Lets see. 10 mHz is .01Hz
Do any of you remember when this mHz thing started?
It happened about the same time DE9 connectors became DB9
and DA15 connectors became DB15 connectors.
Also, during that time the RS232 spec did not specify a connector.
Just signals, voltage levels and rise/fall times.
Turning it off is the only way I could figure out.
J. L. Trantham wrote:
I have two of the 3586C's and tried the 'Beethoven Test' on both.
Now, other than turning it off, how do you make it stop?
Joe
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I sold them with the warning, each piece had at least one or two 50
foot sections
that had not been 'eaten'. It is fuzzy but I think each section was
200 feet long, the
part I remember the most was the weight vs RG8.
We are both old :-)
-pete
On Mon, Jul 30, 2012 at 6:00 PM, Rex wrote:
> Many y
Yep! That does it. However, it completes the 'stanza' before it quits.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of dlewis6767
Sent: Monday, July 30, 2012 7:33 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] HP-3586x Beethov
Many years back I bought a long coil of the orange cable with N
connectors on it at a flea market. Only when I got home did I notice
that vampires had been gnawing on it in many places :-(
I should have known better and spotted the holes.
I'm pretty sure I know which box holds my vampire tool a
Page 8-28 of the Service Manual discusses this test (8.81 TF-13 Group 5).
Pushing the MEAS/CONT button exists the test.
-Don
--
From: "Burt I. Weiner"
Sent: Monday, July 30, 2012 7:16 PM
To:
Subject: [time-nuts] HP-3586x Beethoven Test...
HP58532A
The manual is on my web site
Www. KO4BB.com/Manuals
The Bullet antenna specs are also on my site.
Didier
Didier
Steve wrote:
>Didier,
>
>What is the model number of the Symmetricom antenna? Do you happen to
>know the difference in gain between it and the Trimble Bullet antenna?
Looks like my bullet might be bad.. .
Didier
"Charles P. Steinmetz" wrote:
>Chuck wrote:
>
>>I don't quite know what to say about that. Trimble seems to think
>that bullet
>>antenna is the right thing to use. Somehow, I would think they should
>know.
>
>I normally use a choke-ring survey ant
I was hoping you wouldn't ask. I've always had to turn my 3586's off
and then back on. There must be a simpler way but I don't remember
what it is. It's kinda neat, isn't it. Someone at HP had a sense of humor.
Burt, K6OQK
At 04:56 PM 7/30/2012, time-nuts-requ...@febo.com wrote
From: "J.
Chuck
I have 3 TBs here at the moment. The other two were group buys, therefore
more recent than the red box.
The two group buys use magnet puck antennas. One is a Trimble (small but
heavy, all metal, looks well made) the other a no name Chinese model. Both
are inside the house in my up
I was wondering if I go for a signal diode (presumably low inductance but also
low capacitance) or a beefy power diode with a hunk of capacitance. I suppose a
signal diode and chip cap is the best solution.
-Original Message-
From: "Tom Miller"
Date: Mon, 30 Jul 2012 20:06:01
To: ; Di
Didier,
What is the model number of the Symmetricom antenna? Do you happen to
know the difference in gain between it and the Trimble Bullet antenna?
Steve K8JQ
On 7/30/2012 2:46 PM, Didier Juges wrote:
Chuck,
I have one of the original red box TB. It came with the Trimble Bullet antenna
t
Put a capacitor across the diode. 0.01 uF should be fine.
- Original Message -
From:
To: "Discussion of precise time and frequency measurement"
Sent: Monday, July 30, 2012 7:58 PM
Subject: Re: [time-nuts] Active antennas for a Thunderbolt...
Are you considering lumped components?
Weird timing, I was digging through the attic and two weeks ago found
a box with AMP stinger repair kits, a couple unopened MAUs,
and at least one said tool or two in the bottom of the box. There use
to be a few N connectors but I still use them so they ended up in the
RF connector box.
I use to h
The coax is actually 50 feet of good quality 75 ohm cable that I bought for
this (rated for satellite TV). I have not measured the loss accurately but I
did check it at 2GHz when I bought it and it was good.
