Grant Hodgson wrote:
> Henk
>
> Two things will dominate if you want such a low phase noise spec.:- the
> loaded Q of the oscillator circuit, and the flicker corner frequency
> of the sustaining amplifier transistor. To get a high loaded Q you need
> a crystal with a high unloaded Q - maybe 1
Hi Nigel,
Thanks for the offer, well I am not in a hurry, just take your time.I have
many other project to go
on.
About 10-15years ago I tried to copy MFS but due to the close proximity of DCF
I was unable to copy maybe I did not pay attention to the selective active
antenna and
Hi Ronald:
Not yet. Right now I'm having fun with old DC motors and Flashlights.
http://www.prc68.com/I/EM_ToyEngine.shtml
http://www.prc68.com/I/Gilbert-Motor.shtml
http://www.prc68.com/I/Weeden-El-Motor.shtml
http://www.prc68.com/I/FlashlightPat.shtml
Have Fun,
Brooke Clarke
http://www.PRC68.
Fellow clock-tickers,
I have need of the equipment manual for a TrueTime 800 series TCG. More
specifically, model 814-319-1.
Worst case, I'll try contacting Symmetricom, but I'm not holding my
breath on that one.
Thanks.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Hea
AFAIK, in a crystal oscillator specifically (not oscillators
in general), the oscillator transistor has almost nothing to
do with either close in or far out phase noise. The close in
phase noise is typically limited by the crystal's intrinsic
noise and the far out phase noise is limited by the buf
From: Bo Granlund <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] XRPU hardware on the current marketplace
Date: Sun, 30 Dec 2007 18:08:33 +0200
Message-ID: <[EMAIL PROTECTED]>
Hej Bo!
> > I'm very interested in this area, but haven't actually done anything beyond
> > surf the web looking for somet
In a message dated 30/12/2007 17:45:51 GMT Standard Time, [EMAIL PROTECTED]
writes:
Yes , I tried RadioClocks UK but no helping hand...they offered if I ship
the unit back to the factory,
??? they give a price for the conversion./ assume to expensive /...
??? I am living abou
Henk
Two things will dominate if you want such a low phase noise spec.:- the
loaded Q of the oscillator circuit, and the flicker corner frequency
of the sustaining amplifier transistor. To get a high loaded Q you need
a crystal with a high unloaded Q - maybe 100 000 or more - this isn't
dif
Hi Rob,
Yes , I tried RadioClocks UK but no helping hand...they offered if I ship the
unit back to the factory,
??? they give a price for the conversion./ assume to expensive /...
??? I am living about 25km from DCF77 in Germany, so believe the receiver
part is not a big deal,
Made by Radio Code Clocks in UK (now called Time & Frequency Solutions
www.timefreq.com ).
MSF 60 KHz receiver. I'm sure they had DCF77 option.
Have you tried Googling it?
Rob Kimberley
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of [EMAIL PROTECTED]
Hal Murray kirjoitti:
>> Has anyone built this kind of device from something else than the VCC
>> HOT1 FPGA board? Is there some directly competing product that I
>> should know about, or something like that?
>>
>
> I'm very interested in this area, but haven't actually done anything beyond
>
Brooke:
Have you tried out your last idea at least in a test configuration?
Ronald
Message: 1
Date: Fri, 28 Dec 2007 15:19:49 -0800
From: Brooke Clarke <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] accurate portable time source
To: Discussion of p
Hi,
I am looking a description/manual for Radio Clock? type RCC 8000 receiver...
assume it is tuned ?60kHz . and should like to convert? to DCF
77..every advise is appreciated.
Rgds, Ernie
-Original Message-
From: Ulrich Bangert <[EMAIL PROTECTED]>
To: 'Discussion of precis
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