ASUS USB-AC56, wiring, antennas, etc

I’m not the expert on this, and I’ve read a couple of conflicting points to solder to, but I’ve got my B+ soldered to PP27 and B- soldered to a USB grounding solder point between PP27 and PP51 and I’ve had no problems with power. Here’s list of Testing points on a Raspberry Pi 3B and 3B+:

PP1 VCC +5V (from micro USB receptacle)
PP2 VCC +5V (from micro USB receptacle)
PP3 GND
PP4 GND
PP5 GND
PP6 GND
PP7 5V after polyfuse
PP8 3V3
PP9 1V8
PP10 Power LED
PP11
PP12
PP13 Status ACT LED
PP20 H5V (5V at HDMI connector)
PP21 RUN (reset signal)
PP22 Ethernet Activity LED
PP23 Ethernet Link
PP24 Composite Video
PP25 L Audio
PP26 R Audio
PP27 USB VCC
PP28
PP35 VCC +5V
PP36 USB D-
PP39 PP40
PP41 USB D+
PP42 USB D-
PP43 USB D+
PP44 USB D-
PP45 USB D+
PP46 USB D-
PP47 USB D+
PP48 GND
PP49 GND
PP50 GND
PP51 GND
PP52 Ethernet TX+ ?
PP53 Ethernet 3v3 ?
PP54 Ethernet RX+ ?
PP55 Ethernet TX- ?
PP56 Ethernet RX- ?
PP57 Ethernet 3v3 ?
PP58
PP59
PP60

This is how I have Pi3B+ connected.

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Thanks for the information, I’m at odds though on why the blue light on the AC56 doesn’t light up when it’s powered on though. And I found out after reading a WiKi on the difference between a USB2 and USB3, had a pin layout showing that next to 5v+ is D- then D+ and then Gnd so I may have had that backwards also. Using a multimeter I confirmed that I’m getting pwr and gnd at the AC56, just not seeing the blue light on has me uncertain. I only have one spare AC56 left and at the cost of them I don’t want to waste it. Thanks again.

Hi, is this the antenna used in your long range flights especially the 20k ?

If yes, pls share the link to buy.

Antenna for air side must be manufactured, there is nobody selling them.
For ground, you can buy Maple flat pannel 17db from Aliexpress

See here some links:

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Thanks a lot for sharing your hardware setup.
I would request to share in detail your strip antenna on air side.

when you say cut befor the dc cap, exactly where do you mean??

manu thanks again for this info

the blue light only turns on when it is transmitting. so just turning the dongle up is not enough, you have to have the pi/open hd transmitting

After this line (in attached pix), somewhere, or do as i did.

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I’ll have to pull this all back out of a box and give it another try. Thing is that if I don’t wire it up directly and just use one that still has the USB connector on it, the little blue lite lights up when it’s plugged into my RasPi unlike the one that was soldered directly to the Pi, which doesn’t light up. Tried doing it with two AC56’s. Thanks, I’ll give it another try and see.

Sorry if this is a stupid question but i am getting so bad reception that i am getting confused…

On this images, you have connected two antennas correct?

I honestly dont see how you connect the cables? Is the middle coax going to the pin, where you had the middle pin on the SMA, but i cant see that you connected the ground anywhere?

The same for the coax to the left in the image, where you scratch the pad/silkscreen one gets to a good ground point, but where is the signal cable/middle cable connected for the left coax?

I case you didn’t figure it yet, check this photo:
https:/uploads/default/original/1X/1485002ac507df610331fe004e1ba27299e68ff6.jpeg
shield goes to the ground and middle wire goes to antenna trace. You should always find the ground around antenna trace.
Its different card, but connection should be similar.

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I know i’m digging this up again, I would like to be clear where the coax solder points should be on the AC-56 I understand cutting the trace in the places shown but in the pictures shown the glue is obscuring the solder points. I know ABLomas you have explained but I’m more af a visual learner.

I have managed to get the board stripped down, so any help would be appreciared.

I’m new here, and I’m also lightening the wifi ASUS AC56, so far the first step of removing the USB connector and connecting the cabling is successful.

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Nice! I don’t know if this is necessary :man_shrugging:, but I cut out pieces of aluminum foil in the same shape as the one under the cover, and then Kapton taped it. I think it’s some kind of sheilding

Yes, new progress with ASUS AC56 modifications. Two MMCX antenna connectors are now connected. The test after connecting to zero 2W with OPENHD flash is a success.

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Here is my new boxing Asus AC56.

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Yo this is a sick mod! Just out of curiosity, how toasty did your AC56 become? I personally didn’t need a heat sink of considering many hours of use in the hot summer perhaps it’s a good idea