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.uk%2FFrequencyDivider%2FFrequency%2520Divider%25202.1.pdf&usg=AFQjCNHiXeXt-NZksvMBKYHfkJPf5mn_Fw&sig2=YJooGHWI_easGkSZHUVPJgThe Trimble uses a mushroom roof mounted aerial. I have recently built up an amateur band 136Khz station giving about 800 Watts into a terribly inefficient (electrically very very short) Marconi T aerial witha horizontal wire loop capacitive top hat. I have used the 10MHz out of Dave's divider board to lock a master oscillator in my Kenwood TS-590 transceiver, which is the driver for my 136kHz amp, giving just 0 dBm out. 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. This unlocks the TS-590, blah blah. My questions are, is this likely to be RF affecting the Trimble, or the board? the baord feeds a panel in my shck with its vearious frequency divisions, the 10MHz output goes to the Kenwood TS-590 reference locking gizmo. The scope shows noise from a disconnected RG-316 co-ax at the panel end. Should I get up in the loft and try connecting the 10MHz direct from the Trimble and leave the board out as a test? Does anyone know if a strong 136kHz signal is likely to affect the Trimble itself? Thanks. -- Best Regards, Chris Wilson. mailto: ch...@chriswilson.tv _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.