> Now to the negative part , noise floor from around 21MHz to well over 500MHz
> raised to a signal strength 5 to 6 across mid to upper HF / lower VHF to
> upper UHF with them switched on, otherwise my noise floor is Zero.
> Lower VHF to UHF SSB/FM low level signal work is now not possible when
> I have been using Rb oscillators as my standard for a while but would like
> to be able to have both a frequency as well as time standard which is
> synchronized to something outside my lab. I would like to have:
> Frequency stability at least as good as the Rb osc Time server which can be
Another connection from Time Nuts to incandescent light bulbs is the early
HP Wien bridge oscillators. They used the light bulb for amplitude
stabilization. This light bulb stabilized oscillator is what put the HP
company on the map.
There was a time when these oscillators where the best availabl
On Tue, Oct 11, 2011 at 6:17 PM, Peter Gottlieb wrote:
> I have been using Rb oscillators as my standard for a while but would like
> to be able to have both a frequency as well as time standard which is
> synchronized to something outside my lab. I would like to have:
>
> Frequency stability at
For some reason, the "No GPS" LED is back - although the GPS is
tracking 8 satellites in 3D mode and according to the TRAIM status the
timing error is below the alarm threshhold (alarm = 1300ns, current =
43ns) - I guess the uinit has it's own standards for the GPS quality,
and they are being viola
My apologies to the 'time-nuts'.
If you think about it, electricity generation is mostly 'fixed cost'. Only
the coal fired plants have a significant 'variable cost' factor.
Therefore, if 'fixed cost', the utilities need a relatively steady flow of
cash to fund their operations since there is n
For some reason, the "No GPS" LED is back - although the GPS is
tracking 8 satellites in 3D mode and according to the TRAIM status the
timing error is below the alarm threshhold (alarm = 1300ns, current =
43ns) - I guess the uinit has it's own standards for the GPS quality,
and they are being viola
I have been using Rb oscillators as my standard for a while but would like to be
able to have both a frequency as well as time standard which is synchronized to
something outside my lab. I would like to have:
Frequency stability at least as good as the Rb osc
Time server which can be accessed
Sorry Tom, (again!),
Just as significant is the radiation from compact fluorescent lamps, many
radiate strongly in the 50-60KHz region from their SMPSs. This has been the
reason for failure of several clocks I am aware of that are tuned to radiocode
transmissions on 60KHz.
John H.
On 12 Oct 2
Hi All,
Sorry Tom, worth a mention.
I replaced all of my down lights after my Kids wanted us to contribute
to lowering our carbon footprint. On the positive side, moving to LEDs
will provide savings around $107/year in electricity charges.
Now to the negative part , noise floor from around 21M
There is one angle that was not covered, but which is relevant (at least to
those of us using any LF or HF time receivers).
Over the weekend I bought my first LED bulb. It was on sale and I wanted to see
how it worked. On the package it gave a warning that it could interfere with HF
communic
Mmmm but halogens dont have a lot of life run at below the rated spec !
Alan G3NYK
- Original Message -
From: "Chris Albertson"
To: "Discussion of precise time and frequency measurement"
Sent: Tuesday, October 11, 2011 11:29 PM
Subject: Re: [time-nuts] the end of light bulbs as we know
Incandescent lamps also have the property of a cold resistance very much lower
than that at design voltage. Used in series with drills and bathroom fans this
gives a useful current surge at switch-on.
And the [time-nuts] connection? I use a torch bulb in series with the drive to
a dry cell powe
This thread is wonderful, nostalgic, technical, futuristic, and
appropriate for someone's list. But not time-nuts. Please stop
it now. Don't reply.
/tvb
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My Lava Lamps will be ok, if I can still get resistors. :)
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On Tue, Oct 11, 2011 at 3:23 PM, Neville Michie wrote:
> Incandescent light bulbs are very useful...
> ...It will be a pity to see them turn to unobtainium.
There is no plan for them to go away (at least in California), halogen
bulbs meet the new energy standards.
--
Chris Albertson
Redondo Bea
Incandescent light bulbs are very useful.
They are a high dissipation resistor with a lot of uses.
I have one in series with a bathroom ceiling fan, just kept plugging
smaller watt values in
until the fan was quiet enough but still fully functional.
I have one in series with a micro drill press
I now have my house converted over completely to LED bulbs... over 300 of them
(mostly PAR16/PAR20/PAR30/PAR38 bulbs)! At retail the cost would have been
over $15,000 dollars!!! Totally insane... I have a large closet totally
dedicated to light bulbs.When incandecents/halogens are no
If I recall, the firmware in the RFTGm collects about an hours worth of
position info and does an average to establish a self-survey. The next time
you cycle power, it will check the new position against the stored one and if
within 50 feet or so, it will use the stored position. That's probab
Hi
My experience with several VM's has been unrewarding in terms of drivers.
The driver lives on the main OS and may or may not pass through to the VM.
You seem to get a sub-set of the main OS devices in the VM...
Not a good thing for hardware hacking.
Bob
-Original Message-
From: time
Nice try. The stuff I fix is not my own, it is incoming with unknown
history. Once I fix things they generally stay fixed.
Think of my testing as a form of HASS... I don't like to get things
back which I repaired. If capacitors are weak, I would rather replace
them than play with
Peter Gottlieb nerd at verizon.net wrote:
99% of the time I just plug things in and see what happens.
I do fix a lot of stuff, though,
Hmmm,
I have to wonder if there is more than a casual cause and effect
relationship between those two statements.
I've seen a strong relationship between t
The Rx was defective - I just got the new one, hooked it up to my
little test rig anf the antenna, and it happily picked up satellites
and got a position fix.
Swapped it into the box, and found a TTL level copy of the RX data
stream from the encore on pin 2 of the interface connector, so hooked
th
Hmmm. 99% of the time I just plug things in and see what happens. That's what
they were designed to do. If something pops I fix it from there. If a fuse
keeps blowing I use the light bulb in series trick.
On older tube gear I do "softly" bring it up with the variable autotransformer
(Varia
Yeah, it's a bit of a pain - it's basically intended for people
running old XP apps that they don't want to (or can't) port to the
newer versions of Windows. The other thing to watch out for is that as
far as I'm aware all the hardware is emulated with a little hack to
allow USB passthough - so the
http://www.microsoft.com/windows/virtual-pc/download.aspx
I didn't install it, but it looks like if you have win 7 pro 64 bit, it
is a free download. You need to use IE and instal a validation plugin.
Half a gig of a download!
Now I suspect a 32bit driver might work with the VM. I have an ol
Thry are two different things - you're talking about the compatibity
mode built into the OS, but the other poster is talking about "Windows
XP mode" - which is basically a copy of XP running inside a Virtual PC
VM that's available as a download for the "business" variants of Win 7
(which are, not c
On my win7 pro 64 bit systems, there was nothing to download. It is
already in the OS.
Use windows explorer, right click on executable, select properties, then
comparability. Options go as far back as win95.
The feature never really seemed to be essential. The 32 bit emulator
always worked.
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