Cartridges are standard and can be found at many retailers. Here is the filter we use: http://www.protectplus.com/PD-Water-Filtration-82/DuPont-Universal-Valve-In-Head-Whole-House-Filtration-System-PF3800-663 https://www.menards.com/main/plumbing/water-filtration-softeners/whole-house-filtration-systems-accessories/dupont-trade-universal-bypass-valve-in-head-whole-house-filtration-system/p-1444451632930-c-8685.htm?tid=-7066038695119647458 ... https://www.youtube.com/watch?v=gyXPY9FnWOI

Link to the manual for those who need it: https://www.asaelectronics.com/downloads/dl/file/id/56/awm910_owners_manual.pdf Here are eBay links to some D/A converters, one is straight-through and the other is for TVs that output Dolby Digital and need it decoded to PCM: Non-Dolby: https://www.ebay.com/itm/Optical-Coaxial-Toslink-Digital-to-Analog-Audio-Converter-Adapter-RCA-L-R-DC-5V/272829038007 Dolby: https://www.ebay.com/itm/Dolby-Digital-Optical-Converter-Coaxial-Toslink-to-Analog-RL-RCA-Audio-Decoder/ In this video I show the process for connecting the RV TV to the Jensen radio's aux in on the rear by using a digital to analog audio adapter. RV is a Jayco JayFlight 19RD ... https://www.youtube.com/watch?v=ENVQCFk4aaY

Donate here: http://www.radiostorm.com/donate or patreon: http://www.radiostorm.com/patreon I read the thank-yous over the air during our live time! #radiostorm #oldies #vinyl #records #45rpm ... https://www.youtube.com/watch?v=Aq2nzE7M5Rc

Fred "August" Campbell has a website also: http://www.augustcampbell.com/home-nosound.html