[UK-CONTEST] USB to Parallel Adapter

[Peter Bowyer]

The issue with many of those devices is that they are USB parallel
printer adapters, not USB->Parallel port adapters - they come with a
Windows printer driver which drives the printer over USB - they don't
offer a LPT port interface to the PC at all. So software that expects
to be talking to an LPT port doesn't even come close to working.

Peter G4MJS

On 30/05/07, Cooper, Stewart <coopers at odl.co.uk> wrote:
>
> Yes, thanks to Clive and Chris. I had wondered if these things were
> going to give all that the DX Doubler requires. Seems unlikely.
> Many thanks for the quick replies!
> Stewart
> GM4AFF
>
>
> -----Original Message-----
> From: uk-contest-bounces at contesting.com
> [mailto:uk-contest-bounces at contesting.com] On Behalf Of G3SJJ
> Sent: 30 May 2007 11:47
> To: G3SJJ
> Cc: uk-contest at contesting.com
> Subject: Re: [UK-CONTEST] USB to Parallel Adapter
>
> Looks like Clive was correct. Delving further in to the technical spec
> it actually says Printer port and terminates in a Centronics connector.
> S-d it!
>
> Chris G3SJJ
>
>
>
> G3SJJ wrote:
> > Coincidental that you ask, Stewart. I was just about to place an order
>
> > for one of these to connect to my DX Doubler. Looks as though it would
>
> > do the trick. If so then our thanks should go to John G4IRN for
> > telling me. I had asked him if he knew of a source and as like Clive
> > says he only though they were available for the printer market.
> >
> > http://www.amazon.co.uk/Targus-Parallel-Port-Adapter-Cable/dp/B0000AKL
> > 3D
> >
> > It's probably worth a try for 13 quid.
> >
> > Chris G3SJJ
> >
> >
> >
> > Clive Whelan wrote:
> >
> >> Hi Stewart
> >>
> >> I am not aware of any such devices that work at all for our sort of
> >> apps. Those advertised seem to be aimed purely at the printer market,
>
> >> with other pins/functions disabled.
> >>
> >> Even dedicated controllers such as the DXdoubler require a hard wired
>
> >> parallel port to control switching with the "industry standard" NA
> >> protocol.
> >>
> >> The MK2R(+) of course does everything via a single USB port, but
> >> there is an awful lot of electronics in the box to achieve that.
> >> Furthermore it could seriously damage your wealth ( mine has been
> >> irreparably damaged!). However it is of course peerless.
> >>
> >>
> >> 73
> >>
> >>
> >>
> >> Clive
> >> GW3NJW
> >>
> >> -----Original Message-----
> >> From: uk-contest-bounces at contesting.com
> >> [mailto:uk-contest-bounces at contesting.com]On Behalf Of Cooper,
> >> Stewart
> >> Sent: 30 May 2007 08:49
> >> To: uk-contest at contesting.com
> >> Subject: [UK-CONTEST] USB to Parallel Adapter
> >>
> >>
> >>
> >> Does anyone have experience of using a USB to parallel adapter in the
>
> >> control of an SO2R box, keying, etc. Any recommendations?
> >> 73
> >> Stewart
> >> GM4AFF
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
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> Offshore Design Ltd
> Buchanan House
> 63 Summer Street
> Aberdeen
> AB10 1SJ
> Registered in Scotland No SC 63080
> Registered Office: John Wood House
> Greenwell Road, Aberdeen, AB12 3AX
> VAT No 296 6488 90
>
> www.odl.co.uk
>
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-- 
Peter Bowyer
Email: peter at bowyer.org