On 01/22/2011 04:19 AM, paul swed wrote:
Actually there is a paper by Arthur Molenkamp (Spelling wrong) thats quite
detailed and he seems to have done the same thing I am. You do not need the
heater to start the RB lamp.
I have found 2 things this evening on the FRS-c.
The oscillator is
Hello, TimeNutters-
Silicon Labs
[1]http://www.silabs.com/products/clocksoscillators/pages/default.aspx
offers a large assortment of various types of oscillator
chips: XO, VCXO, programmable XO, clock generators,
clock distribution chips, Jitter Attenuators, Clock cleaners,
Surfboards? From Alltronics?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Michael Baker
Sent: Saturday, January 22, 2011 8:04 AM
To: time-nuts@febo.com
Subject: [time-nuts] Silicon Labs series of oscillators...
Hello,
depending on the complexity, I use one of 3 approaches:
1) Premade adapter (aka surfboard) which adapts the package to
something with pins on 0.1 spacing. These can be bought various
places or made with traditional methods at home.
2) Quick home made version of above. Usually double sided pcb
I guess this sad saga boils down to my question for the
Time-Nutters List: How do you deal with breadboarding
when it comes to parts that are ONLY available in
surface-mount configuration (and are just at the size
limit for hand soldering?
you lay out little adapter boards
Hi:
Links to documents:
* Preliminary Introduction
* Brochure
* User's Guide
* Patent
http://www.prc68.com/I/FTS4060.shtml#CASC
--
Have Fun,
Brooke Clarke
http://www.PRC68.com
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Some time back, I posted my experiments with a cheap Chinese made GPS
jammer and Z3801. Since then, I have been able to check it on a
spectrum analyzer. It sweeps over about 30 MHz centered on GPS L1
frequency. Power looks like about -3 dbM. If I turn it on within 30
feet of the antenna, the Z3801
With 2500 V ESD it is difficult to destroy this one IMHO. Any chance you
inverted the chip connections?
I had problem with a Si570 and that was due to bad solder connection into those
recessed places on the chip!
The only time Static discharge blew something was when a spark jumped from my
On 1/22/2011 6:04 AM, Michael Baker wrote:
I have a need for a 110 MHz VCXO in a 1.8GHz to 7.5GHz
tracking generator I am building for my Tek 494 spectrum
analyzer. I bought a pair of Silicon Labs 110 MHz VCXO
chips for less than $25 for the pair from Cramer
Distributors.
Is your work area grounded to the soldering iron tip. If not the tip can
generate a discharge.
Though as someone commented unlikely.
The fact that 2 are bad does point to a miscount on the pins potentially.
My trick on one offs as most of my projects are and at the old hand solder
limit is a
On 01/22/2011 07:03 PM, paul swed wrote:
Interesting
Took the oscillator board apart last night and found C11 has a cold solder
joint.
That explains it.
Its the variable cap that tunes the heater. Have not re-soldered it
yet as I am having trouble getting enough heat in the area even with a
I use a stereozoom microscope in the soldering process and for inspection.
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Paul,
The LED thing is interesting. Are you sure you were not just seeing a
reflection
of some sort ?
BillWB6BNQ
paul swed wrote:
Other thing, measuring ignition time. On the first run just for the heck of
it I flashed a led light into the ampule and it ignited instantly. So
perhaps
Hi
Neon bulbs do the same thing. The ignition voltage is light sensitive. If you
see a place they are being used as a voltage reference, they get painted black.
Bob
On Jan 22, 2011, at 6:02 PM, WB6BNQ wrote:
Paul,
The LED thing is interesting. Are you sure you were not just seeing a
Hello to the group.
Indeed I did try the light several times and it does seem to ignite the RB.
But not always.
So thats an area to look at. I seemed to remember neon bulbs could be
triggered. I suppose thats was why I did it for the heck of it.
However Magnus has confirmed that my little silver
On Jan 21, 2011, at 4:52 PM, Jerry wrote:
I would like to thank everyone on the list who helped me get through
the problems with my 58503 and the suggestions that resulted in my
[]
getting a Trimble Tbolt which is now up and working. Someone a bit
back was looking for a cheap antenna and
It is a bit low on gain.
I'm going to check Excess Solutions next time I'm there to see if they
have any more HAG-240 antennas. Really nice marine grade and high enough
gain. I promised not to wipe them out if they have more since I got a
decent stash.
On 1/22/2011 7:31 PM, Kevin Rosenberg
On 01/22/2011 11:31 PM, paul swed wrote:
Well pretty interesting late afternoon.
The oscillator works but C-11 definitely is troubled. Additionally a key
element is an effective ground. Bridge the low side of the ampule to a
better ground and the oscillator seems to reliably start.
I've run my Z3815A with various programs including Z38xx. They all work
well. I like the Z38xx the best because of its extensive reporting including
ADEV etc. The software from Murray Greenman is pretty good too. Are you sure
the unit itself is OK?
AFAIK there's no official manual available. The
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