[linrad] Re: PTS 310 synthesizer

["Rein A. Smit" <ix.netcom.com; rein0zn@xxxxxxxxxxxxxxxx>]

Hello David,

Thanks for the response.

I  found when I did another search on the DOGPILE and ran into Roger's W3SZ
page on the use and docs on his PTS boxes
Also noted again  that he was using an external source for 10 MHz. Then 
it passed my
mind, that perhaps this box does not have an internal standard!
Then you answer is comfirming that! I bought the unit on eBay and it
looked as new, but on the outside stripped down. Not even an ON/OFF
switch. Also it looked as nobody had ever looked into it.

I suppose it could well be that this unit had been part of a larger system
to be used with external standards and was bought by what ever organization
with out the internal standard.

You most likely have it right on. So I will open the box and see whether
I can find an open spot! I did not do anything on the level control but
should have been able to hear the 10 MHz signal I think.

If I get an external source do I need to change thing inside the
PTS box? Was planning to get that anyway down the line.

Well, eBay and always surprises...

Tnx es 73

Rein W6/PA0ZN




David Garnier wrote:

> Rein,
>
> I have a PTS120 and I was surprised to find that it did not contain an 
> on-board
> 10 Mhz reference oscillator, I wasn't to pleased.  An on board 
> oscillator appears to
> have been an option. These things maybe normally supplied from a 
> master 10 Mhz
> source depending on the usage.
> The PTS's logic circuitry is mostly composed of the old style ECL 
> logic, (I wish I had
> some sort of schematic for mine.)  There was no easy way to generate 
> or steal an
> +5 or +12 voltage source from the PTS's power supply to run an oven 
> oscillator.
> Ended up adding a small analog supply inside the PTS to power the oven 
> oscillator.
> I also added a mini-circuits 1:1 isolation transformer for coupling 
> the 10 Mhz source
> to the PTS.
>
> Dave Garnier - wb9own
>
>
>
> Rein A. Smit wrote:
>
> > Hello All,
> >
> > I am looking for info on the PTS 310 Synthesizer.
> >
> > My unit has no frequency selection switches , no/off and no phase 
> > selection switch either.
> > I hard wired the remote switch for 28150 Khz. with the latching and 
> > remote operation
> > enabled just to test it.
> > When I turn the unit on,  I get a broad band noise, quite strong, not 
> > a trace of any
> > generated signal and no 10 MHz signal from the internal standard.
> > Removing the 50 pin remote connector has no effect either.
> >
> > 73 Rein W6/PA0ZN
> >
> >
> >
> >
> >
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