[time-nuts] FTS 1200

bg at lysator.liu.se bg at lysator.liu.se
Thu Aug 9 20:07:09 EDT 2012


Hi Bert,

So the EFC does not work at all?  (or did I miss something obvious?)

/Björn

> The unit starts high and over 20 minutes comes down to 4.9999975 with 0 V
> on the EFC. Any voltage on pin 2 and it quits oscillating.
> Bert
>
>
> In a message dated 8/9/2012 7:06:48 P.M. Eastern Daylight Time,
> lists at rtty.us writes:
>
> Hi
>
> As the unit warms up, you should be able to tell weaner  it starts off
> above 5 or below 5 MHz. There are enough different crystal cuts  that
> *might* be
> in there that checking it at turn on is the easy approach. If  it starts
> low and is off low, the heater may be the  issue.
>
> Bob
>
> On Aug 9, 2012, at 6:53 PM, EWKehren at aol.com  wrote:
>
>> Bjoern
>> No not able to tune it to 5 MHz.
>>  Bert
>>
>>
>> In a message dated 8/9/2012 6:48:59 P.M.  Eastern Daylight Time,
>> bg at lysator.liu.se writes:
>>
>> Hi  Bert,
>>
>>> I have a FTS 1200 that is off by  about 2 Hz.   Have  decided to take a
>>> closer look.  Does any one have technical  Information I should  study
>>>  before I
>>> open it up.
>>> Thanks
>>> Bert  Kehren
>>
>> The efc range on my FTS 1200 goes from about   -1.5Hz to +2Hz (0V to
> +10V).
>> Is your FTS1200 of even with max (or min)  efc  voltage?
>>
>> --
>>
>> Björn
>>
>>
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