XPost: alt.home.repair, sci.eletctronics.design, rec.autos.tech   
   From: NONONOmisc07@fmguy.com   
      
   In alt.home.repair, on Tue, 25 Jul 2023 20:54:33 -0500, Jim Joyce   
    wrote:   
      
   >On Tue, 25 Jul 2023 06:04:25 -0400, micky  wrote:   
   >   
   >>When a cellphone is a hotspot and it streams web-radio to a real radio   
   >>(in this case the car radio) is there any feedback from the radio to the   
   >>cellphone or the app that is running?   Would the app know if I had   
   >>turned the radio off, or changed input so it was no longer detecting and   
   >>playing the cellphone signal?   
   >   
   >To me, 'hotspot' implies WiFi, but I have no experience with streaming over   
   WiFi   
   >so I'm going to talk about Bluetooth (BT).   
   >   
   >I frequently stream SiriusXM via BT from the SXM app on my phone to the radio   
   in   
   >my pickup, the radio in my garage, or the music system in my home theater.   
   When   
   >I'm streaming via BT and I turn off the receiving device, the SXM app   
   >automatically switches to Pause within about 1-3 seconds.   
   >   
   >It's clearly a two-way protocol. I'm not sure how my experience relates to you   
   >and your situation, if at all.   
      
   Well, by golly, you were exactly right.  Sitting still I could watch the   
   app go to Pause in less than 2 seconds after I switched from CD Changer   
   (Bluetooth)** to AM.  More than half the time it would switch back to   
   Play when I switched the radio back to CD Changer.   
      
   **This is a car and radio from 2005 and didn't come with Bluetooth.   
   GTA Carkit has add-ons for many older cars to connect the phone to the   
   radio, to play phone calls and webradio through the much better car   
   radio speakers.   I think it was about $140 and well worth it.  Also has   
   an AUX input.  There might be another company that sells something   
   similar.   
      
   It works in my and I think most cases by plugging into the CD Changer   
   jack in the back of the radio.  I didn't have and didn't want a CD   
   changer anyhow.   
      
   If the phone is on and has once been paired with the car, it connects   
   when the car is turned on.  If the car is on, I think one has to do   
   something on the phone when you turn the phone on.   I've noticed that   
   bluetooth is so clever that when I'm wearing bluetooth headphones and I   
   turn the car on, the car takes over the bluetooth without my doing   
   anything,   
      
   I could have known bluetooth was 2-way because, when I turn the car off,   
   or turn off whatever the phone is connected to, the sounds from the   
   phone either switch to the phone's speaker or stop altogether.   Of   
   course changing from CD Changer to AM or FM is not the same as turning   
   the car off, and it's still paired and connected because when I press CD   
   changer again, it starts playing in under 2 seconds (in those cases   
   where it restarts on its own.)   
      
   So all those times I thought I was killing time until the ad was over, I   
   was just fooling myself!  And though the same ad is played 5 or 6 times   
   an hour, at least it's not so omnipresent that every time I switch back,   
   another copy of the ad is playing.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)