[Boatanchors] Re RME Pre-Selector Help, Please

[Chuck McGregor]

Duane -
It sounds like you have an RME DB-23 pre-selector.  Instruction sheets and 
schematic available at BAMA.

73,
Chuck,  N7RHU


At 07:15 PM 8/14/2004, Duane Fischer, W8DBF wrote:


>
>Hi All,
>
>         I was just given an item by RME that 'appears' to be a 
> pre-selector. It has no
>model number on it. Described as follows:
>
>Width: 7 inches, depth: 5 inches, height: 4 inches.
>
>The front panel has a knob on the left that rotates about 180 degrees. I think
>that is the pre-select gain control. There is a knob of the same size on 
>the far
>right that is an on/off switch. There is a large knob in the center with six
>positions. I suspect the one on the far counterclockwise side is the in/out,
>followed by the band to be selected - 80, 40, 20, 15 or 10 meters. There 
>are no
>other controls. Tuning appears to be automatic.
>
>The display is a rectangular window. It appears somewhat crescent shaped, but
>this is due to the top of the large knob covering part of the bottom of this
>window.
>
>Looking at the back head on and from left to right: a very small two conductor
>wire with two small alligator clips on the ends, like an AC line cord, 
>only much
>smaller in size. Below that is a three screw terminal strip. The first 
>screw is
>not used. There is a resistor connected to the second screw and the other 
>end to
>one side of a shielded coax cable. The third screw has the other wire of the
>shielded coax connected to it. The end of the shielded cable has a male 
>RCA plug
>on it. Moving farther right is the AC line cord. On the far right are 
>three more
>screws on a terminal strip. The screw farthest left and the middle screw are
>connected to a little circuit board with a female quarter inch jack in it. The
>screw on the far right is not used.
>
>It has several vacuum tubes in it and looks to be about the early sixties in
>design. Strictly a guess on my part!
>
>I would appreciate any information one of you might be able to come up with on
>this RME product. As stated above, there is 'no' model number showing.
>
>I do know that older models of the RME pre-selector did have a tuning 
>knob, this
>one appears to not require that.
>
>If we get lucky and can ID this puppy, maybe you can give me an idea what it
>sold for, what year it was made and what it might be worth on today's market.
>Thank you in advance for your assistance.
>
>Duane W8DBF
>
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