, yet the individual tools are
approachable, so you can take it a step at a time. While I'll do stuff at the
command line on Linux systems, I'll use the tools Xcode provides for me when
I'm on the Mac.
73--
Bob K6RTM
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K6RTM
--
Message: 1
Date: Sat, 8 Dec 2012 21:30:06 -0700
From: Joseph Gray jg...@zianet.com
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: [time-nuts] For Arduino lovers and haters
Message
sells one that's 5V/2A
for under $10.
Or you can bypass some of the protection components and connect your +5 supply
to TP1 and TP2.
Running mine from a solid power source the only problems I've had are with my
own crummy code...
Bob K6RTM
--
Message: 5
Date
The CSAC presentation from Symmetricom is fabulous -- I'll wait for the $300
version before I start a group buy...
Not to scratch yet again at a still festering wound, but also on the agenda was
a summary from FAA on Lightsquared:
ten remaining.
73,
Bob K6RTM
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Tymserve 2100...
Bob K6RTM
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and follow the instructions there.
One of the posters to the sci.electronics.design newsgroup (remember
newsgroups?) posted a PDF scan of the Efratom FRS manual, including schematics.
3mb, if there is interest in it, someone point me to a place to upload it.
bob k6rtm
___
time
I've uploaded the Efratom FRS manual to the Recent_Uploads section of ko4bb's
site.
bob k6rtm
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to write, and once you write
it, you never, ever want to look at it again.
Well, I guess it is interesting in its own pathological way...
73 bob k6rtm
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. The idea is to check/trim it with a
(non-portable) Thunderbolt and then carry it to where it's needed.
Are you proposing to use the rubidium to provide a reference until the tbolt
acquires lock?
73 bob k6rtm
--
Message: 2
Date: Fri, 22 Apr 2011 16:48:07 +0100 (BST
) standard, but
haven't done that yet.
My real RF sweeper is a boat anchor, an old 8660C, which was incredibly cheap
by the pound when I got it...
I paid around $200 for the 3314A on the usual auction site two or three years
ago; the current batch listed seem high.
bob k6rtm
!
bob k6rtm in sunny silicon valley
--
Message: 6
Date: Mon, 4 Apr 2011 11:50:55 -0500
From: msproul mspr...@suddenlink.net
To: time-nuts@febo.com
Subject: [time-nuts] Tbolt temperature question
Message-ID: p06240800c9bf8833d60d@[192.168.2.100]
Content-Type: text
Larry--
I use a +12 volt linear supply (an open-frame leftover) with a 7805 for the +5
rail. For -12, I use a 2 watt isolated dc-dc converter (leftover from another
project).
As others have stated, the +12 rail seems to be the noise sensitive one.
73 bob k6rtm in silicon valley
Apropos of Chris complaining about possible lightning damage, a chap on *bay is
selling a bunch of these
at $30 each plus $15 for shipping.
No connection with the seller other than being a satisfied customer.
--bob k6rtm in sunny silicon valley
Okay, I'll bite -- what are the changes in the new Lady Heather 3.0 Beta dated
5 Jan?
bob k6rtm in silicon valley -- looking for grain of wheat lamps for an hp 8660C
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the 58535A comprising:
an input narrowband (L1) filter feeding a low-noise gain block,
the gain block feeding a splitter, and
each output leg of the splitter having its own narrow band (L1) filter followed
by a pad to improve isolation/return loss.
73 bob k6rtm in not yet raining silicon valley
in Florida, but it only takes one...
73 bob k6rtm in not yet raining silicon valley
--
Message: 7
Date: Thu, 30 Dec 2010 15:25:46 -0800
From: Chris Albertson albertson.ch...@gmail.com
Subject: [time-nuts] GPS Antenna
To: Discussion of precise time and frequency
for under $100, and a thunderbolt for about the same, or less if
you're lucky.
Then again, your own cesium standard might be nice... Don't know how it's going
to interact with the Henry 4K in the corner of the room, but that's what makes
these hobbies fun, right?
73 bob k6rtm in not yet raining
on scribd.com
for free download. It is 543 pages in length.
It is a pure pdf file, not a scanned copy.
Stuart
Los Angeles, CA
-
You need a facebook account or a free scribd account to download the pdf.
73 bob k6rtm
___
time-nuts
to measure wide bw signals, 20 MHz or
wider (such as 802.11g, 802.11n), or hoppers (bluetooth?) you have to throw it
into a mode where it only does high-side mixing.
73 bob k6rtm
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assistance, or
listings of the code (if they exist) would be appreciated.
73 bob k6rtm
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and follow the instructions there.
The last two steerable dishes at Onizuka AFB (The Blue Cube) in Silicon Valley
are being disassembled.
One of those local landmarks, highway 237 at Mathilda.
Did anyone see them listed on eBay?
cheers--
Bob Martin K6RTM
___
time-nuts mailing
display
or
-- a command to show what command-line options to use on LH startup to get the
current display.
Not earthshaking, but would be nice to have.
And my continued thanks to all who have contributed to LH, and to this list.
cheers--
bob martin k6rtm
Rick--
Sign me up for one. I'll even save you the postage!
