[time-nuts] UCCM arrived

Bob Camp kb8tq at n1k.org
Sat Nov 26 21:18:25 EST 2016


Hi

For a long term installation, an antenna location that will “see” more sat’s is a really good idea.

Bob

> On Nov 26, 2016, at 8:55 PM, Giuseppe Marullo <giuseppe at marullo.it> wrote:
> 
> Hello to all,
> 
> I connected the unit to a 11m of H-155 cable(assumed 4.79dB loss "worst case" at 1.5GHz), thrown the GPS antenna on the balcony horizontally and this is what I got:
> 
> UCCM-P >SYSTem:STATus?
> 
> -------------------------------------------------------------------------------
> 57964-80     serial number  87896988     firmware ver  2.0.1.6-01 LINK    mode
> -------------------------------------------------------------------------------
> Reference Status __________________________   Reference Outputs _______________
> XX Ref 8KHz 0: [Unusable]
> XX Ref 8KHz 1: [LOS]                          TFOM 2            FFOM      0
> XX Ref 8KHz 2: [LOS]                          UCCM A Status[ACTIVE]
> XX Ref 8KHz 3: [LOS]
> >> GPS: [phase:-1.2E-08]
> ACQUISITION ...................................................[GPS 1PPS Valid]
> Tracking: 4 ____   Not Tracking: 6 ________   Time ____________________________
> PRN  El  Az  C/N   PRN  El  Az                GPS 23:42:46     26 Nov 2016
> 24  45 139   43    25  57 286
>  6  24  62   38    19  11  42                ANT DLY  -1 ns
>  2  30 101   46    32  37 279                Position ________________________
> 29  30 206   41    12  70  37                MODE     Hold
>                    14  26 309
>                    31   8 309                LAT      N 45:40:29.276
>                                              LON      E 9:26:51.177
>                                              HGT +320.96 m (MSL)
> 
> 
> 
> 
> ELEV MASK  5 deg
> -------------------------------------------------------------------------------
> 
> Command complete
> UCCM-P >
> 
> 
> Seems to work (? I understand this from GPS phase and FFOM 0, not sure about the hold position status) I have somewhat stable 10MHz output, tomorrow I will use a mast for the antenna to get it higher slightly above the roof, (vertically this time!).
> 
> - I got the software from the seller but complains about some ancient OCX stuff don't want to mess with ActiveX anymore, hopefully Lady Heater will support it soon.
> 
> - Given the attenuation (less than 5 dB) do I really need to change the cable for something better?
> 
> Leds are Yellow Activity solid, red unnamed blinking fast,  Red 1PPS blinks once a second and DC green is solid.
> 
> Anything else special to check?
> 
> 
> Giuseppe Marullo
> 
> IW2JWW - JN45RQ
> 
> 
> PS: the other clock (qrp-labs) is way behind schedule, but hopefully will arrive soon
> 
> 
> `
> 
> 
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