[time-nuts] OCXO Support Board

[Mark Sims]

One thing that I recommend is that after completing the layout is to:
1) step back and wait a few days
2) enjoy a few adult beverages while waiting
3) go back a re-check everything
4) send it out to the board house

You'd be surprised how often simple, subtle, not so subtle 
glitches/tweaks/improvements show up after a pause in the process.

---

> Once you get going, a board is a weekend project. Indeed, a simple board 
> might be an
evening project. There’s not a lot involved. 
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[time-nuts] OCXO Support Board - PCB Source

[Bob Martin]

It is nice to see PCBway mentioned.

I've used PCBway for years.  With over 30 designs, I've never
been disappointed.  Their best feature, aside from pricing,
is the ease of getting quotes. They don't care about the
number of holes in the board. Board dimensions, thickness and
volume are the main price determinants. I have done 6 layers with
no problem. No one likes paying for shipping but you do get
actual one week delivery to Colorado for two layer boards.

Bob


Am 13.05.20 um 13:35 schrieb Bill Notfaded:
> I've been trying to find a base PCB design to use too.  In the 
interim I
> bought some boards from Gerry Sweeney that sells them for HP5313x 
frequency

> counter OCXO upgrades and supports different footprints.  Open source
> design is even better.  OSHpark is great.  Please post it!

Here it is:

< 
http://www.hoffmann-hochfrequenz.de/downloads/ocxo_carrierV2_pack.zip 
   >


These are the Gerber files as used by PCBway to produce my boards.

2 buglets:

- the 2 mounting screws for the 10811 should be slightly bigger.

   Drill as needed

- Unless the oscillator delivers only a small signal, the 2 emitter
capacitors should

   each get 22 Ohms in series to adjust gain.

This will be addressed in V3. Circuits are included, comments and small
change

requests are welcome, could be done shortly thanks COV19.


cheers, Gerhard



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Re: [time-nuts] OCXO Support Board

[Wes]

I can remember "wiring" up some X-band test equipment with WR90 waveguide, 
flanges and a brazing torch. We "miniaturized" the missile hardware by using 1/4 
height W/G. Circa 1966.


Wes

On 5/13/2020 9:12 AM, ew via time-nuts wrote:

You give away your age, was there did a lot of it and off to the repro shop and 
than the board manufacturer. All local in Houston.
Bert Kehren




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Re: [time-nuts] OCXO Support Board

[Wes]

AC0XU (Jim)

I responded to your email address and it bounced.  I would be happy to get a 
board from you.


Let me know how to proceed.

Thanks, Wes


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Re: [time-nuts] Alfred Loomis - an early time nut

[Gary Woods]

On Wed, 13 May 2020 09:23:45 -0600, you wrote:

>Given all his accomplishments, he must have been a
>"Renaissance Time_Nut"!

My favorite quote from a bio of Loomis; he was shown the super secret
British magnetron, and an engineer was trying to explain how it made
high-power microwaves.
Loomis listened and said, "Oh, it's a whistle!"
(I dealt with it's megawatt descendent in the APS-20 radar).
-- 
Gary Woods O- K2AHC   Public keys at home.earthlink.net/~garygarlic, or get 
0x1D64A93D via keyserver
fingerprint =  E2 6F 50 93 7B C7 F3 CA  1F 8B 3C C0 B0 28 68 

-- 
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus


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Re: [time-nuts] OCXO Support Board

[ew via time-nuts]

You give away your age, was there did a lot of it and off to the repro shop and 
than the board manufacturer. All local in Houston.
Bert Kehren
In a message dated 5/13/2020 10:39:48 AM Eastern Standard Time, 
w...@triconet.org writes:

Thank you to all who have written, on and off list, with offers of boards and 
advice on how to make my own.  Much appreciated.

I think I'm on to one that meets my fairly simple needs and uses through-hole 
components.  I have done SMT construction in the past but things have shrunk in 
size by an order of magnitude since then it seems.  (I can remember laying out 
boards by hand, taping up the artwork 4:1, reducing it photographically, 
exposing and etching boards.  So today's technology is magical.)

Many of you are doing some awesome work.  Well done.

Wes  N7WS


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Re: [time-nuts] Alfred Loomis - an early time nut

[Bob Martin]

Thanks to all who replied. Book on order.

Given all his accomplishments, he must have been a
"Renaissance Time_Nut"!

Bob

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Re: [time-nuts] OCXO Support Board

[Wes]

Thank you to all who have written, on and off list, with offers of boards and 
advice on how to make my own.  Much appreciated.


I think I'm on to one that meets my fairly simple needs and uses through-hole 
components.  I have done SMT construction in the past but things have shrunk in 
size by an order of magnitude since then it seems.  (I can remember laying out 
boards by hand, taping up the artwork 4:1, reducing it photographically, 
exposing and etching boards.  So today's technology is magical.)


