Thanks to all those who responded to my query about the apparent errors seen on frequency standards. I am now convinced my problem is caused by frequency error in my TS- 850. I found the callibration
From G3PLX; Alan G3NYK gave some idea of how stable Droitwich 198kHz might be. I had the chance to leave my GPS-locked system monitoring it over most of a day. The results may be of interest. During
It looks to me like the 20 Mhz reference was drifting around while he was taking the measurements (possibly his audio measuring system was drifting also, but that is less important). When I do these
Hi Bill fascinating info......would it be correct to say that with the magnitude of Mike's error, it is the result of a slightly high reference oscillator ?? The step size is determined by the refere
[..] I am now convinced my problem is caused by frequency error in my TS- 850. Looking at several standards, the errors are as follows (relative to an arbitrary zero): 60.0kHz: -1.0Hz 75.0kHz: -0.8Hz
Hi Mike that does look as though there may be a need for a tweak of the reference oscillator, but this will need confirming. One problem with some radios is that they derive all the LOs from the refe
Mike Don't think Bob ZL2CA has resubbbed to the list yet but he has a TS850 and would no doubt be able to shed some light on this. He has measured DDS errors at less than a few tens of mHz I think, b
Hi Mike, I know nothing about the TS-850, but almost all radios have a trimmer capacitor or other adjustment for the main reference oscillator. If you set that properly, the slope of your tuning erro
Thanks to all those who responded to my query about the apparent errors seen on frequency standards. I am now convinced my problem is caused by frequency error in my TS- 850. Looking at several stand
Is it my new radio or is the 198kHz transmission more than 1Hz high and drifting HF? Rugby 60kHz, HBG 75kHz and DCF 77.5kHz all look good. Mike, G3XDV ==
