​Smitty is back to talk to us about the new M17 Open Source Digital Radio System Project - an all encompassing 100% open source design that aims to implement digital radio communications similar to DMR but built on 100% open technology.

PERMALINK - https://www.HamRadioWorkbench.com/podcast/M17-Open-Source-Digital-Radio-System

Our Website - http://www.hamradioworkbench.com/
Follow us on Twitter - https://twitter.com/hamworkbench
Contact us for feedback and ideas - http://hamradioworkbench.com/contact
Connect with us on Facebook - https://www.facebook.com/groups/hamradioworkbench/
BrandMeister Talkgroup 31075 - https://hose.brandmeister.network/group/31075/

Smitty’s github - https://github.com/SmittyHalibut/

Smitty’s Youtube - https://www.youtube.com/channel/UCbqAVJZju972nkt06BshQqQ?view_as=subscriber

Smitty on Twitter - https://twitter.com/smittyhalibut?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor

M17 Open Source DMR-Like Hardware and Software System - https://teletra.pl/M17/blog/summary

M17 Forums - https://teletra.pl/forum/index.php#c2 

M17 Github - https://github.com/sp5wwp/M17_spec/blob/master/M17-Protocol.md

M17 IRC - http://www.geekshed.net/  The #M17 channel.

KB6NU Blog Post on M17 - https://www.kb6nu.com/m17-an-open-source-dmr-like-system/

Travis Goodspeed’s MD380tools - https://github.com/travisgoodspeed/md380tools

Codec 2 - https://en.wikipedia.org/wiki/Codec_2

FreeDV - https://freedv.org/

Bruce Perens’ “HT of the Future” - https://perens.com/2019/05/23/ht-of-the-future-new-design/

Bruce Perens on Open Radio on QSOToday Podcast - https://www.qsotoday.com/podcasts/k6bp

Amateurs and Pactor - https://hackaday.com/2018/11/26/fcc-gets-complaint-proposed-ham-radio-rules-hurt-national-security/

​Pactor and the FCC - https://ecfsapi.fcc.gov/file/10808597817982/ExParteCommunicationAug8.pdf

​The BITX40 is a $60 Arduino controlled 7 watt QRP SSB 40 meter transceiver designed and built by Ashar Farhan VU2ESE.  They are available as a “kit” from http://www.hfsigs.com/ .  The assembly only involves soldering wires for things like speakers, power, and microphones and also finding a suitable case.  We originally spoke about the BITX40 back in Episode 26 (http://hamradio360.com/index.php/2017/06/20/ham-radio-360-workbench-26-the-bitx40-transceiver-an-introduction/)
Mark “Smitty” Smith KR6ZY is back with us again to share with us the modifications and upgrades he’s made to the original BITX40 over the summer.

In this episode, we discuss adding upper sideband capabilities, adding an IF shift, and even multibanding the radio!  Smitty shares lots of great resources and ideas in this episode of the Workbench.

Smitty KR6ZY can be found online on twitter @smittyhalibut (https://twitter.com/smittyhalibut) and on YouTube at https://www.youtube.com/user/SmittyHalibut

Banner photo courtesy of (and used with permission from) Randy K7AGE - https://www.youtube.com/user/K7AGE

Cale K4CDN is taking a much deserved break for the rest of the year!  -http://hamradio360.com/index.php/2017/09/19/ham-radio-360-lessons-from-irma-and-my-vacation/

Workbench Autodesk Eagle board layout tutorial with KF7IJZ, KJ6VU, W6KWF, and KR6ZY - https://www.youtube.com/watch?v=IYoorqf2llE

OSHPark Printed Circuit Board Manufacturer - https://oshpark.com/

ESP01 / ESP8266

• http://www.instructables.com/id/Getting-Started-With-the-ESP8266-ESP-01/
• https://www.sparkfun.com/products/13678
• ESP Libraries Source https://github.com/esp8266/Arduino
• Arduino IDE - https://www.arduino.cc/en/Main/Software
• ESP8266 in Arduino - https://learn.sparkfun.com/tutorials/esp8266-thing-hookup-guide/installing-the-esp8266-arduino-addon
• Teensy - https://www.pjrc.com/teensy/
• ARRL HF Data Rates - http://www.arrl.org/news/arrl-files-symbol-rate-petition-with-fcc
• Hardware random number generator - https://en.wikipedia.org/wiki/Hardware_random_number_generator

