Re: [time-nuts] Trimble Thunderbolt and David Partridge divider board question

2015-10-12 Thread Bob Camp
Hi A little quick clarification for those who don’t spend a lot of time studying PC board electro-magnetics: Reference conductor = that thing you labeled ground on the pc board. Ground = when you trip while walking the dog, it’s the thing you hit ( = earth) No that’s not the complete story, b

Re: [time-nuts] Trimble Thunderbolt and David Partridge divider board question

2015-10-12 Thread Chris Caudle
On Mon, October 12, 2015 9:08 am, Chris Wilson wrote: > I have found when the TX is on at 136kHz the Trimble / divider > baord output goes wild and a clean square wave goes seemingly random > on my scope with noise. How are your input and output cables physically configured? I noticed on the link

Re: [time-nuts] Trimble Thunderbolt and David Partridge divider board question

2015-10-12 Thread Bob Camp
Hi The 10 MHz out of the TBolt is pretty much straight off the internal OCXO with only modest buffering. If the whole TBolt dies, you still get a clean looking 10 MHz out. Best guess is that the problem is in the divider board. That said, it’s RF overloading a system. The RF could easily be co

[time-nuts] Trimble Thunderbolt and David Partridge divider board question

2015-10-12 Thread Chris Wilson
12/10/2015 14:58 I have had my Trimble and Dave's divider board for many years and it's on 24 hours a day, seven days a week, no problems. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB4QFjAAahUKEwjr27ewjb3IAhVMVhQKHVmJALI&url=http%3A%2F%2Fwww.perdrix.co