I have a ATT RFG-M-RB not Lucent made around 1997.
It is different because it does not have the usual Rubidium oscillator in it.
It actually has two stacked boards and the lower one is the Rubidium Oscillator.
The only thing in the can which snaps off is the physics package.
I finally tracked
Ok, lets get real here.
Temperature variations, could cause a phase shift but a very very slow one, the
degree would depend on the
Q of the filter, temperature coefficient of the crystal, and capacitor and how
well it is isolated from turbulent air.
I am not new to the game of making
OOPS. what was I thinking,
I was trying to minimize the number of transformers and
slipped up. The inputs should be in opposite phase and
output in parallel with a bifiler wound toroid transformer to
provide balanced outputs, one to the crystal and one to the
neutralizing (phasing) capacitor.
Push-Push Jfet amplifier with parallel inputs and a Toroid output
transformer, no secondary along with a
simple filter using a 10 MHz series resonate crystal connected to one drain and
an adjustable capacitor connected
to the other would work fine. You connect the other ends of the two
A lot of devices have a low output impedance so that the signal can be split
using a TEE adapter with little loss or need for a distribution amplifier.
However, the cables must be impedance matched at far end, scope input, to
prevent reflections which are the source of the ringing.
You can
The idea behind GPS spoofing is that one or several surface antennas and
sources could be set up in such a way that they would produce believable
position data that would take a vessel off course. The problem with this
concept is that the person in charge of the GPS spoofing hardware has to
You are correct, however, I suppose you are using a loop antenna with a
relatively high Q.
The antenna gain is related to the Q when you have an antenna with a diameter
much less than
a wavelength.
With a Q of 100 you would have a bandwidth of .6 kHz, If you go to say
20.kHz you would not
I know I am not one of the good-ole-boys here but I'd say go 100% SDR with
your PC without an external
A/D converter. Ok, how would you do this? You use under sampling.
Many A/D converter systems use a sample and hold before the A/D converter.
If you do the same before your sound card (your
Just a month ago I found out that Norman Ramsey had died.
I met and talked with him about 20 some odd years ago before he recieved the
Nobel Prize for Physics.
He talked about the first Magentron that he ever saw which was a secret weapon
brought to
the US to be tested and worked with to make
