Where to buy crystals?

D

DaveC

Guest
I need a 2-pin crystal, 8.86723 (PAL video standard).

Where do you get these now? Seems nobody carries them, not even ham radio
shops. I'd visit a ham swap meet but I can't wait.

I can get them from Ireland...

<http://www.donberg.co.uk/catalogue/passive_components/quartz_crystals/8.86723
8mhz.html>

Any sources in the States?

Thanks.

(I'm in N. California.)
 
In article
<0001HW.CD3EACF901E2535BB01029BF@news.eternal-september.org>,
DaveC <invalid@invalid.net> wrote:

I need a 2-pin crystal, 8.86723 (PAL video standard).

Where do you get these now? Seems nobody carries them, not even ham radio
shops. I'd visit a ham swap meet but I can't wait.

I can get them from Ireland...

http://www.donberg.co.uk/catalogue/passive_components/quartz_crystals/8.86723
8mhz.html

Any sources in the States?

Thanks.

(I'm in N. California.)
Click to expand...
When I Googled "custom frequency crystals," Google indicated over six
million hits. The frequency you gave is highly specialized. Do you
really need such accuracy? Many years ago as a ham, I used Bon-Ami to
grind away at crystals to rais their frequency. Be adventurous.

--

Sam

Conservatives are against Darwinism but for natural selection.
Liberals are for Darwinism but totally against any selection.
 
When I Googled "custom frequency crystals," Google indicated over six
million hits. The frequency you gave is highly specialized. Do you
really need such accuracy? Many years ago as a ham, I used Bon-Ami to
grind away at crystals to rais their frequency. Be adventurous.
Click to expand...
Yes I considered custom crystals, but I'm holding out of one domestic source
that someone in the "groups" knows of...

If we're talking history, when designed were published in electronics
magazines inevitably the crystal that drove them were 9.54545 (NTSC standard)
here in USA and Japan, et. al., or 8.86723 (PAL standard) in Europe, et. al.
These 2 crystals were ubiquitous.

Now I cant steal one.

Thanks.
 
On Mon, 11 Feb 2013 16:22:25 -0800, DaveC <invalid@invalid.net> wrote:

When I Googled "custom frequency crystals," Google indicated over six
million hits. The frequency you gave is highly specialized. Do you
really need such accuracy? Many years ago as a ham, I used Bon-Ami to
grind away at crystals to rais their frequency. Be adventurous.

Yes I considered custom crystals, but I'm holding out of one domestic source
that someone in the "groups" knows of...

If we're talking history, when designed were published in electronics
magazines inevitably the crystal that drove them were 9.54545 (NTSC standard)
here in USA and Japan, et. al., or 8.86723 (PAL standard) in Europe, et. al.
These 2 crystals were ubiquitous.

Now I cant steal one.
Click to expand...
9.5454MHz is available ($.81 for one at DigiKey).

You might try here, too:
http://radiohobbystore.com/crystals-and-filters/8867.html
(brought to you by your local search engine)
 
9.5454MHz is available ($.81 for one at DigiKey).
Click to expand...
I need 8.86723

You might try here, too:
http://radiohobbystore.com/crystals-and-filters/8867.html
Click to expand...
I saw that one too: Israel. I'm searching for a local (USA) source.

Thanks.
 
On Mon, 11 Feb 2013 19:33:57 -0500, the renowned krw@attt.bizz wrote:

On Mon, 11 Feb 2013 16:22:25 -0800, DaveC <invalid@invalid.net> wrote:

When I Googled "custom frequency crystals," Google indicated over six
million hits. The frequency you gave is highly specialized. Do you
really need such accuracy? Many years ago as a ham, I used Bon-Ami to
grind away at crystals to rais their frequency. Be adventurous.

Yes I considered custom crystals, but I'm holding out of one domestic source
that someone in the "groups" knows of...

If we're talking history, when designed were published in electronics
magazines inevitably the crystal that drove them were 9.54545 (NTSC standard)
here in USA and Japan, et. al., or 8.86723 (PAL standard) in Europe, et. al.
These 2 crystals were ubiquitous.

Now I cant steal one.

9.5454MHz is available ($.81 for one at DigiKey).

You might try here, too:
http://radiohobbystore.com/crystals-and-filters/8867.html
(brought to you by your local search engine)
Click to expand...
Israel (or perhaps Palestine).

Alib*ba has them for 30 pcs for $13. shipped.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
Followups set to sci.electronics.components .

