[Drake] R-4C aligment

[pulsarxp at earthlink.net]

It's been my experience too that I find very very little difference if any
at all by using the resistor to broadband and lower the Q of the circuit.
Go do the alignment without the resistor.  I think you will be satisfied
doing the job without the resistor.
Lee
w0vt






> Steve -
>
> What you are doing is paralleling a 10k resistor across the Primary of 
> T4 and another across the inductor of T3 to broaden their response while 
> tuning.  The one across T4 is the one to ground, and the one across T3 
> is to B+.
>
> The Rotor contacts are the ones with the little airwound coil connected 
> between them.  You can connect to either end of the small coil.  Try not 
> to disturb those coils when making your attachment.
>
> Personally, in my experience, unless someone has been "fixing" the 
> receiver, there is very little likelihood that either adjustment will be 
> needed.   Also, if they are indeed "close" to being correct, you can 
> carefully adjust them without the resistors.   The resistors are just to 
> lower the "Q" of the inductors to make the peak easier to find if it's 
> way off.
>
> 73, Garey - K4OAH
> Atlanta
>
> Drake C-Line Service Manual
> <http://www.k4oah.com>
>