Expanded equipment holding

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Dave VK6KV

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Apr 7, 2026, 11:51:53 PMApr 7
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Hi All,

On the last AD weekend, I donated two more BG7TBL boxes that nicely augment our GPS reference capability. 

To wit: the club already has at least one BG7TBL GPS disciplined oscillator which accepts a regular active-patch GPS antenna and produces a 10MHz reference oscillator output and a pulse-per-second output synchronised with world-clock time. It also has a D9 output which provides NMEA sentences which contain lat/long, time and other GPS info, and could be passed to a small microprocessor or laptop to create a maidenhead / LCD display etc. GPSDO looks like this....

IMG_5351s.jpg

The boxes I donated came from my work, and are slightly modified distribution amplifiers, one for the 10MHz ref, the other for the pulse-per-second. Each unit takes one input from the GPSDO and creates eight synchronised outputs with only the internal propagation delay added.

This would allow us to create quite a useful supply of synchronisation signals in the shack, for disciplining local oscillators and potentially an accurate UTC clock for contesting / logging and or for WSJT digital mode synchronisation purposes.

They look like this...

IMG_5349s.jpg

IMG_5350s.jpg

Cheers, Dave VK6KV
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