[Premium-Rx] Dymek DR-333: I need some help

[dd3ly at arcor.de]

Dear members,

I bought a Dymek DR-333 and I need some help with this radio. I bought just the radio and two floppy disks which may contain the original software from Dymek. So far I do not own an instruction manual, a circuit diagram nor a service manual (I hope that I do not need one, but read first and see later):

First I tried the demo-version of ERGO 4 and I recognized that the radio was not able to use the lower sideband (LSB) in a correct way. It seems to me as if not just the kind of demodulation is switched from AM or USB to LSB but the frequency is shifted away from the carrier center, shifted away more than it is needed. So I am not able to listen to the lower sideband at the frequency I want.

I tried one of the files from the discs too, named DR333.com. Again I was not able to listen to the lower sideband of a standard AM transmission, although this software seems to shift the frequency to another point... at  least it souns in another way. I could check this with an attenuator and a rf-generator to find out which frquency it really receives in LSB.

I made this tests under Windows XP home edition with an APEN USB-RS232 converter and with another computer under Windows 2000 with a real serial port: all behaves the same with this slight mentioned difference.

So far this is my biggest problem. I would appreciate to receive some good hints, like a list of commands and a recommendation how to check this radio for example, maybe by using a standart terminal program (from Windows?, I use XP) which sends certain commands to check all functions...

I hope that there is at least one member who would like to help me.

God bless you all!
With greetings from Germany

Andreé DD3LY