Didier
Tom Knox wrote:
>
>Hi;
>Is your coax 50 or 75 ohm? Is it microwave rated?
Are you considering lumped components? At that frequency, you really need to be
doing a stripline design. There are also COTS SAW filters.
I have this US Navy GPS active antenna with integral SAW filter, but never got
around to using it due to the 4.3VDC spec. A separate power supply, DC insert
I have two of the 3586C's and tried the 'Beethoven Test' on both.
Now, other than turning it off, how do you make it stop?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Burt I. Weiner
Sent: Monday, July 30, 2012 4:03 PM
To: tim
Chris Albertson wrote:
... I wonder how many
people here remember the old 10base5 stuff. We used to call it
"Frozen yellow garden hose". It was a perfect description. I think
it was about 1980. And I still remember being astounded when I saw
that a "vampire tap" could work.
Or maybe more t
Ok, that's about what I thought you would do. Since it isn't in a
controlled antenna farm, you get a functionality test, with an approximate
example of the gain.
Thanks!
-Chuck Harris
OBTW, any luck fixing bad antennas?
Azelio Boriani wrote:
I use a small power supply to feed the antenna (us
Not only do i remember the frozen yellow hose, I still have my vampire tap
drill/tool...now finding it may be another matter...:)
On Jul 30, 2012, at 18:53, Chris Albertson wrote:
> On Mon, Jul 30, 2012 at 12:41 PM, Sylvain Munaut <246...@gmail.com> wrote:
>>> 10 mHz
>>
>> Please use MHz .
Hi:
What is the GPS bandwidth at 1575.42 MHz? For a band-pass filter /
amplifier would a Butterworth response be acceptable?
Thanks,
Ron
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Azelio Boriani
Sent: Monday, July 30, 2012 1:17 PM
T
The mother of all Easter eggs! The boffins that hacked this code
in the 1970s had serious class.
This should make these instruments priceless on Ebay.
On 07/30/2012 02:03 PM, Burt I. Weiner wrote:
“Recall”, “decimal point”, “CENTR FREQ”, “8” and then wait.
--
Chuck Forsberg WA7KGX N2469R
Bob Bownes wrote:
> Old ThinNet was coax,
s/was/is/ -- I am still using it.
SF
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and follow the instructions there.
In case anyone ever has a desire to run 10 Mhz sine waves over twisted pair
Ethernet cables, I've had reasonably good success doing this using the Balun's
sold for running composite video over twisted pair Ethernet cables.
My very anecdotal testing leads me to believe this works better than us
On Mon, Jul 30, 2012 at 12:41 PM, Sylvain Munaut <246...@gmail.com> wrote:
>> 10 mHz
>
> Please use MHz ...
>
> 10 mHz is 10 milli-hertz, ie 1 cycle every 10 second.
>
>
> An yes, ethernet not being coax cables, I'd expect them to act as
> antennas quite a bit ...
He said "old" Ethernet cables s
Chuck wrote:
I don't quite know what to say about that. Trimble seems to think that bullet
antenna is the right thing to use. Somehow, I would think they should know.
I normally use a choke-ring survey antenna, but I also have a Trimble
Bullet III, P/N 41556-00 (RoHS version is P/N 57860-10
I don't have this instrument but I have an old HP flatbed scanner that
plays the "Ode to Joy" from the Symphony number 9 (using the stepper motor)
when powered up with the front button pressed...
On Mon, Jul 30, 2012 at 11:03 PM, Burt I. Weiner wrote:
> Somehow I was hoping someone might ask.
>
Somehow I was hoping someone might ask.
The following was sent to me by Stu, K6YAZ. If
you are not familiar with this HP-3586x test, you
should acquaint yourself with it. Apparently
this can be run on any of the HP-3586s the A, B, or C versions.
Enter the following from the front panel:
Chuck,
I have seen already intermittent antenna receptacle on the
back of the TB, also chk all coax connectors for solid contact.
Rgds Ernie.
