Technical Forums

We intend to use this page to showcase committee work, special projects, individual member work, and other areas where Hams can share knowledge.

Special Projects

Ensemble RX LF/HF kit - Software Defined Radio

The club has agreed to work on this kit as a club project with some members interested the receiver and some in the transceiver. Here are some reference links or information:

August 2011 Meeting -- Ensemble II: Tips and Lessons Learned

The January 2011 QST (pg. 32) has an article on SMT, reflow soldering by Jim, VE5FP.

Builder's Notes - Receiver

Builder Information - Transceiver

Freeware Software Defined Radio program

Use of the Si570 by Holland Ham PE0FKO. This software is the download to provide the driver for the Tiny 85 as a USB device and also the program that changes the local oscillator frequency and the bandpass filter selection.

YouTube video of HDSDR in use

Picture of board provided by Bill, NØCU    see note from Bill, NØCU

Softrock Transformers 1, provided by Bill, NØCU

Desoldering SMT (online article)

Please note: if you saved and are using the SMT picture provided by Larry, KØNA, as your guide for doing your SMT, the U11 dual op amp 6231 should be 180 ° from Larry's picture. Please see Builder's notes for placement.

More information to follow.

--------------------------------------------------------

We have worked on the SW40+ Transceiver as a Club project.  It was a great hands-on project to review the theory as well as the working aspects of ham radio.  Here are links to  documents and websites that will help you better understand how the SW-40+ works.

Small Wonder Labs                          

Elmer 101 SW40+ FAQs      

So You Want To Be a Builder, Huh?

KF4TRD Lessons for the SW40+

Elmer 102: The Wilderness Sierra

Lesson 1 (ppt -122k)                         Lesson 1 (pdf - 76k)

Lesson 2 (ppt - 207k)                        Lesson 2 (pdf - 87kl)

Lesson 3 (ppt - 174k)                        Lesson 3 (pdf - 90k)

Lesson 4 (ppt - 208k)                        Lesson 4 (pdf - 200k)

Lesson 5 (ppt - 163k)                        Lesson 5 (pdf - 206k)

Lesson 6 (ppt - 134k)                        Lesson 6 (pdf - 90k)