HERE IS A PICTURE OF ANOTHER RECEIVER BUILT INTO THE 3D PRINTED ENCLOSURE FROM KK6US

THE PRINTED CIRCUIT BOARD COMPONENT LAYOUT

THIS IS THE OPTIONAL 1.88" DISPLAY

THIS IS THE REQUIRED 1.44" DISPLAY

WHEN WINDING THE INDUCTORS, USE #28 ENAMEL WIRE. THE ENCODERS USED HERE ARE DESIGNATED AS EC-11 OR SIMILAR.

Here are two photos of a 3D printer enclosure as designed and built by KK6US. Files to make this are listed below.

THE FOLLOWING FILES CAN BE DOWNLOADED BY CLICKING ON THE GREEN LINKS BELOW:

NEW SOFTWARE FOR DIGITAL MODES DOWNLOAD

NEW CONTROL SOFTWARE, 1.44" DISPLAY AND AD9850 DDS MODULE

NEW CONTROL SOFTWARE, 1.44" DISPLAY AND AD9851 DDS MODULE

NEW CONTROL SOFTWARE, 1.8" DISPLAY AND AD9850 DDS MODULE

NEW CONTROL SOFTWARE, 1.8" DISPLAY AND AD9851 DDS MODULE

OPTIONAL BROADCAST BAND REJECT FILTER

LISTING OF THE PARTIAL KIT COMPONENTS

COMPONENT LISTING FOR THE RECEIVER

TYPICAL VOLTAGES ON THE PC BOARD FOR TROUBLESHOOTING PURPOSES

HERE IS A LINK TO FILES FOR A 3D ENCLOSURE FOR THIS RECEIVER DESIGNED BY KK6US

HERE IS A LINK TO A DOCUMENT DETAILING THE INITIAL STARTUP PROCEDURE FOR THE RECEIVER

THIS DOCUMENT SHOWS SCANS OF THE ADJUSTABLE CRYSTAL FILTER AT VARIOUS CONTROL VOLTAGES.

THIS DRAWING SHOWS THE TUNE AND STEP ENCODER WIRING DIAGRAM.

CIRCUIT DIAGRAM AND DETAILS FOR A SIMPLE AGC SYSTEM FOR THE RECEIVER (RETAINS MANUAL RF GAIN FUNCTION)

PARTS LISTING FOR THE SIMPLE AGC CIRCUIT

If you find the audio output level from your pre-amp is not high enough to drive this circuit, change the value of R1 or jumper it out.

This links to the article about the simple AGC circuit