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QLG1- how many devices will it drive

 

The GPS module works great on my Ultimate 3S....just got to get an antenna up.

Just ordered a VFO/SIGGEN and a triple GPS-disciplined programmable crystal which will need a GPS signal.

Question is how many devices can the QLG1 drive (whats the fan out number ) ????

73
don

?
 

Hi Don

All QRP Labs kits only listen to the GPS, they do not talk back. You can put several in parallel. There isn't any official; "fan-out" number... it will depend on cable lengths and types to a great extent. I think within reason, multiple devices are fine. The input resistances are high. The speeds are slow (9600 baud serial). Theoretically the 1pps pulse should have sharp edges and long cables will deteriorate that - but all the kits have averaging built in to their GPS frequency discipline, so even this is not so much of an issue. I have had 5 connected here to my QLG1, without any noticeable degradation in performance.?

73 Hans G0UPL

On Sun, Jan 21, 2018 at 10:10 PM, kc1at via Groups.Io <kc1at@...> wrote:
The GPS module works great on my Ultimate 3S....just got to get an antenna up.

Just ordered a VFO/SIGGEN and a triple GPS-disciplined programmable crystal which will need a GPS signal.

Question is how many devices can the QLG1 drive (whats the fan out number ) ????

73
don

?
 

Hi Hans

thanks for the reply....I only have 1m of cable to the QLG-1 and will be driving 3 devices (so far).

Thanks for these wonderful kits.....gets me interested in radio again after 40 years.

73 don

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