In sci.electronics.components DaveC <invalid@invalid.net> wrote:
I need a 2-pin crystal, 8.86723 (PAL video standard).

Where do you get these now?
Click to expand...
If you can hack in another divide-by-2 stage, Mouser and Digi-Key both
carry 17.734475 MHz crystals, which would give you 8.8672375 MHz.

If this crystal's only job is to provide a digital logic clock, Mouser
and Digi-Key also sell programmable crystal oscillators for around $7
to $10. You tell them what frequency you want and they program it for
you before shipping. They come in little cans about the size of an
8-pin or 16-pin DIP IC; you supply power (usually 3.3 V or 5 V) and
ground and square waves come out.

Matt Roberds
 
"DaveC" <invalid@invalid.net> wrote in message
news:0001HW.CD3ED17A01EAE186B01029BF@news.eternal-september.org...
9.5454MHz is available ($.81 for one at DigiKey).

I need 8.86723

You might try here, too:
http://radiohobbystore.com/crystals-and-filters/8867.html

I saw that one too: Israel. I'm searching for a local (USA) source.

Thanks.
Click to expand...
 
"DaveC" <invalid@invalid.net> wrote in message
news:0001HW.CD3ED17A01EAE186B01029BF@news.eternal-september.org...
9.5454MHz is available ($.81 for one at DigiKey).

I need 8.86723

You might try here, too:
http://radiohobbystore.com/crystals-and-filters/8867.html

I saw that one too: Israel. I'm searching for a local (USA) source.

Thanks.
Click to expand...

Is that twice the 4.433MHz (I'm too lazy to reach for the calculator)?

In the late 80s some plastic case computers had fancy custom video chips - a
17.*** MHz crystal was often used to */4 and obtain quadrature pulse trains
at 4.433MHz.

Here in the UK, the 8.*** MHz crystals sometimes turn up in scrap TVs I
rescue from the bin rooms at the flats - but the component harvest isn't
what it used to be, so I don't always bother.

Have you contacted Farnell? - in the UK they run CPC, which supplies service
components for TV and other consumer goods.
 
"DaveC" <invalid@invalid.net> wrote in message
news:0001HW.CD3ECB4101E96C4BB04179BF@news.eternal-september.org...
When I Googled "custom frequency crystals," Google indicated over six
million hits. The frequency you gave is highly specialized. Do you
really need such accuracy? Many years ago as a ham, I used Bon-Ami to
grind away at crystals to rais their frequency. Be adventurous.

Yes I considered custom crystals, but I'm holding out of one domestic
source
that someone in the "groups" knows of...

If we're talking history, when designed were published in electronics
magazines inevitably the crystal that drove them were 9.54545 (NTSC
standard)
here in USA and Japan, et. al., or 8.86723 (PAL standard) in Europe, et.
al.
These 2 crystals were ubiquitous.

Now I cant steal one.

Thanks.
Click to expand...
Much more commonly - in the UK at least - the 'standard' PAL crystal was
half that at 4.43361875 MHz. I used to have those coming out of my ears, but
I don't think I have any now ...

Arfa
 
"Arfa Daily" <arfa.daily@ntlworld.com> wrote in message
news:CRCSs.81016$FK5.58274@fx20.fr7...
"DaveC" <invalid@invalid.net> wrote in message
news:0001HW.CD3ECB4101E96C4BB04179BF@news.eternal-september.org...
When I Googled "custom frequency crystals," Google indicated over six
million hits. The frequency you gave is highly specialized. Do you
really need such accuracy? Many years ago as a ham, I used Bon-Ami to
grind away at crystals to rais their frequency. Be adventurous.

Yes I considered custom crystals, but I'm holding out of one domestic
source
that someone in the "groups" knows of...

If we're talking history, when designed were published in electronics
magazines inevitably the crystal that drove them were 9.54545 (NTSC
standard)
here in USA and Japan, et. al., or 8.86723 (PAL standard) in Europe, et.
al.
These 2 crystals were ubiquitous.

Now I cant steal one.

Thanks.



Much more commonly - in the UK at least - the 'standard' PAL crystal was
half that at 4.43361875 MHz. I used to have those coming out of my ears,
but I don't think I have any now ...
Click to expand...

There's probably one or two 8.86 crystals in the crud at the bottom of my
junk box - they were fairly common with the large multifunction
IF/decoder/timebase chips used in TV sets for the tail end of the CRT era.
 
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