[time-nuts] Symmetricom 58536A

[Kevin Rowett]

Does the setup with the PD5120 work if the TBolt is connected to either port?

Some GPS receivers look to see if the antenna is drawing current, to determine if it’s alive.  With a splitter, the receiver might not see an antenna current.

I seem to recall the TBolt had a setting for that.

KR


> On Aug 17, 2020, at 3:04 PM, Frank O'Donnell <time at inkbox.net> wrote:
> 
> Based on a recommendation here sometime back, I bought a Symmetricom 58536A distribution amplifier so that up to four GPSDOs can share my rooftop Lucent 26db twist antenna.
> 
> When I connect the antenna to its port on the 58536A, and a Trimble Thunderbolt to port 1, Heather shows no antenna connection on the Thunderbolt. By contrast, when I use the antenna and Thunderbolt (and/or another GPSDO) with a 2-port Instock PD5120 splitter/combiner, all devices function normally.
> 
> The 58536A information note says it needs +4.5 to 13vdc. The antenna requires 3.3 to 5vdc. A multimeter measures +4.951vdc on the Thunderbolt's antenna port.
> 
> If anyone has suggestions, I'll be very grateful.
> 
> Frank
> 
> 
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