"mike"
Antonio I0JX wrote:

Frequency measurement results:

- Just turned on. Frequency = 5.000 MHz Delta F = 0
- 15 minutes after. Delta F = -98 kHz (drift = 6.5 kHz per minute)
- 30 minutes after. Delta F = - 116 kHz (drift = 3.7 kHz per minute)
- 45 minutes after. Delta F = -132 kHz (drift = 2.9 kHz per minute)
- 60 minutes after. Delta F = -141 kHz (drift = 2.3 kHz per minute)
- 75 minutes after. Delta F = -147 kHz (drift = 2.0 kHz per minute)

I don't understand your numbers at all.
I see 6 kHz in 15 minutes. By my math, that's ~400 Hz. / minute


** In each case, the radio ham idiot has divided Dekta F by the elapsed
time.

How utterly clueless.



..... Phil