Geomagnetic pulsations in the Extreme Low Frequency Band

Following the  article on the radio solar bursts received on the  decameter band during last few years by our Sidmonitor  website i decided to publish two spectacular geomagnetic pulsations  received with Forno ELF Observatory, sited in Forno di Coazze , Torino, Italy . (OPERA Network) For more references  you can also see  my previous works […]

Monitoring Mains : Microcontrollers

This will be the first part of a larger  project  that will include other friends that have collaborated  with me directly or indirectly this last year. It was in many ways, a funny and interesting project to follow. All schematics, codes and  results are free for use , please just  give  references to authors. USE CAUTION […]

HP 5370B : 20 Picoseconds Time Interval Accuracy . A test with MTI 260 and Trimble OCXO’s

Time  has come to make some measure and  view the actual performance of some time and frequency standards that I’ve got here.In the market, there are many instruments that can perform this kind of job: frequency counters and time interval counters  for example. Since I can not afford   instruments such as the Microsemi  5120a, A7-MXU […]

EFRATOM M100 and DiviBoard

Recently i’ve found some great codes from Tom Van Baak (Leapsecond) and use them  as frequency dividers. You can find the *.hex and *.asm  here I’ve burned some PIC 12F675 using a PIC programmer to have some  CMOS TTL  frequencies for  various applications  One of them was to use the M100, a great military Rubidium […]