[time-nuts] Lady Heather

[Neville Michie]

Hi, I have just been rather surprised to find Seattle co-ordinates  
appearing in my Lady Heather window.
I, of course, eventually found that the latest version of John's  
program is installed with a link to his TBolt.
My problem is how do you apply the /# command to look at particular  
serial port# without having to open a DOS window
and write DOS commands? How do you set up shortcut icons on the  
screen to activate a chosen implementation

of LH?
I seem to be able to manipulate the COM# numbers so that the USB to  
Com converters find the right TBolt.

It is probably something very obvious that I am missing,
cheers,
Neville Michie

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Re: [time-nuts] Neutrino timing

[Thomas A Frank]

Perhaps take advantage of one of the numerous AM radio stations in the midwest 
that happen to be about half way between?

After some initial calibration that should be repeatable.

Tom Frank


On Oct 24, 2011, at 2:12 PM, paul swed wrote:

> Boy I have to say that I agree with Bob. Nice and simple, but a boring drive
> and heavens who has budgets for the tickets?
> Looked at a map and though I could see either a dark fiber type connection
> $, or radio at 400 miles. Transmitter reference at 200 miles could give
> a common view. They grow really tall TV towers in the midwest. Certainly 50
> MHz and reasonable power would be stable. I wonder about jitter in the
> various technologies of the radio recvr. But with a CS/Rb ref. the system
> could be quite good. Way back when ran a repeater at 145 Mhz for data with
> directive antennas in Michigan. Ant at 60'. Very stable coverage at 140
> Miles.
> Regards
> Paul
> WB8TSL
> 
> On Mon, Oct 24, 2011 at 1:22 PM, mike cook  wrote:
> 
>> Le 24/10/2011 19:03, Bob Camp a écrit :
>> 
>> Hi
>>> 
>>> The "quick and dirty" way to improve the timing is pretty old school.
>>> 
>>> Toss a modern Cesium clock in the back of a car along with a bunch of
>>> batteries. Drive it back and forth between Batavia and Soudan. If you
>>> drive
>>> fast, that should be about an 8 hour trip. A good Cesium should hold 5 to
>>> 10X better than the GPS is now doing.
>>> 
>>> Better to take three.
>> 
>> 
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Re: [time-nuts] OT: In search of strange transistor data

[Gerhard Hoffmann]

On 10/28/2011 04:58 PM, Ulrich Bangert wrote:

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744

2) ENI5744

3) TRW201


None of them is in the 1977 TRW data book, European edition.
At that time, TRW swallowed Motorola Bordeaux. We then built 300W
shortwave amplifiers for an ultrasonic phased array
and TRW's development cycle was so fast that you couldn't get the
transistors any more when the data sheets were ready. :-(

Deep down in some moving box in this house are some wideband amplifiers
(relatively wideband) that contain some TRW transistors in TO-5 and
a gray plastic case with mounting screw and 4 radial leads, probably 
PT-xyzzy
Can't promise anything, but I'll try to find them over this extended 
weekend.


regards, Gerhard



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Re: [time-nuts] OT: In search of strange transistor data

[Magnus Danielson]

On 10/28/2011 05:20 PM, ed breya wrote:

Look at 2N5744 and see if it looks like what you have. Sometimes it's
that simple. It could be a specific brand or package version of a common
device, especially if it's a power Q. Ed


It is not uncommon that mapping between different vendors variant is 
listed, to aid dual source listings.


Cheers,
Magnus

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Re: [time-nuts] OT: In search of strange transistor data

[Bob Smither]

Ulrich Bangert wrote:

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744 


2) ENI5744

3) TRW201


Is this what you need:

  http://www.electronicsurplus.com/item/131847/

I could not find any specs.

Hope this helps.

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Re: [time-nuts] OT: In search of strange transistor data

[Sylvain RICHARD]

Le 28/10/2011 17:24, Sylvain RICHARD a écrit :

Ulrich Bangert wrote:

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744

2) ENI5744

3) TRW201

The usual searching methods do not apply. Must be something 
extraordinary.

TIA and my best regards.

Ulrich Bangert


Hi,

TRW201 is in my database. Three different packages.

Motorola
Silicon NPN-transistor
Flat package
Package:B
Wide lead: E
Thin lead: C
VCES 50V
VEB0 3.5V
IC 3A
Rth J-C 3.5 °C/W
TJ 200 °C
hFE min 10 @ 5V 600mA
hFE max 100 @ 5V 600mA
CCB0 <21 pF @ VCB 28V


Good luck,


Scratch that. That was for TRW2010 not 201.

