Re: Bluetooth...

Steve WB3LGC

someone else (?) mentioned wifi/bluetooth on the same freq may be an issue... I'll check as both may have been on.

Power is not a problem. I am using a power/fan hat that is fed with 12V. I am overclocking (2G) and that is working very well. I can run wsjt-x and (at most) using htop - "read" 80-90% CPU, never seeing 100%.

The temp (at most) only went up 1-2 degrees C with the overclock.
Also using 120G SSD as boot device.

I will spec what I am using, if anyone wants part info.

The bluetooth isn't a "big deal" as most of the time I will use it headless. It is nice to be at the radio/computer while trying to make things work.

I need to figure out why my wired LAN is "dead" after moving things in the room a few weeks ago. I see no breaks. I have a tester...

almost ready for FD... The GPS was... working.

73, steve WB3LGC

On 6/25/20 11:45 AM, Brian Webster via wrote:
Are you running your Pi over Wi-Fi to the network or via Ethernet. Since both Bluetooth and Wi-Fi are in the 2.4 GHz spectrum and the radios are both on the main board, it might be possible that you are having self-interference issues. Turn off the wi-fi and see if you still have issues. I would also be keeping an eye on the power situation. The more things you run such as the Bluetooth radio and such the more current you are drawing. If the power supply you are suing is marginal for the current needed this could be part of any issue.
Brian N2KGC
-----Original Message-----
From: [] On Behalf Of stephen shearer
Sent: Wednesday, June 24, 2020 8:10 PM
Subject: Re: [RaspberryPi-4-HamRadio] Bluetooth...
I am not using a wireless dongle but the Bluetooth built into the RPi.
using a wired mouse/keyboard is what takes up the USB ports.
My main reason for wanting to use a Bluetooth mouse/keyboard is less
wires on the desktop.
73, steve WB3LGC
On 6/24/20 6:35 PM, Chuck M via wrote:
Had similar problems when running Logitech wireless mouse and kb using
fldigi and other apps. Wireless is power hungry and may be the
problem. If you get a powered USB hub for the wireless dongle, that can
make it work as well. Usually can find USB 2.x powered hubs for a low
price on ebay or Amazon. Don't need USB 3 for wireless.

Didn't have the problem when running LIbreOffice or other apps. Think
it becomes an issue when processor is busy decoding the radio signals.
Possibly someone more knowledgeable on RPi can expand this further.


On Wednesday, June 24, 2020, 6:22:18 PM EDT, Marty Hartwell
<mhartwe@...> wrote:

Hi Stephen

I use a Logic brand keyboard and mouse set I got at Office Depot for
about 15.00 Dollars

of so, which uses only one USB Bluetooth interface, so it opens one USB
slot. I don't see

any lag time as in pauses using the mouse and not pausing during typing
but my typing

has gotten slower for a while. Guess I need to get back to typing for
more practice.

Marty kd8bj

On 6/24/20 5:14 PM, stephen shearer wrote:

I have been using my RPi both headless and with a monitor.

When sitting at the monitor, I have tried Bluetooth for the mouse and
I find that both mouse and keyboard get Hung for short periods of time.
I see it when I run wsjt-x.
I have not checked if it happens with a blank screen.
If I use a wired mouse/keyboard I don't see them hang.

Am I doing something wrong?
Are others seeing the same thing?

Not a big deal but it would be nice to reduce USB ports required...

73, steve WB3LGC

I will be using my RPi for FT8/FT4 80M/40M during FD - 1E DE

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