RTL-SDR v3 with Direct Sampling - https://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/

QRP Labs Filter Kits

• https://www.qrp-labs.com
• LPFs: https://www.qrp-labs.com/lpfkit.html
• BPFs: https://www.qrp-labs.com/bpfkit.html
• HF BPF 10-band Set - http://shop.qrp-labs.com/BPFSET

D-STAR QSO Party - https://www.icom.co.jp/world/dqp/

Silicon Dust HDHomeRun OTA TV to IP Box - https://www.silicondust.com/

Smitty’s BITX40 Intro Video - https://www.youtube.com/watch?v=3ESph5JCOpw

BITX40 Mods

• Groups.io - https://groups.io/g/BITX20
• BitX Hacks - http://bitxhacks.blogspot.com/
• Raduino Software - https://groups.io/g/BITX20/wiki/Raduino-Topics
• Allard’s Software - https://groups.io/g/BITX20/wiki/Allard%27s-Raduino-Code
• Software upgrades https://github.com/amunters/bitx40/
• Make it do CW http://bitxhacks.blogspot.com/2017/03/nd6t-bitx-cw-update.htmlhttp://bitxhacks.blogspot.com/2017/02/putting-bitx-raduino-on-cw.html
• USB and LSB (for digital) - https://groups.io/g/BITX20/wiki/USB-LSB-operation
• Front panel and case - https://www.banggood.com/Electronic-Plastic-Shell-Cartridge-Handle-Project-Case-Desk-Instrument-200x175x70mm-p-1035473.html?rmmds=myorder
• Optical/Rotary Encoder Tuning - https://groups.io/g/BITX20/topic/mouse_encoder/5553536?p=,,,20,0,0,0::Relevance,,mouse,20,2,0,5553536
• Dr. Jack Purdum W8TEE VFO TFT - https://groups.io/g/BITX20/topic/5116056
• AGC Board - http://kv4qb.blogspot.com/2016/11/bitx-40p-building-part-1.html

SteppIR Urban Beam - http://www.steppir.com/UrbanBeam

This week on the Workbench Podcast; Smitty KR6ZY joins George and Jeremy to talk the BitX40. The BITX40 is a popular $60 40M 7W SSB transceiver “kit” available from http://www.hfsigs.com/ .  Smitty gives a great general introduction on the radio, its capabilities, and its opportunities.  We encourage our listeners to order theirs now as we will be doing a series of segments over the next few episodes to highlight opportunities for this little radio!

Antenna Analyzer Boards – Here with less than 50 now in stock

Posted rev 1.0 of the Power Board firmware by Ed W6ELA on www.360workbench.com

Interview on 3D Printing Today – 191_3DPrinting_Today

SDR – AirSpy – http://www.airspy.us

SDRSharp – Software Links

Diamond D220R – Discone Antenna

FM Broadcast Band Filter – Broadcast FM Block Filter (88 – 108 MHz Block) by RTL-SDR Blog –

AM Broadcast Band Filter – Broadcast AM Reject High Pass Filter (2.6 MHz HPF) by RTL-SDR Blog

ADSB Filter – https://v3.airspy.us/product/fp-1090-ha5s/

Lego Saturn V – sold out from LEGO, available on Amazon for an additional $100+ 

BitX40 – http://www.hfsigs.com

KR6ZY’s Intro to the BitX40 Video – https://www.youtube.com/watch?v=3ESph5JCOpw

BitX40 Hacking Blog – http://bitxhacks.blogspot.com

BitX40 Community – https://groups.io/g/bitx20

Solder Smoke Podcast – http://www.soldersmoke.com

Solder Smoke – Global Adventures in Wireless Electronics