Many of you are doing some awesome work.  Well done.

Wes  N7WS


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Re: [time-nuts] OCXO Support Board

[Gerhard Hoffmann]

Am 13.05.20 um 13:35 schrieb Bill Notfaded:

I've been trying to find a base PCB design to use too.  In the interim I
bought some boards from Gerry Sweeney that sells them for HP5313x frequency
counter OCXO upgrades and supports different footprints.  Open source
design is even better.  OSHpark is great.  Please post it!


Here it is:

< http://www.hoffmann-hochfrequenz.de/downloads/ocxo_carrierV2_pack.zip    >

These are the Gerber files as used by PCBway to produce my boards.

2 buglets:

- the 2 mounting screws for the 10811 should be slightly bigger.

  Drill as needed

- Unless the oscillator delivers only a small signal, the 2 emitter 
capacitors should


  each get 22 Ohms in series to adjust gain.

This will be addressed in V3. Circuits are included, comments and small 
change


requests are welcome, could be done shortly thanks COV19.


cheers, Gerhard







Bill E.


On Tue, May 12, 2020, 11:59 PM Matthias Welwarsky 
wrote:


On Dienstag, 12. Mai 2020 20:53:25 CEST Gerhard Hoffmann wrote:


Ten boards did cost $5 at PCBway, DHL wanted $25 for transport. :-<
I can publish the Altium Designer project or the Gerber files when the
1st ten are used up
and there has been somewhat more testing. The number of possible
combinations
is quite large.

If you publish the Gerber files, People in the US can use OSHPark for
having
the boards made, in EU Aisler.net is probably the best option.

BR,
Matthias


Cheers, Gerhard

Am 12.05.20 um 19:52 schrieb Wes:

Does anyone know of a ready made board that will allow me to mount and
at the least, minimally support the operation of an MV89A oscillator.
I have one which I've powered up deadbug style and would like to clean
up the mess a little.

Thanks

Wes N7WS


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Re: [time-nuts] OCXO Support Board

[Bob kb8tq]

Hi

Some of the Chinese outfits flip that model around the other way.
You get to use the parts they have in stock. Setup *appears* to be
dirt cheap, as well as the basic parts costs. 

One of many examples:

https://jlcpcb.com 

I haven’t used them for assembly, but the do make ok boards. 

Since the parts range is limited, you will be putting a few things on 
yourself. I’d guess that 90% of the parts on a typical board will be 
things they can supply. Is there another gotcha? Not at all clear (yet). 

The outfit above has two categories of parts (basic and extended). It
appears that when you go into the extended group, there may be some
minimum order gotchas ….

Bob

> On May 13, 2020, at 9:17 AM, jimlux  wrote:
> 
> On 5/13/20 5:56 AM, Bob kb8tq wrote:
>> Hi
>> There are a number of free ( = there is no license fee ) pcb layout programs 
>> out there.
>> One of the many is KiCad. It’s not that hard to use. It is very popular. 
>> There are a lot
>> of YouTube videos and blogs detailing how to do this or that with it. Laying 
>> out a board
>> to mount an OCXO on is a pretty good starter project.
>> Once you get going, a board is a weekend project. Indeed, a simple board 
>> might be an
>> evening project. There’s not a lot involved.
>> Once you have your layout, it goes off to any of a number of outfits. Seeed 
>> Studio is
>> one that many people use. WellPCB is another that comes with a lot of 
>> recommendations.
>> As long as you stick with < 100 mm x < 100 mm parts a number of places will 
>> sell you
>> boards for 50 cents each.
>> Shipping does cost $20 to $30, so doing more than one board at a time is a 
>> pretty good
>> idea. If you are laying out five boards a week, batching them up isn’t the 
>> hard part :)
>> While most don’t seem to use it, many board houses also offer assembly / 
>> pick and place
>> services. On a board that uses simple parts, that might take out the whole 
>> assembly
>> process. No idea (yet) how well that part goes ….
> 
> 
> I've used several assembly services (in Oregon, as it happens) for small 
> boards at work (<100mm square, although that's not a requirement for the 
> service) and had relatively good luck. One of the nice things is that some 
> services will actually order and kit the parts for you - you send them a 
> board design, with a parts list from digikey, and a couple weeks later, you 
> get your boards back.
> 
> It's not super cheap, but it sure is convenient.
> 
> 
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Re: [time-nuts] OCXO Support Board

[jimlux]

On 5/13/20 5:56 AM, Bob kb8tq wrote:

Hi

There are a number of free ( = there is no license fee ) pcb layout programs 
out there.
One of the many is KiCad. It’s not that hard to use. It is very popular. There 
are a lot
of YouTube videos and blogs detailing how to do this or that with it. Laying 
out a board
to mount an OCXO on is a pretty good starter project.

