[sdiy] HAM temperature XTO

[John L Marshall]

I heard of hams putting oscillators into vacuum bottles (Thermos) then
burying them in the ground. Should be pretty stable then. An odd lot those
hams.

HAM probably isn't an acronym unless you want to create a bacronym.
BASIC isn't an acronym either.

John, WA7BSR


----- Original Message -----
From: Czech Martin <Martin.Czech at Micronas.com>
To: Sdiy (E-Mail) <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, November 13, 2001 3:55 AM
Subject: [sdiy] HAM temperature XTO


> HAM freaks are interested in absolute frequency adjustment, because of
> heterodyning.
>
> I just saw an article (1970), where a rod of aluminium (5x5 cm^2) was
carved
> so that all oscillator stuff could be placed within. In other words:
> massive housing with 10mm walls.
>
> The author claimed that temperature will rise, too, but very isotropic.
> He also recommended isolating the outside to keep external heat out,
> as much as possible. It was also claimed that the temperature stability
was
> within 5 Hz during a session, even if the transciever was dropped
> 3cm on a hard surface.
>
> The oscillator design was temperature compensated, but of course: linear.
>
> btw.: what does HAM really stand for
>
> Home Amateur radio
> Home Amplitude Modulation
> Hungry Apes Massacre?
> Home Amateur Man?
>
> ??
>
> m.c.