[Boatanchors] WRL Q-Multiplier arrived

[Philip Atchley]

Hello,

Yesterday the WRL Q-multiplier arrived and it's in very nice condition.  
The cabinet is gray hammertone and polished up very well, looks nearly 
new.  The front panel also looked nice.  The only noticeable blems seems 
to be around the cabinet seam on the bottom of the case.

Opening it up revealed one "Tiny Chief" pink capacitor which I 
replaced.   It was easy to disconnect the leads from the main filter can 
and install new filters under the chassis, leaving the chassis mounted 
can in place for appearance's sake.

A few notes.

1.  The tube is a type 5751, not sure if it's original as I haven't got 
a schematic.
2.  The rectifier is a gold colored "Tophat" style with leads. Can't see 
a number without removing it.  Probably original equipment as the 
terminal strips etc are arranged to "fit" it.  So that places the age of 
the unit as "newer than selenium rectifiers".
3.  There are TWO slug tuned coils with outer ferrite shields.  The 
input lead connects to one of these with the other side going to ground 
through a .005uF disk capacitor.
4.  I plan on "reverse engineering" this unit and draw it's schematic.  
When I do that I'll post it on my website for the benefit of others.
5.  The ads said that it was usable on AC/DC receivers, but the cable 
shield of this unit goes directly to the chassis, so on an AC/DC 
receiver you'd want to be sure to connect it to a "power line isolated" 
point in the receiver.


73 de Phil  KO6BB
My DXing tools (RECEIVERS), all fully overhauled:
   Hammarlund SP-600, 18 tubes, digital disp. (Circa 1952)
   National NC-60 Special, 5 tubes (Circa 1960)
   Heathkit Mohican  (Circa 1962)
   Icom IC-751 Digital Transceiver  (Circa 1986)
   Grundig S350 Digital Portable (Circa 2004)

THE BEACONEER'S LAIR:  http://www.geocities.com/ko6bb/
QSL GALLERY: http://photobucket.com/albums/y123/KO6BB/
Merced, Central California,    37.3N  120.48W  CM97sh

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