George,
you can replace the input transformer with the mini-circuits model
T2-613-1-KK81 or T662-KK81 for under 2 Dollars. The inductors L1 and L3 are
standards value you can find smd or standard on ebay. About L4 you can put in
place a standard 4.7uH value increasing the series capacitor for
Looks like a clock to divide by 1000 and generate 59.99 Hz
A computer video card or monitor?
Some piece of Video gear?
A UPS?
A solar system power inverter?
A generator control panel?
--
Joe Leikhim
Leikhim and Associates
Communications Consultants
Oviedo, Florida
jleik...@leikhim.com
407-
7.6 Hz is very close to the Schumann resonance fundamental.
Don
Doug Ronald
> I'm working on my WWVB BPSK receiver and am receiving a carrier, 10 dB
> stronger than WWVB in Sunnyvale, California, quite stable, on the air 24/7
> at a frequency of 59.99240 kHz. I have researched on Internet what it
Paul wrote:
Lots of noise on the ti/pps and you can see EFC is rising all the
time. I will say in the past it had been a steady rise now there is
a wave that might mean its slowing down a bit. But this all looks
rattier then I would believe.
According to the plot, the oscillator is still a
Maybe it's leakage from another time-nut's experiment in the
neighborhood, or some commercial equipment. There's probably lots of
stuff going on in that area. It's not necessarily a broadcast
carrier, but just a frequency that happens to be generated somewhere
and getting out big enough - maybe
Hello to the group.
Running the Lucent GPSDO and its been on for 5 days now.
This is a capture from the z3811 program.
I did not think I could get this graph out to time nuts. The actual files
are quite large. However a .png makes it pretty compact.
My question Is this normal? I did not expect th
Hi Perrier,
Thanks, I would like the documents.
I have a HP 3586B and its sensitivity is right on for the 20 Hz and 400 Hz
bands but is about 30 dB low for the 3100 Hz band.
I have manuals but have not found the fault. Do you have suggestions?
Regards,
Bill
br...@otelco.net
-Original Me
Doug
A classical tv anyplace? 4th harmonic of the flyback was a common issue.
My best guess and highly doubtful.
Regards
Paul
WB8TSL
On Thu, Nov 13, 2014 at 6:23 PM, Doug Ronald wrote:
> I'm working on my WWVB BPSK receiver and am receiving a carrier, 10 dB
> stronger than WWVB in Sunnyvale, Cal
Bob the actual pictures and files are large so here is the left screen and
right screen from the z3811 program. Pretty easy to guess whats in the
middle.
Lots of noise on the ti/pps and you can see EFC is rising all the time.
I will say in the past it had been a steady rise now there is a wave that
Hello Nigel,
Finally I got enough courage and removed the OCXO, you know what kind of
task it is.. Fortunately I didn't spoiled the PCB so I'll install 2 smb
connectors in the provided places, I don't want to return there if I
need to change the oscillator.
Well, the oscillator is ok, this is
I'm working on my WWVB BPSK receiver and am receiving a carrier, 10 dB
stronger than WWVB in Sunnyvale, California, quite stable, on the air 24/7
at a frequency of 59.99240 kHz. I have researched on Internet what it might
be, with no results. I have turned off all switch mode power supplies at my
l
Hi
How much is your unit moving?
Bob
> On Nov 13, 2014, at 1:50 PM, paul swed wrote:
>
> On the older units that used a RB to control an Xtal. They created a mix of
> 5 Mhz +10 Mhz and that produced 15 out that hit an amplifier to drive a 12
> way splitter.
> I think I reverse engineered the c
On the older units that used a RB to control an Xtal. They created a mix of
5 Mhz +10 Mhz and that produced 15 out that hit an amplifier to drive a 12
way splitter.
I think I reverse engineered the circuit. Its on paper and filed. Oh that
ends this discussion.
Anyhow it was not hard to figure out.
Is that the "A Two Diode Frequency Doubler" article by John Pivnichny?
DaveD
On 11/12/2014 10:47 PM, Don Latham wrote:
I digitized the first 2011 article to hand, the one in Jan-Feb; it's a smaller
article, and not as elegant as the later one. Anyone interested can email me
off-list. You're all
Hi Skip,
Seeing as how you have spent some time poking around inside FE-5680s
maybe you might be able to help with a problem I have with one. A while
back I purchased two 5380As that where reputed to be new they are marked
with "10MHZ OPTION 57" and would seem to match you description of the
Luciano,
This looks very nice. However, the inductors are
custom made. It would be nice to have a
off the shelf parts solution so it can be made
easily.
Any ideas ?
-George, N2FGX
On 11/13/2014 08:39 AM, tim...@timeok.it wrote:
> Hi all,
>
> I can suggest a different solution I have tested to ha
Hi all,
I can suggest a different solution I have tested to have some important
improvement. First, the lower phase shift sensitivity with the use of a low
pass filter in conjunction with two notch filters instead the high Q band pass
filter, second the unity gain to avoid a 13/20 dB amplif
Hi Ignacio
I'm sure removing the oscillator would make your faultfinding much more
straightforward.
When I removed mine I started out quite convinced I wouldn't be able to do
it, even with the solder mostly removed from around the pins they were
obviously quite a tight fit and all I had a
I would like a copy of the article please.
cheers, Graham ve3gtc planoph...@aei.ca
On 2014-11-13 00:47, Don Latham wrote:
I digitized the first 2011 article to hand, the one in Jan-Feb; it's a smaller
article, and not as elegant as the later one. Anyone interested can email me
off-list. You'r
Hi Paul,
I haven't used the Starloc II, so can't offer any direct help/advice, but
I did find manuals for the Starloc II and Starloc II plus when searching
for Starloc-Lite data a few years ago.
As always I hoarded what I found, which makes this your lucky day rather
than mine as I neve
We are using Wenzel with two filters see attached if it will pass. 20 Mhz
is down more than 60 db and 5 MHz 55. Distribution Amp takes care of the
rest.
Bert Kehren
In a message dated 11/12/2014 8:13:33 P.M. Eastern Standard Time,
dgmin...@mediacombb.net writes:
Just a few days ago,
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