also effect the Dual Mixer and the Austron circuit.
Does any one know Scot Mc Grath scmcgrath? He ordered after my mentioning
of attic clean out $ 125 of HP5061A items like manual, I shipped it, did get
delivery confirmation, contacted him repeatedly, no response.Does any one
know him? Ha
Hi Chuck
I'd see you on my waterfall display. A flexradio is a wonderful thing. The
Icom 7x00'es would also see the energy and display it.
73 - Scott N1JIN
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Chuck Harris
Sender: time-nuts-boun...@febo.com
Date: Fri, 25
Hi Chuck,
Serious contesters have directional antennas and most of the new contest
quality rigs have FFT spectrum displays and the ability to record several Mhz
of spectrum directly to disk for later analysis.
The old stereotype of unsophsticated home brewed gear is now a subculture of
t
I'd be interested in the electron multiplier and manual
--Original Message--
From: ewkeh...@aol.com
Sender: time-nuts-boun...@febo.com
To: time-nuts@febo.com
ReplyTo: Discussion of precise time and frequency measurement
Subject: [time-nuts] HP 5061
Sent: Feb 25, 2011 19:53
Cleaning out an
Speaking as a ham, if this is tried you will have hams complaining and DF'ing
the offending signal.
Chuck, you are correct in that no one but the hams care but the reason behind
this is that policing the ham bands has been delegated to the hams and
specifically certified 'Official Observers
Trouble is those 'hams with their effing toy radios' have pioneered just about
every 'business' service being sold today.
Especially true since US business has essentially abandoned industrial
research and 'innovative design' in too many cases is copying a reference
design from a data sheet
Why not just use the output from the 5370B - it already has the support
circuitry and a buffered output.
Back in my pre-time nut days my 5345 was both counter and lab reference
standard the 10.mhz output went to a D/A so all my instruments were referenced
to the 10811 in the 5345
Scott
Sent f
Ah now from time nuttery to horology. There are those of us who tinker with
analog clocks as well...
Generally we 'beat' clocks against 'standard' clocks or more recently a pc
application with a microphone over long periods of time generally at least a
week and commonly a month.
Scott
Sent fro
Now that we are discussing how to restore Rb lamps.
Has anyone given any thought to refilling or refluxing the Cs in depleted Cs
tubes?
Obviously opening would require high vaccum equipment - which is a totally
separate category of nut (Or is it?)
Scott
Scott
Sent from my Verizon Wireless B
The counter argument is with a heavyweight database - the size of the datastore
increases dramatically and there is no guarantee that the tool will be around
in 10 years to read the data.
All SQL databases use ASCII format CSV to load and dump the data from their
internal data representation.
Have you thought of using RRD (Round Robin Database).
RRD is a CSV format which stores value vs time and is generally used for
archiving network performance data which is generally kept for years. This
format has the advantage of compactness and arbitrary x y scaling.
MRTG (Multi-Router Traffi
My 0.02
These SAME maps are being used in E911 and other GIS systems so the poor
workmanship which is so obvious here has the potential to put lives in danger.
Most of the emergency response trucks up here have GPS systems with these maps
onboard - not a problem for locals but if we needed outs
The companies are
Teleglobe and Navteq
Garmin uses Navteq cartography as does Ford for their onboard Nav systems
A couple of years ago there was a huge controversy about a GPS hardware vendor
buying Teleglobe. Thereby leaving no competition in the digital cartography
market
There always seem
Because the Rockwell-Collins HF80 has sensitivity and selectivity which are
avaialble only in Ham gear costing 7000+ definitely not in the 'inexpensive'
category, it's transmit signal is also far cleaner than most synthesized HF
Rigs.
So it makes sense to upgrade the reference oscillator to
Because of DJVU's limited support and links to Russian malware/Warez sites.
If I see a file with djvu encoding I drop it in the recycle bin without opening
as a result of infosec day job.
Scott
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: "K. Szeker"
Sender: time-n
Professional cameras have a integrated VITC generator which in addition to the
time add the frame index to the time code which allows for creation of frame
level Edit Decision Lists.
Consumer cameras cheat and synthesize time. If you run a consumer tape through
a professional system you will n
Thanks for update on current LTC usage!.
In the studios I worked in in college with the old type-c decks we did use
IRIG-B but even then everyone was moving to VITC. As editing was moving away
from the razor blade and tape era to deck to deck on U-Matic decks!
Scott
Sent from my Verizon Wire
When audio/video time code is specified if its on a audio track its called LTC
or Longitudinal Time Code and is generally IRIG-B, This is very uncommon
these days as it went out of common use about the time 1" reel to reel was
discontinued.
Most common today on NTSC is VITC or vertical interv
And on that note recall that the TBolt is a 'Disciplined' oscillator...
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Rix Seacord
Sender: time-nuts-boun...@febo.com
Date: Sat, 04 Dec 2010 17:47:33
To: Discussion of precise time and frequency measurement
Reply-To: Disc
Btw the telco 48 volt supply is in reality -48 ie positive ground system. So
be careful with grounding esp in common with other gear
Scott
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Hal Murray
Sender: time-nuts-boun...@febo.com
Date: Tue, 30 Nov 2010 22:38:18
To
I think we are getting precision and accuracy confused,
And they are quite different, In the time-nut world we use them as synonyms,
In reality its possible to have a precise measurement which is not accurate
(think instrument with bad timebase it's repeatable and reads out to a high
degre
The Phrack article's jammer attacks the offset frequencies.
Phrack.org/issues.html?issue=60&id=13
This article shows just how vulnerable L1 GPS is
Scott
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Magnus Danielson
Sender: time-nuts-boun...@febo.com
Date: Tue, 23 N
John
Civillian GPS is extremely susceptible to jamming and interference. Which is
why the LORAN shutdown puts the entire transportation infrastructure at risk.
Your jammer is probably derived from the one described in Phrack magazine where
the theory was extensively discussed.
But in the rea
Initial suggestion would give muzzle velocity only - need coffee before
commenting
A piezo detector bonded to the plate would give time of impact. I'm
interested in how you would compute group size
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-Original Message-
From: scmcgr...@gmail.com
Why not purchase one of the existing ballistic chronographs and upgrade the
time base?
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Bob Camp
Sender: time-nuts-boun...@febo.com
Date: Mon, 1 Nov 2010 07:49:06
To: Discussion of precise time and frequency measurement
Yes I do have the manual - I also travel to all corners of the known universe
and if I'm home I might be there for 24-48 hours. I finally got it scanned
and sent a copy to chuck. I overestimated my ability to scan and return the
manual in a timely fashion.
I also have paid for and never take
Dick
I'd like to buy your antenna if not already sold I've restored one of these
receivers and was about to build antenna!
Scott
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: Dick Moore
Sender: time-nuts-boun...@febo.com
Date: Sat, 2 Oct 2010 15:22:18
To:
Reply-To
I'd like to buy your antenna if not already taken
Scott
Sent from my Verizon Wireless BlackBerry
-Original Message-
From: "Alan Melia"
Sender: time-nuts-boun...@febo.com
Date: Sat, 2 Oct 2010 23:40:52
To: Discussion of precise time and frequency measurement
Reply-To: Discussion of preci
If you need that kind of timing accuracy in the absence of GPS then Cs is
probably the only answer. Dark fiber would also work but the infrastructure
and fiber leasing costs would probably be much more expensive than local Cs
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-Original Message-
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