-Original Message-
From: Chuck Harris
To: Discussion of precise time and frequency measurement
Sent: Mon, Jul 30, 2012 9:52 pm
Subject: Re
Can you open them up and see how they are made and what they use for the
gain device?
Take lots of pictures :)
- Original Message -
From: "Chuck Harris"
To: "Discussion of precise time and frequency measurement"
Sent: Monday, July 30, 2012 4:07 PM
Subject: Re: [time-nuts] Active an
I use a small power supply to feed the antenna (use a bias tee) and a DC
block for the analyzer input. I have made a quadrifilar helix for the
analyzer output. Set a suitable frequency range (1400-1700) and test. Yes,
I have (at work) an analyzer with the S-parameter test set, so that no
directiona
On 7/30/2012 6:39 PM, Chris Albertson wrote:
I use one just like auction #180518378555. It is "only" 26dB but the
thing is very reliable. It is a helix antenna inside and the mounting
holes on the bottom line up with a standard iron pipe flange so
mounting is easy.
That's exactly the same an
On Mon, Jul 30, 2012 at 1:07 PM, Burt I. Weiner wrote:
> I've seen severe damage to the motherboard caused by the battery leaking
> onto it. I've bought two with all the options from eBay, but will not
> consider one unless they seller shows it up and running, even with errors
> displayed. If I
Hi Didier,
I don't quite know what to say about that. Trimble seems to think that bullet
antenna is the right thing to use. Somehow, I would think they should know.
It is possible that they are prone to failure, I guess...
It is surprising to me that the only antenna I can get to work is a Mot
I've seen severe damage to the motherboard caused by the battery
leaking onto it. I've bought two with all the options from eBay, but
will not consider one unless they seller shows it up and running,
even with errors displayed. If I see it's running almost all other
problems are fixable. Whe
Old ThinNet was coax, as was ThickNet before it. Only in the Modern Age
have they been using twisted pair. :)
On Mon, Jul 30, 2012 at 3:41 PM, Sylvain Munaut <246...@gmail.com> wrote:
> > 10 mHz
>
> Please use MHz ...
>
> 10 mHz is 10 milli-hertz, ie 1 cycle every 10 second.
>
>
> An yes, ethe
Quad RG6, under 10 feet. And RG223 under 10 feet.
-Chuck Harris
Tom Knox wrote:
Hi; Is your coax 50 or 75 ohm? Is it microwave rated? and have you tried
changing
coax length? None of these should be a major factor but could make a difference.
Best Wishes; Thomas Knox
Yep.. I'm slowly replacing my no name rg 58 jumpers with double shieled rg
400. I also have some 1/4 inch "heliax" cable that also works well.
I found that terminting all of the un used outputs with 50 ohm terminators
also helps keep the noise down.
--
On Mon,
Hi Azelio,
How would you use a network analyzer to test an active antenna
like these? I have the ANA, but I am not sure how to couple
the input to the antenna effectively.
-Chuck Harris
Azelio Boriani wrote:
Have you any other GPS unit to test your antennae? You can test GPS
antennae with a n
I didn't know WWV transmits sub-audio.
-John
==
> I am driving a Flexradio 1500, Racal-Dana 1992 counter,
> Advantest U3641 spectrum analyzer, and my new
> HP 3586B+ selective level meter with the 10 mHz from
> my Thunderbolt. I had been using some old Ethernet cables
> to drive
Hi Warren,
I am not battling weak signals, I am battling no signals from
two mushroom type antennas.
-Chuck Harris
WarrenS wrote:
Have you used Lady Heather to automatically set the Default settings?
To allow the Tbolt to work with weak signals from any antenna that I've tried,
even
when in
> 10 mHz
Please use MHz ...
10 mHz is 10 milli-hertz, ie 1 cycle every 10 second.
An yes, ethernet not being coax cables, I'd expect them to act as
antennas quite a bit ...
Cheers,
Sylvain
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To
I am driving a Flexradio 1500, Racal-Dana 1992 counter,
Advantest U3641 spectrum analyzer, and my new
HP 3586B+ selective level meter with the 10 mHz from
my Thunderbolt. I had been using some old Ethernet cables
to drive this lot until last weekend.
