[Elecraft] K2 Softrock IF - solved

[Steve Bunting]

Hi Folks,

Thanks for all the replies. Mr Soft Rock, Tony Parks, kindly emailed me 
all the details through. I will post them here so that people searching 
the archive can find them in the future:

The K2 specific components are listed below:

4.915 MHz SoftRock Lite II for K2 IF application

Then SoftRock Lite II operates with crystal frequency divided by 4.  The 
Lite II center frequency will be about 4.919 MHz and when used with a 
soundcard that can sample at 48 kHz will give IF band coverage from 
4.895 MHz to 4.944 MHz.

C10 100pF
C11 not used

L1 43T of #30 on a T25-2 core (6.4uH)
T1 12T of #30 on primary and 6T of #30 on each of two secondary windings 
bifilar over the top of the primary on a T25-2 core. (0.5uH on primary).

C3 180pF
C4 2200pF

Crystal X1 is 19.68 MHz SMT type with crystal between pins 1 and 3.

73
Steve
M0BPQ