--
Sylvain RICHARD


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Re: [time-nuts] OT: In search of strange transistor data

[Stanley]

TRW and PT makes me think "TRW's roots were founded in 1901, and it lasted 
more than a century until being acquired by Northrop Grumman in 2002. It 
helped create a variety of corporations, including Pacific Semiconductors,"


links:


http://www.semiconductormuseum.com/Transistors/LectureHall/JoeKnight/JoeKnight_EarlyPowerTransistorHistory_PSI_Page2.htm
http://semiconductormuseum.com/Museum_Index.htm


Stanley
- Original Message - 
From: "J. L. Trantham" 
To: "'Discussion of precise time and frequency measurement'" 


Sent: Friday, October 28, 2011 10:04 AM
Subject: Re: [time-nuts] OT: In search of strange transistor data



Current production or vintage?

Joe

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Ulrich Bangert
Sent: Friday, October 28, 2011 9:58 AM
To: Time nuts
Subject: [time-nuts] OT: In search of strange transistor data

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744

2) ENI5744

3) TRW201

The usual searching methods do not apply. Must be something extraordinary.
TIA and my best regards.

Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross Ippener


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Re: [time-nuts] OT: In search of strange transistor data

[Sylvain RICHARD]

Ulrich Bangert wrote:

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744

2) ENI5744

3) TRW201

The usual searching methods do not apply. Must be something extraordinary.
TIA and my best regards.

Ulrich Bangert


Hi,

TRW201 is in my database. Three different packages.

Motorola
Silicon NPN-transistor
Flat package
Package:B
Wide lead: E
Thin lead: C
VCES 50V
VEB0 3.5V
IC 3A
Rth J-C 3.5 °C/W
TJ 200 °C
hFE min 10 @ 5V 600mA
hFE max 100 @ 5V 600mA
CCB0 <21 pF @ VCB 28V


Good luck,

--
Sylvain RICHARD


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Re: [time-nuts] OT: In search of strange transistor data

[Alan Melia]

Hi Ulrich the 1977 TRW book lists a TRW2001 ?? 1w 2GHz 28v
All the PT devices start at 8xxx but I remember some Philips LMR radios from
that period with PT5xxx numbers but I cant find a data book.

Alan
G3NYK

- Original Message - 
From: "Ulrich Bangert" 
To: "Time nuts" 
Sent: Friday, October 28, 2011 3:58 PM
Subject: [time-nuts] OT: In search of strange transistor data


> Fellow time nuts,
>
> does anyone of you have available the specs of one of the the following
> transistors?
>
> 1) PT5744
>
> 2) ENI5744
>
> 3) TRW201
>
> The usual searching methods do not apply. Must be something extraordinary.
> TIA and my best regards.
>
> Ulrich Bangert
> www.ulrich-bangert.de
> Ortholzer Weg 1
> 27243 Gross Ippener
>
>
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[time-nuts] OT: In search of strange transistor data

[ed breya]

Look at 2N5744 and see if it looks like what you have. Sometimes it's 
that simple. It could be a specific brand or package version of a 
common device, especially if it's a power Q. Ed



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Re: [time-nuts] OT: In search of strange transistor data

[Pete Lancashire]

I have not affiliation with these guys

http://www.rcetronics.com/cgi-bin/shop.pl/SID=1267512144.2281/page=product.html/product=TRA625

just the first one to pop up doing a Google search

On Fri, Oct 28, 2011 at 8:12 AM, Ulrich Bangert  wrote:
> Vintage! However I am in search for a current replacement for a defective
> TRW201.
>
> TIA
> Ulrich Bangert
>
>> -Ursprungliche Nachricht-
>> Von: time-nuts-boun...@febo.com
>> [mailto:time-nuts-boun...@febo.com] Im Auftrag von J. L. Trantham
>> Gesendet: Freitag, 28. Oktober 2011 17:04
>> An: 'Discussion of precise time and frequency measurement'
>> Betreff: Re: [time-nuts] OT: In search of strange transistor data
>>
>>
>> Current production or vintage?
>>
>> Joe
>>
>> -Original Message-
>> From: time-nuts-boun...@febo.com
>> [mailto:time-nuts-boun...@febo.com] On Behalf Of Ulrich Bangert
>> Sent: Friday, October 28, 2011 9:58 AM
>> To: Time nuts
>> Subject: [time-nuts] OT: In search of strange transistor data
>>
>> Fellow time nuts,
>>
>> does anyone of you have available the specs of one of the the
>> following transistors?
>>
>> 1) PT5744
>>
>> 2) ENI5744
>>
>> 3) TRW201
>>
>> The usual searching methods do not apply. Must be something
>> extraordinary. TIA and my best regards.
>>
>> Ulrich Bangert
>> www.ulrich-bangert.de
>> Ortholzer Weg 1
>> 27243 Gross Ippener
>>
>>
>> ___
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>> and follow the instructions there.
>>
>>
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>> and follow the instructions there.
>
>
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>

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Re: [time-nuts] OT: In search of strange transistor data

[Ulrich Bangert]

Vintage! However I am in search for a current replacement for a defective
TRW201.

