[time-nuts] Why a 10MHz sinewave output?

[J.D. Schoedel]

Hal Murray wrote:
> lists at rtty.us said:
>   
>> Thank goodness for that inertia. I can still cable up a 100Kcps sine wave
>> standard to run stuff from "long ago". When I run into a box that uses a T1
>> signal for a clock reference - not so easy in the basement. 
>>     
>
> How much gear is there that uses T1 for a clock input?
>
> Is there any interest in a board/chip/whatever that converts 10 MHz to T1?  A 
> clean design using a decimal DDS should fit into a small FPGA, maybe a CPLD.
>
>   
There  is quite a bit of telecom gear that will take a T1(or E1) as a 
clock reference.  A T1 BITS will provide an all 1's AMI signal which 
looks like 772 kHz on a scope.