QRP-Labs QDX Kit Build - Receiver



Published
In this video I build the receiver portion of the QDX digital radio from QRP Labs
https://qrp-labs.com/qdx.html

Here's the second part of the build
https://www.youtube.com/watch?v=7wgnr-Mgv7M

Here's the manual and operating guide
https://qrp-labs.com/images/qdx/manual_1_11.pdf
https://qrp-labs.com/images/qdx/manual_operation_1_03.pdf

0:00 Intro and QDX description
1:00 Walkthrough of board
2:27 A look under the microscope
4:18 Walkthrough of schemartic
7:36 My build order (done at my own risk ;) )
11:07 uController up and running
13:40 Quick walkthrough of LPF switching
16:17 Building the LPF
17:10 Winding the LPF toroids
18:00 Testing the LPF toroids
16:35 Installing L12 the multi-tap bandpass inductor
23:08 Winding the Trifilar splitter T2
26:06 Determining T2 leads
28:46 *** On the Air ***
30:40 Doing some voltage measurements - LPF
32:47 Testing X5
33:57 Testing X6
34:45 Walkthrough of WSJTX setup and wrapup
Category
Audio
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