LF: Digital receiver

[Dick Rollema <dickrollema@casema.nl>]

To All from PA0SE

German DARC magazine CQ-DL 3-2003 contains a review of a digital
receiver designed and made by HB9CBU.
It covers 1.65 - 30 MHz.

See attached block schematic diagram.

The following results were obtained:

Noise factor 15.5 dB

IM free second order dynamic range 89.2 dB

Second order intercept point 72.dBm at receiver input
 
IM free third order dynamic range 95.1 dB

Third order intercept point 14.dBm (at receiver input) 

Unfortunately I do not have info on the filter at the input because I do
not possess the magazine anymore.

73, Dick, PA0SE