Having built two monoband SDR kits, it was time for something new. The Softrock Lite II receiver kits are working fine, but I wanted something that covers more. The two monoband kits are made for 30m and 40m.With my soundcard that samples at 96 kHz I can see/hear the whole 30m band, on 40m however I can only receive the lower part of the band.
My top 5 of my best dx using wspr. On 20m the antenna is a half wave vertical. On 80/40 and 30m I used the Diamond W735 with an extra dipole for 30m. This antenna hangs just 2 meter above the lawn.
I came acros the site of IK0VVE with a wonderfull description of a MEPT.
MEPT stands for Manned Experimental Propagation Transmitter and is usually very low power. He uses a crystal oscilator but I find them pretty expensive. So I Looked around the net for programmable oscillators. Those are even more expensive and in the most cases you need a microcontroller to programm them. The oscillators uses I²C for setting the frequency by setting the divider and table lookups, …..
I noticed today that the Software Defined Radio from Twente University now has six bands to play with : 0-150 kHz, 1790-1930 kHz, 3500-3760 kHz, 6990-7135 kHz, 10030-10175 khz, 14000-14290 kHz.
But it lasts only a few days, so enjoy : http://websdr.ewi.utwente.nl:8901/
It has been a while that I posted something on my blog here. Don’t panic, I’ll try to do it more frequent.
I’ve been busy with all kind non-ham related things.
But yesterday I managed to find a free moment and put the transceiver on the 20m psk band. Around 20:40 UTC I noticed a qso that needed more attention.