
the plan was to wind another core place 175-180 pf cap across it and tune
it to 10.115 mhz with a good dip on the meter. then post it here for all to
see. (the turn count of course.) then add the link 2 turns and see if that
changes anything...I don't think it will but might as well check and see
uh...when I wind a core I pull the wire tight as I go along so please if
you do this, let us know if you pull your wire tight too or if your just a
loose winding kind of guy. now using my swan swr-1 meter (simple CB style
kind of meter) it has a power analog scale on the left side and a SWR scale
on the right side. I see a reading of approx 7-10 on the power side. It
means nothing other than rf is getting into the damn thing. I never have
understood what that side of the meter was for other then to set the needle
to 100 then read the SWR on the rightside. Any ways with the knob set to
the full clockwise position I get the 7-10 reading about 1/4 of the scale
so like I said the reading means nothing other then an indication that rf
is coming out of the rig. So if any of you are having a time getting your
38S to work or if you attempted to smoke test it and managed to do just
that (send smoke into the clouds like me) I hope this helps...If you ran
into other problems let me know and the others know .....someone eles maybe
trying to solve it too...it would be a shame to keep it to yourself...we
won't laugh I swear....he he he. Next time I build something I'm going to
be prepared rabitt's foot, four leaf clover, salt over left shoulder, see
my witch doctor, avoid black cats, say my prayers, and PAY ATTENTION.
73's and good luck
Duane AB4BE
http://www.flinet.com/~duane
duane@flinet.com
ab4be@amsat.org
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