[Boatanchors] Re RME Pre-Selector Help, Please

[Richard Post]

Duane,

I agree with Chuck's identification as DB-23.  Info and several good 
pictures are at

<http://www.qsl.net/la5ki/org/rm/rm.htm>

Info says it was made in 1954.  Has three 6J6 tubes.  Cute little thing.

  I have the larger RME  DB-22 pre-selector and HF-10-20 converter 
displayed on my web page.   Nice gadgets but not highly sought after. 
I use the tunable converter for boatanchors such as the SX-62 that do 
not have bandspread.

A tunable pre-selector does interesting things if you feed a little 
of the output back to the input in a controlled fashion.  Turns it 
into a regenerative tuner. A simple diode and audio amp turns it into 
a radio.

73,

Rich KB8TAD

<http://qsl.net/kb8tad>



At 10:15 PM -0400 8/14/04, 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