[time-nuts] Hameg HM8125 Time/frequency Standard

Alan Melia alan.melia at btinternet.com
Tue Jul 22 07:46:12 EDT 2008


You might try the UK agent who has been quite helpful on scope spares.
hameguk at btopenworld.com

I can't remember the fellow's name now, but I bought several control knobs
to refurb an HM1005 scope. He was very helpful though this adress is not the
one on the back of the manuals!

Alan G3NYK

----- Original Message -----
From: "Ian Sheffield" <ian.sheffield1 at tesco.net>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Tuesday, July 22, 2008 11:43 AM
Subject: Re: [time-nuts] Hameg HM8125 Time/frequency Standard


> Hi Alan,
>
> Tried that, and downloaded the operating manual a while back.
> Tried your tip and looked at the German version, but no luck either.
>
> Thanks for the suggestion though.
>
> Cheers,
>
> Ian.
>
> ----- Original Message -----
> From: "Alan Melia" <alan.melia at btinternet.com>
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Sent: Tuesday, July 22, 2008 10:50 AM
> Subject: Re: [time-nuts] Hameg HM8125 Time/frequency Standard
>
>
> > Hi Ian I dont know whether it works for that unit, but try the Hameg
site.
> > http://www.hameg.com/66.0.html
> > There are "almost" complete manuals for all the units (well certainly
the
> > scopes!) You may find that there are no schematics in the English
> > versions....download the German versions (which you may see are bigger
> > files) and the are often schematics at the back of these....the titles
etc
> > are also bilingual.
> >
> > Hope that helps
> > Cheers de Alan G3NYK
> >
> > ----- Original Message -----
> > From: "Ian Sheffield" <ian.sheffield1 at tesco.net>
> > To: <time-nuts at febo.com>
> > Sent: Tuesday, July 22, 2008 7:51 AM
> > Subject: [time-nuts] Hameg HM8125 Time/frequency Standard
> >
> >
> >> Hello,
> >>
> >> Does anyone have a copy of a schematic or service manual for the
> > down-converter for the Hameg HM8125
> >> GPS frequency/time receiver?
> >>
> >> The receiver and display seems to be working fine, but the separate
> > down-converter appears to have been modified with a capacitor blocking
the
> > DC power feed from the receiver and what may be a voltage regulator has
> > been
> > removed. The downconverter appears to do more than just shift frequency,
> > as
> > it has a TDA 1574 FM subsystem chip in it as well as the expected RF
> > circuitry.
> >>
> >> Any help would be appreciated, or even if someone had a spare
> > downconverter for sale.........?
> >>
> >> These units do unfortunately, appear to be as scarce as hens' teeth.
> >>
> >> Thanks in advance,
> >>
> >> Ian Sheffield
> >>
> >>
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>
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