[time-nuts] 5MHz x 10MHz

[Bob Camp]

Hi

Except for HP, everything from the US would have been 5 MHz as well.

Bob

On Aug 2, 2013, at 3:51 PM, Robert Atkinson <robert8rpi at yahoo.co.uk> wrote:

> 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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