[HBR] HBR-11 Template??

B Smith smithab11 at comcast.net
Fri Jun 17 12:41:33 EDT 2011


Thanks  ian

I am familiar with the Command Set wiring and like 
I said  I have tried using the Command set BFO 
coil
 in its original configuration with the feed back 
winding and have not been successful. I would be
interested in hearing from any one who has 
successfully used the coil in a Hartley
configuration in a HBR receiver. We have plenty of 
theory but I would like to see an actual
schematic of a "tested" circuit.    I have of 
course use the coil in a colpitts configuration 
but
this required some modification of the coil.  Info 
on what I have done can be found at:
(http://k4che.com/HBR/BFO%20Coil%20Page%201and%20photos/BFO%20Coil%20Page%20%201.htm)

--------------------------------------------------
From: "Ian Wilson" <ianmwilson73 at gmail.com>
Sent: Friday, June 17, 2011 12:03 PM
To: "HBR Receiver List" <hbr at mailman.qth.net>
Subject: Re: [HBR] HBR-11 Template??

> Hi Breck,
>
> Here's what the circuit looks like in the 
> Command Set receivers:
>  - triode plate to pin 1 (top end of tuned 
> winding)
>  - triode grid (through C/grid leak) to pin 2 
> (top end of untuned winding)
>  - decoupled B+ to pin 3 (lower end of tuned 
> winding)
>  - can to ground (there are three internal 
> connections to ground)
>
> There are schematics on line, just happened to 
> have the CQ Command Sets
> book to hand.
>
> 73, ian K3IMW
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