-=> Roy J. Tellason said to Greg Mayman
 -=> about "*BIG* TRANSISTORS" on 01-28-04  04:06.....

 RJT> I may have left the nails out.  I was in grade school at the time...  
 RJT> :-) 

Hmmm... you lost me in there somewhere. What function did the
board perform? I can imagine it holding nails for the
experimenter to solder stuff to...

 RJT> I'd love to have the space to accumulate some of that old stuff again.
 RJT> Just now there's a big old dual tuning cap around here,  much of the
 RJT> rest of that stuff is just *gone*.

I salvaged an HF transmitter loading coil and variable cap that a
friend was throwing out. It was jes' too beautiful to go into the
junk pile.

Now what can I do with a coil wound from 1/4 inch silver-plated
copper tube, with taps brought to a massive rotary switch, and a
dual-gang tuning cap where the plates are about 1/8 inch thick
and 1/4 inch spaced?

 GM> A total of 5 transistors in the whole thing, and it still works,
 GM> although the 9 volt battery it was designed for has long 
 GM> disappeared from the market!

 RJT> What kind was that?  I seem to remember a few odd variants on them.

FWIW the label inside the case says:

BUSH RADIO LTD  AP-63335  MODEL TR-90C 9V BATTERY
WARNING: reversed connections may damage transistors.
Replacement batteries are
VIDOR T6007, DRYDEX DT7, EVER READY PP7, or equivalents.

Note the "EVER READY" -- two words 

I have replaced the battery clips and fitted a small 9v ENERGISER
552. It still worked when I tested it just now.

It is a two band set, long wave 1100 to 1800 metres (270 - 170
KHz) and the normal MW band. Of course there is nothing to be
heard on the LW band, apart from a weak image of a high powered
MW station near here.

From Greg Mayman, in beautiful Adelaide, South Australia
   "Queen City of The South"    34:55 S  138:36 E

... Change is inevitable, except from a vending machine
___ Blue Wave/386 v2.30

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