[time-nuts] Re: Motorola UT Still Going

[Gary Myers]

Thanks Art! Yes, my UT+ is on version 3.1, so it might have made the
cut. Rick Hambly at CNS Systems shows those comparisons in his
presentations, always a good read of how these older receivers are used
and compared in the wild. I also sourced the SSR replacement from him as
well. 

Another reason I'm sitting on the fence is that my antenna coverage is
not so good. I typically only get 10-11 satellites in view, so getting
more channels with the SSR is sort of mute. 

There is a UT+ on eBay at the moment with a 3.2 upgrade. Interesting! 

Gary 

On 2024-03-04 21:58, Art Sepin via time-nuts wrote:

> That's good news, Gary. I recall that one of the UT+ firmware versions had the capability of operating past the 1024 week mark (but may have had bug fixes in a later version).
> 
> How important one of the SSR replacement receivers becomes is application dependent. For many general timing applications, some SSR features may not matter but for updating legacy timing instrumentation, there are proven gains to be achieved over the original Motorola VP, UT+ and M12x receivers. Like better sensitivity means tracking more satellites at a given location;  accuracy of PPS ~ 21 ns for SSR vs. ~50 for UT+; anti-Jamming Performance in EMI Environments; no receiver 1024 Week Roll-Overs; four times faster TTFF than UT+ (not that important for always-on applications) and especially much better ADEV performance in legacy timing instruments.
> 
> Apologize in advance for the unintended overt commercial tone of this response!
> 
> Art
> 
> -----Original Message-----
> From: Gary Myers <gary at geekslounge.com> On Behalf Of Gary Myers via time-nuts
> Sent: Sunday, March 3, 2024 4:46 PM
> To: time-nuts at lists.febo.com
> Cc: Gary Myers <gary at geekslounge.com>
> Subject: [time-nuts] Motorola UT Still Going
> 
> I got my Tac2/Motorola UT+ out of the closet and fired up Tac32 on my
> Win11 box. The UT is still going strong with no rollover and is currently on GPS Week 2304. I have a 16-channel Synergy SSR replacement but have seen no need to swap it in. 
> 
> Are there others out there still running their old rola's?
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