[R-1051] 100 cps Synthesizer module

[Mike Andrews]

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