4m 70Mhz antenni katolle

4Metri / 70MHz / RHA68 antenniviritys

Laitoin tossa 70Mhz autoantennin katolle kokeeksi.
Kokeilin radiolla 1W lähetysteholla kantoi todella pitkälle jotai 10km joka on tuolla taajudella älyttömän hyvä.
SWR oli
68MHz = 1
70MHz = 1.4
71MHz = vähän alle 2
Antennin olisi kuulunut lyhentää hieman. pituus on vähän yli 1m jousen kanssa.
Haastavinta oli saada toi johto katon läpi ja piti tinailla jatkokaapeli siihen…
Täytyy viellä käydä pistääs 4 ruuvia tuohon peltiin jotta se ei lennä tuulen mukana.

Tällä hetkellä antenni on liitetty http://websdr.fi ohjelmistovastaanottimeeseen.

 

Canon 2900 working on linux

Getting a canon lbp 2900 working on linux in 2018

After a lot googling I found the printer should work fine on Linux, but it is a PAIN TO GET WORKING!

So what i have here is a ubuntu 18.04 LTS version
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION=”Ubuntu 18.04 LTS”

First, I got the drivers from canon: http://support-asia.canon-asia.com/contents/ASIA/EN/0100459601.html

tar -zxvf linux-capt-drv-v271-uken.tar.gz
cd linux-capt-drv-v271-uken/64-bit_Driver/Debian
sudo dpkg -i cndrvcups-common_3.21-1_amd64.deb
sudo dpkg -i cndrvcups-capt_2.71-1_amd64.deb

Be aware, use your own filenames the versions are newer ones so change new version numbers there what you downloaded.

install the driver:

sudo /usr/sbin/lpadmin -p LBP2900 -m CNCUPSLBP2900CAPTK.ppd -v ccp://localhost:59787

sudo /usr/sbin/ccpdadmin -p LBP2900 -o /dev/usb/lp0   #BE Sure replace the lp0 with your printerport do ls /dev/usb mine was lp1!!!

sudo /etc/init.d/ccpd start

now the driver is installed and daemon started it still not work, it will do an error ccp send_data error, exit
the reason for this error is because there is missing 32bit libs, and there is very little information about this problem, you will install libs:

sudo dpkg –add-architecture i386
sudo apt-get update
sudo apt-get install libatk1.0-0:i386 libcairo2:i386 libgtk2.0-0:i386 libpango1.0-0:i386 libstdc++6:i386 libxml2:i386 libpopt0:i386

After installation you need to restart all services:

riku@mythtv2:~$ sudo killall ccpd
riku@mythtv2:~$ sudo systemctl restart cups
riku@mythtv2:~$ sudo /etc/init.d/ccpd start

Now you go into your cups webpage and print test page. be aware you need edit cups.conf to allow your IP if using over a network.