[time-nuts] Re. DIY atomic "resonator"

paul swed paulswedb at gmail.com
Tue Apr 11 09:23:44 EDT 2017

Now I know your location. So your questions make more sense to me.
With respect to home brewing atomic standards. There have been numerous
threads on time-nuts around this.
The fact is technology has obsoleted so many technologies that things like
Rb references can be had far cheaper used then home brewed. Or GPSDOs very
cheap and there is almost always a way to sneak an antenna outside. Just
have to work at it. (Been there, done that)
H masers are even more complex and again search time-nuts for details.There
have been really good threads on rebuilding used H Masers. Wow complicated!

So all of my comments are useful but the real question is what do you want
to accomplish? A good reference for your SDR. Build an atomic standard for
fun. Nothing wrong with any of these. But useful to understand your goal.

On Tue, Apr 11, 2017 at 3:31 AM, Andre <Andre at lanoe.net> wrote:

> Hi all.
> As a first step, I wanted to build a specific hydrogen line (1.420 GHz)
> preamp.
> Seems that some fluorescent tube starters do emit a very brief burst at
> around 1.4 GHz
> during a specific portion of the initial switch-on surge when cold and
> actually observed this here.
> Also relevant, this same preamp can be used for GPS and if you're living
> in an RF proof flat
> with only one good radio station its hard to get any signal.
> Has anyone else either built an atomic clock around a bare Rb lamp module
> "core" or attempted
> to make a hydrogen maser?
> It would be a fascinating project to integrate SDR as these are (with
> modifications) very accurate
> and can be used to fine tune a lot of the oscillators etc with less hassle.
> Thanks, -Andre in Guernsey
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