George KJ6VU takes us through a thorough deep dive of the design of the 4-Port Coax Relay Project.  We talk about the five major sections of the project - RF circuit switching with relays, control via PIC Microcontroller, the power supply, the user interface, and serial communications.  Each section provides a reference design that could be leveraged in other projects. Pick up the 4-Port Coax Relay Project Partial Kit from our store - https://www.hamradioworkbench.com/store/p6/4-Port_Coax_Relay_Partial_Kit.html 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/ Save $100 on the Digilent Analog Discovery 2 Package by using code “HamRadioWorkbench2018” in your cart prior to checkout - https://store.digilentinc.com/ham-radio-workbench-bundle/ $130 Ham Radio Notebook? - Microcenter Winbook TW110 - http://www.microcenter.com/product/496689/TW110_116_Laptop_Computer_-_Black Windows 10 64 bit Drivers for the Microcenter Winbook TW110 are from the Medion Akoya e222x series - https://www.medion.com/gb/service/_lightbox/treiber.php?msn=30023301&prod=MEDION%20AKOYA%20E2228T%20(MD%2061050)%20A-UK Raspberry Pi B 3/3+ USB Boot Timeout 2 or 5 seconds - https://www.raspberrypi.org/forums/viewtopic.php?t=209416#p1313554 Microcenter Inland MLC SSDs - http://www.microcenter.com/search/search_results.aspx?Ntt=inland+ssd Stuart KB1HQS Portable Gear Loadout YouTube Video Series - https://www.youtube.com/watch?v=y3PF-f4-AUo&list=PLP-XG_VNrkF5ra0ptG0DGtbcBp53sUOii Portable Displays 13” 5V/USB FHD Display - https://www.amazon.com/Raspberry-1920X1080-Resolution-Portable-Speakers/dp/B0787RF8YB/ref=sr_1_4?ie=UTF8&qid=1531780288&sr=8-4&keywords=elecrow+display&dpID=61a49caCo-L&preST=_SY300_QL70_&dpSrc=srch 11” 12V FHD Display - https://www.amazon.com/Elecrow-1920X1080-Xbox360-Display-Raspberry/dp/B01NB17E0Z/ref=sr_1_6?ie=UTF8&qid=1531780288&sr=8-6&keywords=elecrow+display&dpID=51wXe7ZlNuL&preST=_SY300_QL70_&dpSrc=srch 10” 12V FHD Display - https://www.amazon.com/Elecrow-Raspberry-1920X1080p-Resolution-Speakers/dp/B076GZVCP2/ref=sr_1_7?ie=UTF8&qid=1531780288&sr=8-7&keywords=elecrow+display&dpID=51vX31Yt0SL&preST=_SY300_QL70_&dpSrc=srch 11” 5V/USB FHD Display - https://www.ebay.com/itm/11-6Inch-1920x1080-IPS-Portable-Monitor-For-Raspberry-PS3-PS4-XBOX-HDMI-Display/273163427331?hash=item3f99cf1e03%3Ag%3AeGIAAOSw-GBbQvrA&_sacat=0&_nkw=portable+hdmi+display&_from=R40&rt=nc&LH_TitleDesc=0%7C0 Multiple Options in 10” and 11” 12V Displays - https://www.ebay.com/itm/10-1-11-6-LED-LCD-Monitor-Portable-HDMI-VGA-Display-Screen-For-Raspberry-Pi-PS4/273148282168?var=&hash=item3f98e80538 EEVBlog Debouncing Video - https://www.youtube.com/watch?v=Nj-Q8FQxHhU&t=4s Swordfish basic - http://www.sfcompiler.co.uk/swordfish/