View Single Post
  #5   Report Post  
Old December 10th 09, 08:59 PM posted to rec.radio.amateur.boatanchors
No Name
 
Posts: n/a
Default Sort of boat anchor

Scott,
I don't think the base and collector are swapped as the biasing looks
right as drawn on the presumed base, plus, if so then there would be no path
for base current.
Thanks for the offer of the Lafayette, I'd love to get a look at it.

Bob



"Scott Dorsey" wrote in message
...
In article , b wrote:
Thanks for the response. I found that site a few days ago, and was
playing
around trying to get that circuit to work, until I noticed that there is
no
DC path for collector current for Q1.


Hmm... you're right, that's really creepy. You think maybe base and
collector
are swapped here?

I was thinking at first that maybe the base leakage did the trick, which
could be possible if it's a germanium type.

Also, there seems to be an issue with how L1 and L2 and the associated
caps
are connected. I moved a few things around and got Q1 to work as an
oscillator and a superregen detector (I think), but have not built up the
audio and the switching circuits yet.
I'm still hoping to find some other examples of these cute little rigs.


I can send you a Lafayette one if I can find it. You're welcome to draw
the
schematic out.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."