yes there are much better signal generators out there, that frequency
doubler tuning circuit is for religious people only -- you need to be
able to believe, that it could work
73
KJ6UHN
Alex
On 7/11/2022 12:24 PM, Dave B via time-nuts wrote:
On 11/07/2022 08:30, time-nuts-requ...@lists.febo.co
Yes, we did,
and learned, that the device -- the ublox6 -- forgets the the program
very fast, thus we added one arduino, which loads the program into the
ublox at every new turn on. By using low output frequency -- 10kHz --
the jitter is low, at higher output frequency the jitter is getting
Noise in Physical Systems
Including 1,f Noise, Biological Systems and Membranes : 10th
International Conference, August 21-25, 1989, Budapest, Hungary
1990
https://www.google.com/books/edition/Noise_in_Physical_Systems/WyVbzgEACAAJ?hl=en
On 4/9/2022 11:35 AM, Lux, Jim wrote:
On 4/9/22 10:03 A
Hi Ulf,
do not give up so simple, often it could be repaired, what kind of GPS
receiver do you have?
73
KJ6UHN
Alex
On 3/11/2022 4:56 AM, Ulf Kylenfall via time-nuts wrote:
Greetings forum,
Since my GPS-receiver ceased operation recently, I need to purchasea new one.
Please suggest a suitable
Forwarded Message
Subject:Re: [time-nuts] Re: local WWVB ?
Date: Sat, 11 Dec 2021 09:57:49 -0800
From: Alex Pummer
To: Attila Kinali
Hi Attila,
actually there are some repeaters, which do not generate their own
carrier, but just receive and amplifying re
it is relative problem-less to rebroadcast withe orthogonal polarization
relative to the original vertical polarized signal and using a loop, not
higher than one meter above ground -- magnetic coupling only...' --
around your house, -- don't forget to change the polarization of the
antenna th
Using the DG8SAQ Vector Network Analyzer to identify an unknown component
https://www.youtube.com/watch?v=Ao653tz1kVE
actually it has a special program made for analyzing crystals
Greetings
and 73
KJ6UHN
Alex
On 3/1/2021 12:32 AM, Magnus Danielson wrote:
Hi,
On 2021-03-01 01:23, Attila K
at the time I grew up in Eastern Europe -- "communist time" -- they kept
he clocks using the line frequency as reference -- by counting the
periods during the day and week and for longer time for equal time
interval the "provided" equal number of line frequency periods, as
longer the time inter
actually you could transmit and receive on the same frequency if you
take care that they have different polarization. A small transmit loop
around -- vertical axis -- the building and very low power and receive
the wwvb normally with the ferrite roads with horizontal axis, the
transmission ou
Hi Perrier
https://www.y-ic.es/datasheet/3b/74F569SC.pdf will work
73
KJ6UHN
Alex
On 7/11/2020 3:00 PM, Perry Sandeen via time-nuts wrote:
Learned List,
On previous posts I was looking for a PDIP package 100 MHz decade divider.
Reading just the front of the data sheet I thought that the 74LS1
There was once upon the time a very good data/application-book from
Fairchild for TTL logic, they published many different modulo frequency
dividers with 50% duty-cycle for the "9316" which is the functional
equivalent grandfather for 74161 and therefore for the AC161 to.
For frequency division
Taka,
it was possible, to do without computer, although the computer is a very
big help particularly for routine works, but it is possible not just
trouble shoot but design, very complicated circuits to, and there are
out there areas where computers still do not help today, Bob Peasa even
cach
don't forget the oscillator is one amplifier with infinite gain on his
own frequency
73
KJ6UHN
Alex
On 3/1/2020 2:46 PM, Richard (Rick) Karlquist wrote:
On 3/1/2020 2:28 PM, John Moran, Scawby Design wrote:
My apologies if this is slightly off-topic, but it does concern
crystal oscillators
IMPROVING THE FREQUENCY STABILITY OF MICROWAVE OSCILLATORS BY
UTILIZING THE TEMPERATURE COMPENSATED DIFFERENCE FREQUENCY OF A
DUAL-MODE SAPPHIRE LOADED CAVITY RESONATOR
https://images.search.yahoo.com/yhs/search;_ylt=AwrUiqr58Fpe2kYAigIPxQt.;_ylu=X3oDMTByNWU4cGh1BGNvbG8DZ3ExBHBvcwMxBHZ0aWQD
in original -- Latin -- it means; take every tenth
73
KJ6UHN
Alex
On 2/25/2020 7:15 AM, Bob kb8tq via time-nuts wrote:
Hi
In the common vernacular “decimation” does indeed mean “just throw the rest
away”.
