I've started playing with a spectrum analyser, this is what I
have so far.
There's a bit of scruff round the signal and the second and third
harmonics are about -60 dB which seems pretty good, better than my
Pixie.
And at this stage L513 had 9 turns instead of 10.
At present I'm using a crude 38 dB attenuator and was running
about 1W.? I've a 10W 20dB attenuator coming and that should allow
me to run my QMX at full power.
Not used a spectrum analyser before so a bit of a learning
experience, there must be a way of getting a screen shot onto a SD
card.
?And I have some Zeners, 1N4756A.? Hans, I could send you a
couple if it helps.
I'm taking my time over this, not applied more than 10V to my 12V
QMX, that gives 2 to 2.5W, astonishing how far that gets.
Chris, G5CTH
