Big arguments on the digital groups as to what type works etc ..
items that use the Prolific
chips , may be better , the latest driver is :-
Prolific 29/04/2011 2.0.16.166, I have one that cat links the
ft897 to a usb port
Other usb/serial are provided by wch-cn , but the driver (win-xp)
is data 03/06/2009
these run the pk232 and a t/r switch , seem to function ok ,
these came from amazon.com for £3 each , not quite plug and play ,
need to have driver installed , from mini cd or by web link
G..
--------------------------------------------------
From: "mal hamilton" <[email protected]>
Sent: Thursday, December 29, 2011 3:59 PM
To: <[email protected]>
Subject: LF: Re: Re: USB QRS
Jim
Tnx info.
What model do u use?
de Mal
----- Original Message -----
From: "James Moritz" <[email protected]>
To: <[email protected]>
Sent: Thursday, December 29, 2011 3:43 PM
Subject: LF: Re: USB QRS
Dear Mal, LF Group,
...>Does anyone know of a QRS prog that uses the USB port on a computer
instead of the Serial or Parallel ports
de mal/g3kev...>
More to the point, how to connect the other end of the USB cable to the
transmitter, given that it only contains fixed 0, +5V power supply
connections and a differential pair carrying high-speed bi-directional
data.
The usual solution is to use one of the inexpensive USB - RS232
converters.
The one in use here takes the form of a cable with USB plug on one end
and
D9 plug on the other, containing the interface circuit. It seems to work
fine.
Cheers, Jim Moritz
73 de M0BMU
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