8600: Is OFF really OFF?

Jim KJ3P

For my former 6600 with GPS option, it was recommended to keep 12v power applied when the unit was "off" to reduce the "warm-up time" until the GPS satellites were synced. The power button showed amber to indicate this "standby" mode.

With the new 8600 and its GNSS feature is this still best practice? If not, is there any reason whatsoever to keep power applied when the 8600 has been turned off (power button dark)?

Mike-VA3MW

Yes,

When it is off, it draws about the same amount of current as your TV or computer monitor does when it is 'off'.

The vendor tells us the GNSS should acquire satellites in about 60 seconds or less. Keep in mind, while it is off, you can't use it as an NTP time standard.

Jim KJ3P

OK, thanks! Here are the timings for my 8600:

—push ON button (flashing green)

—after 40 seconds, solid green

—by the 90 second mark, the GNSS has acquired 12 satellites (23 visible)

—at 160 seconds, "LOCKED" mode is achieved

So, my 8600 takes about 2.6 minutes from turn-on to show GNSS "locked."

Good point re: the 8600's NTP server. How about a step-by-step procedure to lock the local PC to it? It would be especially fine for FT8-type apps using the PC clock.

KD0RC

Hi Jim, did you get these numbers from leaving your power supply on, or from turning on the supply immediately before pressing the ON button?

Jim KJ3P

Supply and radio cold from being off overnight. Supply on 5 seconds before pressing ON button.

Don'cha just love these deep scientific experiments?

KD0RC

Ah, ok. Give it a try where the power supply has been left on. I think you will see that after solid green, it will be locked much faster.

Neil D Friedman N3DF

I agree with Jim. I would like to know how to use an 8000 series radio as an NTP time standard when using FT8 with SSDR for Mac.