Bob K6RTM (down the street)
--
Message: 2
Date: Sun, 14 Nov 2010 21:25:59 -0800
From: Richard (Rick) Karlquist rich...@karlquist.com
Subject: [time-nuts] 10.23 MHz SC cut 10811 compatible crystals
down the street,
Rick N6RK, who deserves at least a 16 based on his work, and Warren who has
earned a similar number based on helping (and educating) others.
respectfully submitted,
bob k6rtm in drizzly silicon valley
--
Message: 4
Date: Sun, 24 Oct 2010 15:53:37
Awww... Aggravation? Don't you mean challenge?
And taming a CS reference is a stepping-stone to your own H maser, right?
(I'm still at the tbolt - Rubidium stage of time-nuttiness, and having a lot of
fun, thanks to a bunch of folks on this list.)
bob K6RTM in sunny silicon valley
and feedline to worry about.
73 bob k6rtm
--
Message: 3
Date: Sun, 26 Sep 2010 15:56:47 -0400
From: Heathkid heath...@heathkid.com
Subject: Re: [time-nuts] DS1620 Variants in the Thunderbolt
To: Discussion of precise time and frequency measurement
time-nuts
) stateful firewall such as in a stand-alone router or switch, in
addition to the Windows firewall. (a different approach is to allow ssh or
other secure tunnel into the box and use a tool such as VNC).
Have fun! There's a wealth of information (and opinion) in the archives.
73 Bob K6RTM
for, and now I know!
He was very happy when his daughter brought home someone who knew what vacuum
tubes were, even if he did think that the RF work I did as a ham, even the 144
and 440 MHz stuff, was still practically DC...
Bob K6RTM
--
Message: 2
Date: Mon, 20
Not completely OT, as stable and accurate timebases are very useful in
microwave systems...
What's the proper hardware to use for connecting WR-90 (10GHz) waveguide
sections? I figure 8-32 brass or stainless, avoiding anything magnetic.
Bob K6RTM in Silicon Valley
into making me a steampunk-themed case, something like rosewood with
brass corners and detailing...
Cheers and 73 -- Bob K6RTM in sunny silicon valley
On Sep 16, 2010, at 2:51 AM, d.sei...@comcast.net wrote:
I got one of the ebay LPRO-101s about 6 months ago and played with it for a
while
machine working, one of the things I want to go back and
stock up on are Tek 5xx prototyping kits. The single-width kits are rare enough
these days (and expensive), but the double-width ones are pure unobtanium!
Bob K6RTM
On Sep 16, 2010, at 2:51 AM, d.sei...@comcast.net wrote:
I got one
K6RTM
--
Message: 3
Date: Thu, 9 Sep 2010 11:37:46 -0400
From: Ralph Smith ra...@ralphsmith.org
Subject: [time-nuts] Timing Distribution in Mountainous Terrain
To: time-nuts@febo.com
Message-ID: a3fa9eac817be681f75c1df76ba2adf5.squir...@ralphsmith.org
Content-Type
or less standard WD displays.
73 -- bob K6rtm in Cupertino
--
Message: 6
Date: Thu, 02 Sep 2010 23:02:15 -0700
From: WB6BNQ wb6...@cox.net
Subject: Re: [time-nuts] OT: weather stations
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
, and then with the weather sensors at their nominal
operating height with respect to the GPS antenna did not show easily observable
differences in tbolt operation.
73 de Bob K6RTM in Silicon Valley
--
Message: 2
Date: Thu, 02 Sep 2010 20:46:00 -0400
From: Charles P
the street -- which is mostly in the due North blank
spot, or the other large trees nearby. But a two-story house and an elevation
mask of at least 20 degrees make those trees not an issue as far as GPS signals
are concerned.
73 de Bob K6RTM in Silicon Valley
(at HP/Agilent).
IEEE-1588 lets you tightly synchronize devices (and data collection) over
Ethernet networks.
(I worked with John at HP/Agilent.)
Cheers--
Bob Martin K6RTM in Silicon Valley
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
the world! He's given me many useful suggestions, and more
interesting questions to ponder.
Best 73 de Bob K6RTM in Silicon Valley.
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are too big.
Is this thing metric? I don't have access to a lot of hardware right now to
check. If it's possibly metric, I'm better off going to a different hardware
store than if it's American sizes.
Many thanks!
K6RTM Bob in Silicon Valley
that detail in the HP/Symmetricom manuals available on
the net. They only show the assemblies.
73 de Bob K6RTM in Silicon Valley
--
Message: 3
Date: Thu, 19 Aug 2010 02:07:30 + (GMT)
From: Flemming Larsen oz...@yahoo.dk
Subject: Re: [time-nuts] Mounting
k6rtm in silicon valley
-
Message: 4
Date: Thu, 05 Aug 2010 10:05:39 +1200
From: Bruce Griffiths bruce.griffi...@xtra.co.nz
Subject: Re: [time-nuts] Buffer / distribution amplifier for TCXO
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
and enumerate your GPIB (HPIB)
devices -- so if someone has changed the default address, it's one call in
EZGPIB to scan the address space and let you know what's out there (with the
exception of write-only devices like the 59306A relay box).
73 de K6RTM Bob in Silicon Valley
k6...@arrl.net
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