[time-nuts] FTS 1200

[EWKehren at aol.com]

Bjoern
No EFC. The moment I even put a small Voltage like 0.9 V through a 33 K  
resistor on pin 2 it quits oscillating.
Bert
 
 
In a message dated 8/9/2012 8:07:24 P.M. Eastern Daylight Time,  
bg at lysator.liu.se writes:

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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