I have an old JK cylindar oven. Says freq is 100? 100 What? Kcs? Dick W1DGA


On Monday, March 14, 1994 12:49:21 AM UTC-4, (unknown) wrote:
I am looking for information on a crystal/oven manufactured by James
Knights Company. It is a 1 MHz rock mounted in an oven which operates
at 55 C. The model number is JK5T.The heater runs on 6.3 volts and the
volts and the unit plugs into a 5 pin socket. In the best of all
worlds, I'd like to know the pin-out, the xtal cut and whether the
xtal was designed for series or parallel operation.

In any case, does anyone know if the James Knights Co. is still in
business? They were located in Sandwich IL when the crystal I have was
manufactured.

Tne es 73,
Barry W5KH

On Wed, 15 Aug 2012, wrote:

I have an old JK cylindar oven. Says freq is 100? 100 What? Kcs? Dick W1DGA


Come on, you've just replied to a message that is 18 years old. Nobody
reading the newsgroup back then is reading it now.

if you have a question, ask it. Don't reply to an old message, google
should be fixing that bug, and don't ask some nonsensical question that
doesn't seem to have any relationship to the original post.

Michael VE2BVW

On Monday, March 14, 1994 12:49:21 AM UTC-4, (unknown) wrote:
I am looking for information on a crystal/oven manufactured by James
Knights Company. It is a 1 MHz rock mounted in an oven which operates
at 55 C. The model number is JK5T.The heater runs on 6.3 volts and the
volts and the unit plugs into a 5 pin socket. In the best of all
worlds, I'd like to know the pin-out, the xtal cut and whether the
xtal was designed for series or parallel operation.

In any case, does anyone know if the James Knights Co. is still in
business? They were located in Sandwich IL when the crystal I have was
manufactured.

Tne es 73,
Barry W5KH

On Wed, 15 Aug 2012 20:15:04 -0400, Michael Black wrote:
On Wed, 15 Aug 2012, wrote:

I have an old JK cylindar oven. Says freq is 100? 100 What? Kcs? Dick W1DGA

Come on, you've just replied to a message that is 18 years old.
Nobody reading the newsgroup back then is reading it now.

heh... Not unexpected:
Injection-Info: glegroupsg2000goo.googlegroups.com



Actually, I think I might've been reading this ng back then.... :-)

Look on www.Repeater-builder.com

That will be as close as you will get.

No one uses crystals anymore - most everything is synthesized.

On Mon, 17 Sep 2012, Channel Jumper wrote:

Look on www.Repeater-builder.com

That will be as close as you will get.

No one uses crystals anymore - most everything is synthesized.

That's not completely true. They aren't going to lock to an RC
oscillator, the reference oscillator has to be crystal controlled.

QRP still uses crystals, it's simpler and takes up less space and dowsn't
draw much current.

Anyone using an old analog receiver still has as much use for a crystal
calibrator as in the old days. That TMC GPR-90 I got at a garage sale in
August for 20.00 came with a crystal calibrator.

There can be various standalone items where simplicity or small size is
more important than changing frequency. So some sort of signal generator,
if you don't need variable frequency, a crystal oscillator makes it
simple. A lot of digital circuitry is clocked at a high frequency, there
again one uses a crystal, though sometimes in the form of a crystal
oscillator module.

If one wants a spare receiver for the local repeater, one might as well
resurrect an old crystal controlled receiver, be it a consumer "plublic
service band" receiver or a commercial two-way receiver, and so long as
you can live with one or a frew frequencies, crystals still make it
simple.

Michael VE2BVW

On 9-17-2012 12:25, Channel Jumper wrote:
Look on www.Repeater-builder.com

That will be as close as you will get.

No one uses crystals anymore - most everything is synthesized.




We beacon operators still use crystals. Even the PLL synthesizers need
a reference frequency and that is most often a crystal oscillator.

N0EDV/B
432.324 MHz
EN45fa
Crystal Controlled GE MastrII Exciter strip