Triple Bazooka Antenna for ADS-B 1090 MHz

After installing the new Raspberry pi 2 with piaware and flight radar feed, I was thinking for new antenna. The dipole is nice, ground plane antenna also good , but I didn't see special receiving reports. Dipoles are usually used for horizontally so it beams the signal in 2 horizontal directions, but in our case we need omnidirectional antenna. Starting from design of double bazooka, I realize the braid copper shield of the coax is the RF radiator and the center conductor act like balun or matching transformer to provide DC ground. Bazooka antenna is good for receiving bandwidth, and reduced noise over the old wire dipole. The Lindenblad antenna for satellite show us to good way to this antenna in T slopper, inverted V or vertical like in picture. I encourage you to make test with adbscope to see the coverage. You can play with dimension of radiators 13cm ~ 15cm. Do not use any coax that has a foil shield wrapping. Good luck and good reports.

so2sdr - powerfull tool

 The sdr  (software design radio) is brought by wondefull plaform softrock, soft66 or genesis. If you  allready check the www.websdr.org, made by PA3FWM  you see the powerfull  tool, now I sugest to test the software so2sdr.  

 

so2sdr   is contest log program that features a software-defined radio (SDR) bandscope. The program is written using Qt and is dual-platform, running in Linux and Windows. 

           Two-radio (SO2R) support. Headphone and radio switching via parallel por

           Uses hamlib for radio communications

           Currently supports soundcard based SDR interfaces (Softrock, etc).  

           Requires 96 KHz stereo soundcard

           CW generation via Winkey 

 Project home    http://code.google.com/p/so2sdr/

 Download        http://code.google.com/p/so2sdr/downloads/list

MBU Cluster

MBU Cluster is simple android application for ham radio operators to view live the spots on mobile device. All the spots are refreshing every 60 seconds.

LFA Antenna 2 Elements YO2MBU

The 40m band has also the magic durring this time of the year, inspired by the G0KSC, I took the decision to design  and test the LFA antenna for the 40m. This antenna was installed in my attic at 15m high, and was made from copper flexywire 3mm. The fact the LFA loop are feeded with 1:1 balun realised by YO2MLL. 

 

 The antenna has one loop and one reflector.


 

 The SWR  is low with nice value of gain.

This antenna has 10 dBi Gain and just 14 dB F/B.

www.dxzone.com amateur radio search engine

Ham Nation

As backpacker armed with FT 817 I discovered the friends all over the world,

crossing seas, forests and mountains.Which is also an enjoyable place to relax.

Ham radio does not know the word enemy, friends are all over that embrace the ham nation.

I will start to share my humble QRP experience, building some antennas most of them for field day.