Once you get going, a board is a weekend project. Indeed, a simple board might 
be an
evening project. There’s not a lot involved.

Once you have your layout, it goes off to any of a number of outfits. Seeed 
Studio is
one that many people use. WellPCB is another that comes with a lot of 
recommendations.
As long as you stick with < 100 mm x < 100 mm parts a number of places will 
sell you
boards for 50 cents each.

Shipping does cost $20 to $30, so doing more than one board at a time is a 
pretty good
idea. If you are laying out five boards a week, batching them up isn’t the hard 
part :)

While most don’t seem to use it, many board houses also offer assembly / pick 
and place
services. On a board that uses simple parts, that might take out the whole 
assembly
process. No idea (yet) how well that part goes ….




I've used several assembly services (in Oregon, as it happens) for small 
boards at work (<100mm square, although that's not a requirement for the 
service) and had relatively good luck. One of the nice things is that 
some services will actually order and kit the parts for you - you send 
them a board design, with a parts list from digikey, and a couple weeks 
later, you get your boards back.


It's not super cheap, but it sure is convenient.


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Re: [time-nuts] OCXO Support Board

[Tom Van Baak]

Bert,

I found them. You posted the Gerber files as file OCXO.pcb-1.zip on 
5-Nov-2018 here:


http://lists.febo.com/pipermail/time-nuts_lists.febo.com/2018-November/094597.html

http://lists.febo.com/pipermail/time-nuts_lists.febo.com/2018-November/094598.html

/tvb


On 5/13/2020 5:34 AM, ew via time-nuts wrote:

A year ago I posted the two boards with Gerber File since no one was willing to 
make and sell. If there is still interest I will post Gerber file again have to 
look for it
Bert Kehren


In a message dated 5/13/2020 7:40:49 AM Eastern Standard Time, 
notfad...@gmail.com writes:

I've been trying to find a base PCB design to use too.  In the interim I
bought some boards from Gerry Sweeney that sells them for HP5313x frequency
counter OCXO upgrades and supports different footprints.  Open source
design is even better.  OSHpark is great.  Please post it!

Bill E.


On Tue, May 12, 2020, 11:59 PM Matthias Welwarsky 
wrote:


On Dienstag, 12. Mai 2020 20:53:25 CEST Gerhard Hoffmann wrote:


Ten boards did cost $5 at PCBway, DHL wanted $25 for transport. :-<
I can publish the Altium Designer project or the Gerber files when the
1st ten are used up
and there has been somewhat more testing. The number of possible
combinations
is quite large.

If you publish the Gerber files, People in the US can use OSHPark for
having
the boards made, in EU Aisler.net is probably the best option.

BR,
Matthias


Cheers, Gerhard

Am 12.05.20 um 19:52 schrieb Wes:

Does anyone know of a ready made board that will allow me to mount and
at the least, minimally support the operation of an MV89A oscillator.
I have one which I've powered up deadbug style and would like to clean
up the mess a little.

Thanks

Wes N7WS


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Re: [time-nuts] OCXO Support Board

[Bob kb8tq]

Hi

There are a number of free ( = there is no license fee ) pcb layout programs 
out there. 
One of the many is KiCad. It’s not that hard to use. It is very popular. There 
are a lot
of YouTube videos and blogs detailing how to do this or that with it. Laying 
out a board
to mount an OCXO on is a pretty good starter project. 

Once you get going, a board is a weekend project. Indeed, a simple board might 
be an
evening project. There’s not a lot involved. 

Once you have your layout, it goes off to any of a number of outfits. Seeed 
Studio is 
one that many people use. WellPCB is another that comes with a lot of 
recommendations. 
As long as you stick with < 100 mm x < 100 mm parts a number of places will 
sell you
boards for 50 cents each. 

Shipping does cost $20 to $30, so doing more than one board at a time is a 
pretty good
idea. If you are laying out five boards a week, batching them up isn’t the hard 
part :)

While most don’t seem to use it, many board houses also offer assembly / pick 
and place
services. On a board that uses simple parts, that might take out the whole 
assembly
process. No idea (yet) how well that part goes ….

