Dr Ronald Stiffler SEC technology

[mikrovolt]

Itsu, Gu and all, great job looking at SEC 6.5 Mhz 6/24/11 Stiffler youtube video notice the in between harmonics
and a redistribution in amplitude.  Possibly a doubler and diode action ?

I took a few screen captures of Dr. Stiffler using spectrum analyzer and I am listing the following data.
not exact but fairly close as tests can very slightly. atten 10 db, center 25 Mhz, span 50 Mhz, 5 Mhz/div
(6.5, -17db) (13.13,-60db) (19.75,-45db) (26.25,-38db) (32.75, -45db) (39.38,-52db) (45.88,--50db)
another frequency series taken from my notes: antenna on spec analyzer
(6.8 ) (13.6 ) (20.4 ) (27.2 ) (34 ) (40.79) (47.6)

your harmonics agree with standard
http://mustcalculate.com/electronics/harmonics.php?f=13.494599M

[erfandl]

testing 13.56 mhz crystal circuit with RFID 13.56 MHZ external antenna

[itsu]

Gyula,

you are a wizzard with transistors, thats for sure, and its good to show us (refresh) on the workings of one
as i better understand the processe that makes the oscillator work, hopefully.

I will make the BF869 to oscillate eventually, its like what TK said:
"Amplifiers that oscillate, and oscillators that amplify".




Nick,

even with known components its hard enough to get this (tank circuit) oscillator to work, so without
knowing you use the correct valued components its probably impossible.
Try more different values for the cap and see if it starts oscillating on its own, you must be almost there.

I have asked my local post office to start an investigation on the send parts, so waiting for their respons.

Itsu 

[Ed morbus]

13.5 MHz Crystal can you find in the old wireless microsoft mouse

[NickZ]

   Ed:   Thanks for the tip. I just opened up one of my old wireless mouse, and sure enough, there's the 13.5MHz crystal inside.   I'll be pulling it out ASAP.    Thanks again. Great tip.

   EDIT: After opening up and removing the mouse circuit board, I found not one, but two 13.5MHz crystals. My lucky day... 
Now I have the right component for the job. And I had it all along. Sweet!!!  There is also a small black inductor, with a black dot on top. What value might that be?  1000uH, perhaps.