You can find papers where that *is* what’s being done with samples and that
term is
us
I got my German edition of T+S [16] for $120.- shipped to California,
but don't be surprised some of the medicament's made in Europe costing
50 times more here.
73
KJ6UHN
Alex
On 1/19/2020 5:30 PM, Charles Steinmetz wrote:
Gerhard wrote:
The idea was just to measure 1/f noise on my AF and R
the only problem with that CMOS freq. multiplying circuit's that the
threshold of the inputs has a thermal noise component = jitter [phase
noise]
73
KJ6UHN
Alex
On 1/19/2020 11:31 AM, Mark Haun wrote:
Hi Jim,
On Sun, 19 Jan 2020 10:35:42 -0800
jimlux wrote:
On 1/19/20 9:29 AM, Mark Haun w
there was one "zwischen basis-Schaltung" which has good noise properties
basically the basis and the emitter of a bipolar transistor is connected
to the two ends of a transformer's secondary winding , a tap on said
winding is grounded. Ulrich Rohde may could tell more about it, I have
seen arti
Hi Perrier,
I would like to see that circuit -- divide by 1.5 -- also, thank you in
advance
Alex
73
KJ6UHN
On 9/19/2019 5:03 AM, B Riches via time-nuts wrote:
Hi Perrier,
I would appreciate the circuit. Thank you.
73,
Bill, WA2DVUCape May
On Wednesday, September 18, 2019, 10:11:02
well, you have a point, the coax cable if it is ideal it will work as
somebody described earlier in that treed, but unfortunately life is
real, and therefore despite that the E and H field is mostly "inside of
the cable", but due to the cables loss particularly because braid has
resistance ther
Hi Richard,
may I ask you to send to me that Schematic?
thank you in advance
73
KJ6UHN Alex
On 4/24/2019 7:46 AM, RICHARD GOLDING via time-nuts wrote:
Many thanks to those who took the trouble to send me schematics of the Z3801a
PSU.
I'm pleased to report that, using, the schematic, I was a
yes he is wright, particularly your bird will grew out before the
reading settles to zero at zero DC current measurement condition, I
contacted Fluke they promised to send a special box for sending the
instrument to them, it was in 2017, but the box did not arrived yet, One
would expect a bit b
that is a relative low noise synthesizer
Programmed Test Sources PTS 160 Frequency Synthesizer
73
Alex
On 3/7/2019 11:04 AM, Richard (Rick) Karlquist wrote:
On 3/7/2019 8:56 AM, Didier Juges wrote:
The king of low close-in noise are the HP8662 (990MHz) and HP8663
(2GHz?)
by about 20d
I do not know, if the brake down voltage decreases if the electrolyte
capacitor is used well bellow the original rated voltage, but I know
from experience, that if you cautiously and slowly increase the voltage
across the capacitor it will work at higher than the rated voltage, but
with reduced
Hi Anders
look that
https://www.analog.com/media/ru/training-seminars/tutorials/MT-086.pdf
73
KJ6UHN Alex
On 2/1/2019 10:11 AM, Anders Wallin wrote:
Hi all, is there are rule-of-thumb or simple paper/presentation of how to
choose PLL-gains?
I have a phase-detector that gives out a slope of
There is a problem with most pre-amplifiers and also particularly with
anything up font of the sampling; to get good data the amplitude of the
sampled signal has to have relative high levels, comparable to
microphone output level -- up to 50mV -- if one wanted to use the sound
cart input. Addi
that address is incorrect: Website: www.EversetClocks.com
Alex
On 12/3/2018 6:20 PM, Paul Bicknell wrote:
Hi All
There is a 60 Khz frequency standard operating in the UK
So do the two signals interfere with each other?
Paul
-Original Message-
From: time-nuts [mailto:time-nuts-boun.
and what wold happen if you divide the 10MHz by 10 -- with any simple
counter chip -- and injection lock a 16MHz crystal oscillator with that
1MHz, since the jitter is not critical of course it does not hurt
if you make the 1MHz pulses narrow, you could use the micro-controller's
own oscil
by making a loop around the territory, on which you would like to
receive the signal, inside of that loop you will have a very decent
reception without using to high transmit power a 100' x 200' area could
be covered with 100mW, since the wave length of the used low
frequencies is multiple of
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