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Parts List Open Broadcaster EAS Relay
Kit with diagram and assembly photos of a complete RS232 GPIO Switching Relay . Special Thanks to Pippin Technical supplier of parts in a kit form if that has any appeal for around $150 or the completed switching relay. Full assembly takes 2 +/- hours for all mounting, cable prep, soldering and testing with the OB Alert Player. Might take a bit longer for groups that have never built one before. Get a group together for a DIY maker space hands on training project.
Bill of Materials
|Item Description||Quantity||Item No.|
|Broadcast Tools LR-5 latching relay||1||LR-5|
|Hammond Box ABS GRAY 6.58”L X 4.21”W||1||HM225-ND|
|Neutrik 3 Pin Nickel Male Inline XLR||2||NC3MX|
|Neutrik 3 Pin Nickel Female Inline XLR||4||NC3FX|
|DB15(F) Connector and Shell||1||Shop Supplies|
|Semiconductor, Wiring and dressing||1||Shop Supplies|
Full assembly takes 2 +/- hours for all mounting, cable prep, soldering and testing with the OB Alert Player. Might take a bit longer for groups that have never built electronics projects before.
Dave Currie of Faith FM Waterloo Ontario made this really professional EAS setup using a Intel NUC and a custom relay. Nice work Dave!
Why bother buying a 15.00 inline adaptor when you can make it yourself with a few parts and a soldering iron.
‘H’ or ‘T’ pads may also be fabricated to accomplish the same level of attenuation.For a balanced signal, use an H-Pad: input_impedance=30k Ω, output_impedance=10k Ω. The example below provides approximately -20dB of attenuation using resistors R 1/2= 12k Ω; R 2=3.3k Ω; R 3/2=3.3k Ω (ground wires should also be connected).