[R-1051] 100 cps Synthesizer module

[paul swed]

Glad things were figured out.
Can anyone share the 100 cps with me please?
I do not seem to have it and I looked at all of the online manuals I could
fine.
As to the Ge/Si discussion
When these systems were designed which was well ahead by years of the
service dates. Ge would have been considered the more stable transistor
with a wider range of devices.
(I know how things have changed. :-) )
I was in the 2nd training class in the Navy (So they said at great lakes)
on these brand new radios. The several Amateur radio ops in the class like
myself dreamed of one of these $27,000 radios. Gosh it locked to an
external reference and if it was off 1 hz it was broken. So much for drift.

I picked up my first one many years later 1985 region from fair radio
surplus at a reasonable price, kind of. That actually went up in $ from the
time I purchased. Its been a work hoarse since. I saw the internet murphy
stacks in LA and really thought about another 2. Just never happened. If
business had dragged me out there I would have picked them up. No doubt.
Plus parts. At the end Murphy was selling modules for $25 each just to move
them. Picked up some of the troubled references 3 as I recall for other
uses.
But I will agree those knobs suck for randomly tuning around.
Regards
Paul
WB8TSL

On Sun, Mar 4, 2012 at 3:25 PM, Mike Andrews <mikea at mikea.ath.cx> wrote:

> For that matter, which model (B, C, D, E, F, G, or H) is it?
>
> On Sun, Mar 04, 2012 at 03:07:32PM -0500, paul swed wrote:
> > Interesting I did take a look in my actual manual. It does not have the
> > 100hz info. The older r1051s jumped in 500 hz steps.
> > So I am completely blind to whats inside even though my 1051 has that 100
> > hz step.
> > Do you have documentation?
>
> > On Sun, Mar 4, 2012 at 11:10 AM, paul swed <paulswedb at gmail.com> wrote:
>
> > > Boy no expert.
> > > The alcohol is acting as a cooling agent. (Never thought of using it
> that
> > > way before. Good trick.) The ICs should be RTL logic for that time
> frame.
> > > That can be confirmed by the voltage feeding them. 3.6 V for RTL.
> > > If its 5 V they are most likely DTL or TTL. I know there is little
> info on
> > > the net for RTL and even DTL. However more modern logic families could
> > > indeed replace those chips if worse came to worse.
> > > I will not have time to look atthe logic for at least a week. Travel.
> > > Good luck
> > > Paul
> > > WB8TSL
>
> > > On Sun, Mar 4, 2012 at 10:53 AM, Steve Hobensack <
> > > stevehobensack at hotmail.com> wrote:
>
> > >> I am having intermittent trouble with the 100 cps module. If I touch
> the
> > >> sl6907 / sl3144  (IC1)integrated circuit (divide by ten) with
> > >> a denatured alcohol swab, the problem will go away a short time. I
> cannot
> > >> cross reference this ic on the internet. Any help
> > >> on this ? Thanks
> > >> Steve N8YE
>
> --
> Mike Andrews, W5EGO
> mikea at mikea.ath.cx
> Tired old sysadmin
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