Christopher Hoover asked:
one issue remains: i have to crank the magnetic field setting almost to
its high limit (9.91/10.00) to get 5 MHz out; lower settings give a
frequency that is too low. i presume this is unusual.
i have a rudimentary understanding of the rubidium
John Ackermann took my name in vain:
Hi Brooke --
The circuit I use is stolen from Tom Clark's TAC -- paralleling
several sections of a 74AC04 hex inverter through 47 ohm resistors.
For the current TADD projects, I'm using three sections that way, so
each chip gives me two outputs, and
Chuck said
I got the notion that it was turned off during Desert Storm,
by virtue of being involved in the e-warfare effort that lead
up to, and followed the event.
I haven't been paying much attention since. I knew that they
had intended to turn SA back on after production of the p-code
Don did not mention which basic receiver is inside his AUTEC box. Some
receivers do exhibit glitches. Some of these are documented in my 2000
ION paper Low-cost, High Accuracy GPS Timing available on
[1]http://gpstime.com. You might find some of the Timing for VLBI
tutorials to be
I have done several GPSDOs using the NAVMAN receiver, so I add a few
comments to the discussion:
1. Both the G3RUH
([1]http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm) and
I2PHD ([2]http://gpsdo.i2phd.com/) designs use 74HC390 divider chips;
I also tried them. What I
