Re: [time-nuts] HP Z3801A Internal Power Supply issues

A tant melted on one of my KS-246361 boxes (I guess they're a similar age, possibly even the same source). The only one so far to have trouble. It failed in such a way that it continued to smoke and load up the power supply, The current drawn from the no-name laptop power supply was still well wit

Re: [time-nuts] moon bounce for synchronization

We were not measuring frequency but clock offset. The frequency offset was estimated from the daily clock measurements. If I remember correctly we got .1 uS accuracy. We had several Rubidium, Cesium and later a H-maser frequency standards and we kept continuous recordings (strip charts) of the

[time-nuts] Distribution amplifier architectures - mini-tutorial

I mentioned some time ago that I had posted a document to Didier's site that discusses various distribution amplifier architectures. It has now been moved into the "general population" and can be found at:

Re: [time-nuts] HP Z3801A Internal Power Supply issues

Hi I had one that took out the internal fuse once every 3 to 5 years. After replacing the fuse 3 times, the supply died. Go figure … only 15 years or use. Bob > On Jan 31, 2016, at 9:11 AM, paul swed wrote: > > As I mentioned in the another thread this week. > You can indeed replace the failed

Re: [time-nuts] MicroPulse L1/L2 Surveying Antenna

I recently also searched for details on a Micro Pulse antenna - I finally got a datasheet from PCTEL support, who (presumably) took over the Micro Pulse range at some point. > On 30. jan. 2016, at 19.17, Dan Rae wrote: > > Does anyone have any details on the above antenna? Part Number is: >

Re: [time-nuts] HP Z3801A Internal Power Supply issues

As I mentioned in the another thread this week. You can indeed replace the failed voltage with just another inverter. Mine has run this way for 10 years. Mine was a 5 by the way. If it was one side of the +/-15 I would say you want to replace both. The entire switcher can be replaced with supplies