Sorry, not having any electronics knowledge I don’t know the answer to your question!
One other bit of info that might be useful is that when an iPad and PAW plugged into Powerbank the noise issue happens. When just an iPad no noise. When just a PAW noise. Would this indicate interference coming from PAW unit itself rather than Anker power bank?
Hi Merlin,
I’m a bit confused by the above statement. You start by saying that the noise happens when you have [both] PAW and your iPad plugged into the [same] powerbank, which could (as Jeremy suggests) be due to a low charge level iPad grabbing lots of power and causing the PAW supply to go low voltage. For this reason we recommend NOT running a second device from the same (battery or low power) source as PAW. This would show as a voltage ‘Error’ or ‘Warning’ and Throttle = ‘throttled’ or ‘warning’ in the Status line on the PAW Home Screen. Can you check this?
You then go on to say ‘With just an iPad no noise. With just a PAW noise.’ so are you saying that you get the interference whether or not the iPad is connected to the [same] powerbank - i.e. all the time?
I certainly experienced white noise interference in the early days when running a homebuilt PAW and a low charge tablet (android or iPad) from the same powerpack or poor quality aircraft power supply, but the noise always went away if the charge lead was removed from the tablet or if left to its own devices, when the charge level in the tablet got high enough to reduce the current draw.
I now use a Charge2 / Charge4 setup, so no longer have this problem. I do, however, also experience higher than desirable ‘white noise type’ interference on certain frequencies, such as Newcastle Approach (124.380), Leuchars Approach (126.500) and in some areas on Safetycom (135.480), but hadn’t associated this with PAW, as other frequencies such as East Fortune (118.755) and Edinburgh (118.705 and 121.205) are completely clear.
I am away from home this coming week and definitely not flyable up here at the moment anyway, but will investigate further when I get back home.
In the meantime, it would be worth trying a clip-on ferrite noise suppressor (available in various sizes from Amazon or e-bay) on the power lead where it goes into your PAW to see if this cures or reduces the problem. If it does help, you can try adding a second one in tandem as this can improve things further.
Regards
Peter