TIA
Ulrich Bangert

> -Ursprungliche Nachricht-
> Von: time-nuts-boun...@febo.com 
> [mailto:time-nuts-boun...@febo.com] Im Auftrag von J. L. Trantham
> Gesendet: Freitag, 28. Oktober 2011 17:04
> An: 'Discussion of precise time and frequency measurement'
> Betreff: Re: [time-nuts] OT: In search of strange transistor data
> 
> 
> Current production or vintage?
> 
> Joe
> 
> -Original Message-
> From: time-nuts-boun...@febo.com 
> [mailto:time-nuts-boun...@febo.com] On Behalf Of Ulrich Bangert
> Sent: Friday, October 28, 2011 9:58 AM
> To: Time nuts
> Subject: [time-nuts] OT: In search of strange transistor data
> 
> Fellow time nuts,
> 
> does anyone of you have available the specs of one of the the 
> following transistors?
> 
> 1) PT5744 
> 
> 2) ENI5744
> 
> 3) TRW201
> 
> The usual searching methods do not apply. Must be something 
> extraordinary. TIA and my best regards.
> 
> Ulrich Bangert
> www.ulrich-bangert.de
> Ortholzer Weg 1
> 27243 Gross Ippener 
> 
> 
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> 
> 
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Re: [time-nuts] [?? Probable Spam] T-Bolt Companion

[Ulrich Bangert]

Antonio,

assumed that you use the built in phase comparator of a FS700 Stanford
Research Loran receiver: I do comparisons like that between the European
Loran C chain (Sylt station in my case) and my Z3805 on a regular base and
frequency differences as low as 2E-13 (for a 120 h comparison) to 6e-14 (for
longer comparisons) are absolutely not un-normal. Gives a good feeling for
how well the Loran's cesium clocks are tuned as well as the ones in the GPS
birds.

73s de Ulrich, DF6JB   

> -Ursprungliche Nachricht-
> Von: time-nuts-boun...@febo.com 
> [mailto:time-nuts-boun...@febo.com] Im Auftrag von asma...@fc.up.pt
> Gesendet: Donnerstag, 27. Oktober 2011 17:01
> An: time-nuts@febo.com
> Betreff: [?? Probable Spam] [time-nuts] T-Bolt Companion
> 
> 
> Hello all!
> 
> I am a "proud owner" o several T-Bolts. The last one is 
> currently showing a comparison with the European LORAN-C 
> chain 6731 (Lessay) sometimes better than 1E-12. Without any 
> external temperature control. I feel therefore very happy. 
> However, I need a good frequency divider/distribution 
> amplifier providing 1MHz, 100kHz, etc. really clean and 
> beautiful buffered signal outputs. Your suggestions would be 
> very much appreciated. Thanks in advance, Antonio CT1TE
> 
> 
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Re: [time-nuts] OT: In search of strange transistor data

[J. L. Trantham]

Current production or vintage?

Joe

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Ulrich Bangert
Sent: Friday, October 28, 2011 9:58 AM
To: Time nuts
Subject: [time-nuts] OT: In search of strange transistor data

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744 

2) ENI5744

3) TRW201

The usual searching methods do not apply. Must be something extraordinary.
TIA and my best regards.

Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross Ippener 


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[time-nuts] OT: In search of strange transistor data

[Ulrich Bangert]

Fellow time nuts,

does anyone of you have available the specs of one of the the following
transistors?

1) PT5744 

2) ENI5744

3) TRW201

The usual searching methods do not apply. Must be something extraordinary.
TIA and my best regards.

Ulrich Bangert
www.ulrich-bangert.de
Ortholzer Weg 1
27243 Gross Ippener 


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Re: [time-nuts] T-Bolt Companion

[David C. Partridge]

Just a short update to say I've only got two boards left.

I could get a new batch of 100 boards made.   I will do this if there's enough 
interest, but naturally don't wish to spend several thousand buying parts and 
having boards made only to have them sit and moulder in pile in the corner of 
my den!

I would need committed orders for at least 40 to 60 boards, and I would need to 
spend a fair while costing parts to determine if I could maintain the current 
price (UK VAT is now at 20% and it's scary how much a lot of parts have gone up 
independently of the tax - not helped by the greed of shipping companies which 
is getting extreme).

Cheers
David Partridge
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf 
Of David C. Partridge
Sent: 27 October 2011 17:10
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] T-Bolt Companion

Run, don't walk to: 

The cost is GBP75 including shipping.  There's a link on the page to email me.

Regards,
David Partridge
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf 
Of asma...@fc.up.pt
Sent: 27 October 2011 16:01
To: time-nuts@febo.com
Subject: [time-nuts] T-Bolt Companion

Hello all!

I am a "proud owner" o several T-Bolts. The last one is currently showing a 
comparison with the European LORAN-C chain 6731 (Lessay) sometimes better than 
1E-12. Without any external temperature control.
I feel therefore very happy.
However, I need a good frequency divider/distribution amplifier providing 1MHz, 
100kHz, etc. really clean and beautiful buffered signal outputs.
Your suggestions would be very much appreciated.
Thanks in advance,
Antonio
CT1TE


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