Oudie Supplemental Power Pack

So I recently got a dashcam for my crew vehicle and am trying to find a power supply that doesn't break squelch and introduce a crapload of noise into all receptions... The one that came with the camera and a couple others I tried also made my FM radio near useless for weak stations.

I sent an email to Powerwerx about this adapter and the response was that it is a lot cleaner than most. And since these guys are in the ham radio biz, I would expect they understand RF interference. I'll order one and see if it works in my truck and report back.

5Z

On Wednesday, September 27, 2017 at 7:34:35 AM UTC-7, Dan Marotta wrote:
Yeah, I tried one of those.Â* It was worth a shot, but what a racket
it caused in the radio!
....
https://powerwerx.com/usbbuddy-power...device-charger

Tom,

I've been flying with a USBbuddy for 3 years - it's powering my iPhone 6. It has not interfered with my Becker AR4201 at all.

Before buying the USBbuddy I had first tried battery packs (one with an on/off switch), and found that my radio broke squelch on all frequencies.

-John, Q3

On Wednesday, September 27, 2017 at 1:53:12 PM UTC-4, wrote:
So I recently got a dashcam for my crew vehicle and am trying to find a power supply that doesn't break squelch and introduce a crapload of noise into all receptions... The one that came with the camera and a couple others I tried also made my FM radio near useless for weak stations.

I sent an email to Powerwerx about this adapter and the response was that it is a lot cleaner than most. And since these guys are in the ham radio biz, I would expect they understand RF interference. I'll order one and see if it works in my truck and report back.

5Z

Thanks John,
I've ordered the USBuddy and we'll seee how it works.

I also use a Anker PowerCore (see link below) to run my iPhone and actioncam with no perceived noise on my radio. Went with the extra battery just to be sure I don't drain the avionics stuff with the iPhone as it seems to pull a lot when actively navigating.

https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1



I also have a On Wednesday, September 27, 2017 at 11:40:05 AM UTC-7, John Carlyle wrote:
Tom,

I've been flying with a USBbuddy for 3 years - it's powering my iPhone 6. It has not interfered with my Becker AR4201 at all.

Before buying the USBbuddy I had first tried battery packs (one with an on/off switch), and found that my radio broke squelch on all frequencies.

-John, Q3

On Wednesday, September 27, 2017 at 1:53:12 PM UTC-4, wrote:
So I recently got a dashcam for my crew vehicle and am trying to find a power supply that doesn't break squelch and introduce a crapload of noise into all receptions... The one that came with the camera and a couple others I tried also made my FM radio near useless for weak stations.

I sent an email to Powerwerx about this adapter and the response was that it is a lot cleaner than most. And since these guys are in the ham radio biz, I would expect they understand RF interference. I'll order one and see if it works in my truck and report back.

5Z

I'd think the RigRunner 4004-USB would be best for the job. 4x fused 12v outlets plus two USB ports, in a shielded case.
Jim
https://powerwerx.com/west-mountain-...unner-4004-usb

On Wednesday, September 27, 2017 at 2:54:49 PM UTC-7, JS wrote:
I'd think the RigRunner 4004-USB would be best for the job. 4x fused 12v outlets plus two USB ports, in a shielded case.
Jim
https://powerwerx.com/west-mountain-...unner-4004-usb

I wish they and other manufacturers would spec the USB power output. These could supply 0.5A up to 3.0A total or more and still be considered meeting a USB standard. I've seen some awful low actual power delivered from cheap USB adapters, I expect better than average quality from RigRunner but wish vendors would just clarify with specs.

And it's a reminder that modern small devices can draw significant power. As an example an iPhone 7 Plus has a 2.68 Ah battery at 3.8 V. Just charging that battery from flat, and assuming 80% charge efficiency will suck around 1 Ah of charge from a glider 12V battery. On top of whatever it takes to run the device at high screen brightness. Which reminds me I want to remeasure power use and charging of a few modern devices..... its pretty amazing the compact compute and power capacity we carry around nowadays.

I've got to replace the (not cheap/no brand) power supply in my truck, which struggles to deal with a flat iPhone 7 Plus.

On Wednesday, September 27, 2017 at 3:43:56 PM UTC-7, Darryl Ramm wrote:
And it's a reminder that modern small devices can draw significant power. As
an example an iPhone 7 Plus has a 2.68 Ah battery at 3.8 V. Just charging
that battery from flat, and assuming 80% charge efficiency will suck around
1 Ah of charge from a glider 12V battery. On top of whatever it takes to run
the device at high screen brightness. Which reminds me I want to remeasure
power use and charging of a few modern devices..... its pretty amazing the
compact compute and power capacity we carry around nowadays.

Yep... My panel pulls around 1.7 amps sitting on the ground so assuming a couple of brand new K2 10Ah batteries I'd get a bit over 11 hours runtime. I was getting a lot less. After discovering one of my new to me, but several years old batteries was pretty much dead, I replaced with a pair of Craggy Aero LiFePO4 batteries. Still struggled to get more than 5 hours until I replaced my master switch with a high quality one.

I might be able to modify one battery compartment in my ASW-27 to take the 15Ah battery, but there's definitely no room on the other side. Would it be bad to run a big and small LiFePO4 in parallel? Let the BMS handle the taking the small battery offline after it's depleted? I also need to look into installing a tail battery since the wiring is all there so just need to find something that will fit.

Getting back on the thread, this is why I now power my iPhone with an external battery. It's easy and cheap insurance to keep my avionics going for the long flights I like to do.

5Z

Tom

Got to keep reminding myself you now fly a ASW27 not the (massive battery carrying) ASH26. Sorry I don't know for for sure with running those batteries in parallel, I'd check with Richard. I've always liked to run 2 x large batteries, 2 x 10Ah in the DG-303 or 2 x 17Ah in the ASH26E. I like having a roughly known clean reserve to switch to. With 10Ah/15Ah batteries I'd just run them by themselves, but thats personal preference not based on other reasons.

Darryl



On Wednesday, September 27, 2017 at 4:35:43 PM UTC-7, wrote:
On Wednesday, September 27, 2017 at 3:43:56 PM UTC-7, Darryl Ramm wrote:
And it's a reminder that modern small devices can draw significant power. As
an example an iPhone 7 Plus has a 2.68 Ah battery at 3.8 V. Just charging
that battery from flat, and assuming 80% charge efficiency will suck around
1 Ah of charge from a glider 12V battery. On top of whatever it takes to run
the device at high screen brightness. Which reminds me I want to remeasure
power use and charging of a few modern devices..... its pretty amazing the
compact compute and power capacity we carry around nowadays.

Yep... My panel pulls around 1.7 amps sitting on the ground so assuming a couple of brand new K2 10Ah batteries I'd get a bit over 11 hours runtime.. I was getting a lot less. After discovering one of my new to me, but several years old batteries was pretty much dead, I replaced with a pair of Craggy Aero LiFePO4 batteries. Still struggled to get more than 5 hours until I replaced my master switch with a high quality one.

I might be able to modify one battery compartment in my ASW-27 to take the 15Ah battery, but there's definitely no room on the other side. Would it be bad to run a big and small LiFePO4 in parallel? Let the BMS handle the taking the small battery offline after it's depleted? I also need to look into installing a tail battery since the wiring is all there so just need to find something that will fit.

Getting back on the thread, this is why I now power my iPhone with an external battery. It's easy and cheap insurance to keep my avionics going for the long flights I like to do.

5Z