Les dernières nouvelles ...
Accueil / Divers / VP8STI: 100W in a wire

VP8STI: 100W in a wire

When you are calling a DX as a little whisperer (using 100W in a wire) you need to find the right hole where you must call. Calling together with long yagi antennas at 60 feet owners running a full legal power engine will be a bit frustrating.

Luckily I have an Elecraft P3 which shows me the band traffic so I can identify free spots even in a crowded band.

Here is the spot (in red) where I called (and was heard by VP8STI).

vp8sti-2

By the way, it is interesting to see the growing number of stations, not listening the DX and endless calling – I still do not understand how they can catch the DX answering to their call if he does it.

VP8STI (green bar) was sending 599 in the picture below.

vp8sti-6

Ok, now you understood how a panoramic receiver can be useful, let’s try to make one with a RTL-SDR dongle and a Raspberry Pi.

You will find instructions from Adafruit

I didn’t chose the TFT screen but connected the Rapsberry Pi to a monitor using the HDMI port.

The first step is to build the dongle drivers from here

You will need to blacklist the dvd_usb_rtl28xxu kernel module in  /etc/modprobe.d/raspi-blacklist.conf to prevent Linux to use its own driver.

Then install gqrx.

It’s done: you have a nice spectrum scope which cost you $50.

Screenshot from 2016-01-20 20:04:27

Enjoy!

La suite à lire sur le site de : F5IYJ
VP8STI: 100W in a wire

%d blogueurs aiment cette page :