[time-nuts] Lucent RFTG-u REF0-REF1 cable

Jerry Hancock jerry at hanler.com
Wed Nov 15 17:35:33 UTC 2017


Is there an easy way to get 10Mhz out of the REF1?

Next time I am using my electric screwdriver to take this apart.  I can’t believe how many bolts it has.  I used a screwdriver that turns double in reverse, pretty cool tool, but even then it took forever.


> On Nov 15, 2017, at 7:00 AM, Bob Camp <kb8tq at n1k.org> wrote:
> 
> Hi
> 
> At some very basic level, the GPSDO needs to decide when to go into or come
> out of holdover. That decision often involves initial setup of the GPS module and
> subsequent monitoring of the module. The risk in swapping modules is always
> tripping over an obscure IF statement somewhere that does not work right with
> the “new” module. On the Lucent boxes, there is a survey process “up front’ that
> likely gets tangled when you change modules …..
> 
> Bob
> 
>> On Nov 15, 2017, at 1:27 AM, Mark Sims <holrum at hotmail.com> wrote:
>> 
>> It might be eye candy, but is very useful eye candy when coupled with the satellite SNR values.  A GPSDO does not NEED any communications to the GPS or the outside world,  but EVERY commercial one does support it.  
>> 
>> The GPSDO firmware asks for the sat info from the GPS (so it can show it in the SYST:STAT status page) and, if it doesn't get it, it assumes the GPS is defective, crawls into a corner, and sobs.
>> 
>> ----------------
>> 
>>> Isn’t info about what satellites are where, just eye candy and irrelevant to a real GPSDO?
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