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Interference, point me in the right direction.


Josh00333
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This one is strange. 

After my Midland 275 install I tested all the channels (scan) and had no issues, drove around the block to test it. I took a road trip and after being on the freeway a few min (10 maybe) I got interference on 19. Scan would pick it up and just stay. Very annoying. Got worse to 18-20 all stuck. Tried turning up sq to max hoping it would skip it, no joy.

I moved the head a foot just to see if that helped, nada. 

After my trip took my handheld 905 with me, retested. Driving around w a cold truck no interference on the 905 or the 275. But once the truck is warmed up 10 min or so it comes back in on the 275.

I tried turning off/on AC, turning off the hvac, turning up down the hvac fan, turning off/on car play, turning off the stereo head all together. Nada. 

I'm taking a wild guess I have some power or ground interference that is popping up once the car is warmed up/the alternator is not charging from start up. 

I grounded the head on a factory ground in the cab, took power off the factory supplied ign hot lead (part of the auxiliary switch group). Rig is a 2021 Jeep Gladiator JT. I really like coming off the ign hot, but think I need to run a dedicated hot and ground

Thoughts? 

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On 12/19/2021 at 8:03 AM, Josh00333 said:

This one is strange. 

After my Midland 275 install I tested all the channels (scan) and had no issues, drove around the block to test it. I took a road trip and after being on the freeway a few min (10 maybe) I got interference on 19. Scan would pick it up and just stay. Very annoying. Got worse to 18-20 all stuck. Tried turning up sq to max hoping it would skip it, no joy.

I moved the head a foot just to see if that helped, nada. 

After my trip took my handheld 905 with me, retested. Driving around w a cold truck no interference on the 905 or the 275. But once the truck is warmed up 10 min or so it comes back in on the 275.

I tried turning off/on AC, turning off the hvac, turning up down the hvac fan, turning off/on car play, turning off the stereo head all together. Nada. 

I'm taking a wild guess I have some power or ground interference that is popping up once the car is warmed up/the alternator is not charging from start up. 

I grounded the head on a factory ground in the cab, took power off the factory supplied ign hot lead (part of the auxiliary switch group). Rig is a 2021 Jeep Gladiator JT. I really like coming off the ign hot, but think I need to run a dedicated hot and ground

Thoughts? 

I always run wire directly from the battery to my rigs unless it is a portable quick install, then I have used lighter plugs (no good!).  I still get interference sometimes, but not too bad.

Is your antenna grounded?

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