[time-nuts] time-nuts Digest, Vol 102, Issue 89

[Magnus Danielson]

Hi Russ,

When testing rubidiums in my lab yesterday, I found that my main 
counter-pair (a CNT-90 and a SR-620) was way off, it seems like my 
primary GPSDO (a Thunderbolt) didn't like the situation. Will have to 
check things. A few rounds more. Also considering that I have a few 
(more) cesiums to test now. Ah well.

So, I will have to check on my GPSDO... luckily I have several :)

Cheers,
Magnus

On 01/23/2013 09:28 PM, Russ Ramirez wrote:
> Hi Magnus,
>
> The idea of not having to wonder if I can trust the source, i.e. a GPSDO,
> is appealing for sure, and one more antenna isn't going to hurt :-) Thanks
> for your reply.
>
> Russ
>
>
> On Wed, Jan 23, 2013 at 1:45 PM,<time-nuts-request at febo.com>  wrote:
>
>> Message: 5
>> Date: Wed, 23 Jan 2013 20:17:01 +0100
>> From: Magnus Danielson<magnus at rubidium.dyndns.org>
>> To: time-nuts at febo.com
>> Subject: Re: [time-nuts] Least costly 10 MHz reference solution
>> Message-ID:<5100372D.30805 at rubidium.dyndns.org>
>> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>>
>> Russ,
>>
>> Welcome!
>>
>> A rubidium or GPSDO such as Thunderbolt can be found fairly cheaply.
>> If you go for a Thunderbolt, get one with antenna as a kit, mostly
>> because it is a handy way to get started. For better stability you can
>> get a better antenna later, if the need would occur.
>>
>> The rubidium should give you the precision you need straight out of the
>> box, unless it has "issues". In order to control if it has issues,
>> having the ability to at least compare to GPS becomes obvious, so you
>> end up wanting that GPSDO anyway. You can get both for reachable money
>> anyway, if you look around long enough.
>>
>> Doing a home-cooked GPSDO is fun naturally, and there is an art in
>> low-budget designs giving fair amount of performance.
>>
>> Cheers,
>> Magnus
>>
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