[time-nuts] 5MHz x 10MHz

[Robert Atkinson]

Hi
Most of the British Racal standards are 5MHz. It may well have been down to what was the best performance of the nationally avilable crystals. Everthing is a compromise.
It is easy to double a 5MHz output to 10MHz. One way is to pass it through a bridge rectifier (high speed diodes of course) and then filter it. old 10Mbs "thin" ethernet filters from network cards work well. Check the archives and do a websearch.


Robert G8RPI.



________________________________
 From: Bob Camp <lists at rtty.us>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com> 
Sent: Friday, 2 August 2013, 20:12
Subject: Re: [time-nuts] 5MHz x 10MHz
 

Hi

It may well have been teamed up with a piece of Russian designed equipment.

Bob

On Aug 2, 2013, at 2:40 PM, Euclides Chuma <euclides at w2c.com.br> wrote:

> Hi,
> 
> I thank all for your responses.
> 
> My question arose because I bought a TFL Rubidium Standard and the signal output is 5 MHz. It is a great rubidium standard so I dont understand the reason of the 5 MHZ signal output since the 10 MHz is the common standard.
> 
> Best regards
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