I noticed that WWV on 10 mHz was being swamp
My first Thunderbolt related GPS antenna was the mushroom model
that came with my first kit from China. It had a length of 50 ohm
rg58 attached. I added another 50 feet of rg6 to reach the Thunderbolt
in my office. It worked fine but needed an amp to drive two Thunderbolts.
I then bought one o
Hi;
Is your coax 50 or 75 ohm? Is it microwave rated? and have you tried changing
coax length? None of these should be a major factor but could make a difference.
Best Wishes;
Thomas Knox
> From: shali...@gmail.com
> Date: Mon, 30 Jul 2012 13:46:40 -0500
> To: time-nuts@febo.com
> Subject: Re:
Chuck,
I have one of the original red box TB. It came with the Trimble Bullet antenna
that is specified in the TB datasheet.
The antenna works but gives extremely poor results. The TB works much better
with the Symmetricom antenna that is sometimes available on eBay.
The Bullet antenna is
Hi Chris,
I agree, once is just anomalous, but twice makes my debugging
hat go on... especially when it is two different manufacture
antennas.
The first antenna is the exact antenna that Trimble recommends
for the TB. It is a type 25045-10. Surely it should be compatible?
The second antenna is
I use one just like auction #180518378555. It is "only" 26dB but the
thing is very reliable. It is a helix antenna inside and the mounting
holes on the bottom line up with a standard iron pipe flange so
mounting is easy. I filled the flang flat them glued autommotive type
gaskit mmaterial to th
Once, I'd suspect a dead antenna. But twice? I wonder if your cable
is bad? Or something else. Did you connect the working puck antenna
to the end of the same cable you used for the bullet antennas? Are
the bullet antenna designed for 5V (some want a lower voltage.)
I'm using a 26dB bullet a
Have you used Lady Heather to automatically set the Default settings?
To allow the Tbolt to work with weak signals from any antenna that I've
tried, even when indoors,
I start by setting the TBolt's AMU level from the default of 4 down to 0.
This can be done with the Tbolt S/W or LH.
My gener
On a window sill, my Motorola hockey pucks will get a useable satellite
every few minutes, for a few minutes. If the antenna is out in the yard,
it does much better, but all satellite signals are really low.
The system would like another 10 or 20db of gain... which is what the
Trimble bullet ante
Have you any other GPS unit to test your antennae? You can test GPS
antennae with a network analyzer or a spectrum analyzer with the tracking
generator... yes, first you have to find one.
On Mon, Jul 30, 2012 at 5:12 PM, Hal Murray wrote:
>
> cfhar...@erols.com said:
> > I suspect that I have ju
cfhar...@erols.com said:
> I suspect that I have just had the bad luck to buy two bad antennas, but I
> am naturally curious what happens when the sample set gets larger.
I have 2 TBolts using the small Motorola antenna from TAPR in a not-good
location. The sheet says 24 dB of gain. I have 6
Hi Brooke,
Lots of nice information, but I already have most of it. The question
left unanswered is: Is it usually that hard to find a good working
active antenna that works with the TB? Thus far, I have several hockey
puck antennas that work fine... albeit a bit deafly, as would be
expected..
Hi Chuck:
See:
http://www.prc68.com/I/ThunderBolt.shtml#Ant
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
Chuck Harris wrote:
Ok, I'm getting a little puzzled. I have a TB that came from one of
the early groups sold by John Ackermann and TVB
Ok, I'm getting a little puzzled. I have a TB that came from one of
the early groups sold by John Ackermann and TVB as part of the TAPR buy.
It works nicely, but like all TB's, it is deaf as a post, and needs a
high gain antenna When I first got the TB, I tried it with a Motorola
hockey puck
I decided rather than order another adapter which might not fit I'd put
a BNC
connector in for the wide band input. Electrically it is trivial as
claimed.
Mechanically, I had to make a large hole in the plastic front panel to
allow tthe
BNC plug to slip on.
This is the first complex HP instru
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