Bob

> On May 13, 2020, at 7:35 AM, Bill Notfaded  wrote:
> 
> I've been trying to find a base PCB design to use too.  In the interim I
> bought some boards from Gerry Sweeney that sells them for HP5313x frequency
> counter OCXO upgrades and supports different footprints.  Open source
> design is even better.  OSHpark is great.  Please post it!
> 
> Bill E.
> 
> 
> On Tue, May 12, 2020, 11:59 PM Matthias Welwarsky 
> wrote:
> 
>> On Dienstag, 12. Mai 2020 20:53:25 CEST Gerhard Hoffmann wrote:
>> 
>>> Ten boards did cost $5 at PCBway, DHL wanted $25 for transport. :-<
>>> I can publish the Altium Designer project or the Gerber files when the
>>> 1st ten are used up
>>> and there has been somewhat more testing. The number of possible
>>> combinations
>>> is quite large.
>> 
>> If you publish the Gerber files, People in the US can use OSHPark for
>> having
>> the boards made, in EU Aisler.net is probably the best option.
>> 
>> BR,
>> Matthias
>> 
>>> 
>>> Cheers, Gerhard
>>> 
>>> Am 12.05.20 um 19:52 schrieb Wes:
 Does anyone know of a ready made board that will allow me to mount and
 at the least, minimally support the operation of an MV89A oscillator.
 I have one which I've powered up deadbug style and would like to clean
 up the mess a little.
 
 Thanks
 
 Wes N7WS
 
 
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>> 
>> 
>> 
>> 
>> 
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Re: [time-nuts] OCXO Support Board

[Bill Notfaded]

I've been trying to find a base PCB design to use too.  In the interim I
bought some boards from Gerry Sweeney that sells them for HP5313x frequency
counter OCXO upgrades and supports different footprints.  Open source
design is even better.  OSHpark is great.  Please post it!

Bill E.


On Tue, May 12, 2020, 11:59 PM Matthias Welwarsky 
wrote:

> On Dienstag, 12. Mai 2020 20:53:25 CEST Gerhard Hoffmann wrote:
>
> > Ten boards did cost $5 at PCBway, DHL wanted $25 for transport. :-<
> > I can publish the Altium Designer project or the Gerber files when the
> > 1st ten are used up
> > and there has been somewhat more testing. The number of possible
> > combinations
> > is quite large.
>
> If you publish the Gerber files, People in the US can use OSHPark for
> having
> the boards made, in EU Aisler.net is probably the best option.
>
> BR,
> Matthias
>
> >
> > Cheers, Gerhard
> >
> > Am 12.05.20 um 19:52 schrieb Wes:
> > > Does anyone know of a ready made board that will allow me to mount and
> > > at the least, minimally support the operation of an MV89A oscillator.
> > > I have one which I've powered up deadbug style and would like to clean
> > > up the mess a little.
> > >
> > > Thanks
> > >
> > > Wes N7WS
> > >
> > >
> > > ___
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> > > To unsubscribe, go to
> > > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > > and follow the instructions there.
>
>
>
>
>
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Re: [time-nuts] OCXO Support Board

[Matthias Welwarsky]

On Dienstag, 12. Mai 2020 20:53:25 CEST Gerhard Hoffmann wrote:
 
> Ten boards did cost $5 at PCBway, DHL wanted $25 for transport. :-<
> I can publish the Altium Designer project or the Gerber files when the
> 1st ten are used up
> and there has been somewhat more testing. The number of possible
> combinations
> is quite large.

If you publish the Gerber files, People in the US can use OSHPark for having 
the boards made, in EU Aisler.net is probably the best option.

BR,
Matthias

> 
> Cheers, Gerhard
> 
> Am 12.05.20 um 19:52 schrieb Wes:
> > Does anyone know of a ready made board that will allow me to mount and
> > at the least, minimally support the operation of an MV89A oscillator.
> > I have one which I've powered up deadbug style and would like to clean
> > up the mess a little.
> > 
> > Thanks
> > 
> > Wes N7WS
> > 
> > 
> > ___
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> > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
> > and follow the instructions there.





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Re: [time-nuts] Alfred Loomis - an early time nut

[Poul-Henning Kamp]

In message , Tom Van Baak 
writes:

>Besides being the man behind LORAN, and a hundred other clever ideas, he 
>also pushed the state of the art in timekeeping, comparing the world's 
>best pendulum clocks against the best quartz clocks:

While was instrumental in many ways for LORAN, calling him "the man
behind LORAN" is probably overselling it a bit, as most of the
actual work was done by J. A. Pierce.

As far as I know, it is not even clear if Loomis got the idea for
hyperbolic navigation himself or if he had heard rumours about
Dippy's work in the british 'Gee' system.

Some years back I saved a copy of JAP's unofficial biography, and
when it later disappeared from the web, I put it in a corner of
my own homepage:

http://phk.freebsd.dk/misc/jack_pierce.html

It's a good read.

-- 
Poul-Henning Kamp   | UNIX since Zilog Zeus 3.20
p...@freebsd.org | TCP/IP since RFC 956
FreeBSD committer   | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.

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