Rauschfunk

V-U-SHF / SDR / DV and more by Mario, DH5YM

DARC 10m Contest 2016

Posted on January 10, 2016 by mario

2x top fed Delta-Loop horizontal

Single Op CW LP from JO61XA.

40 QSO and a lot of technical issues this time.

HiQSDR and R-155 PA

Power Generator and AC filter

Feed points of the two loops

Tiny Sequence control unit (WIP)

Posted on October 15, 2014 by mario

Thats a simple sequence control unit for transverters etc. ON a double layer PCB. The design was eine with the open source tool KiCAD. Its made around a attiny2313 and features a highside switch, a lowside switch as well as a uln2003 driver. In addition further sensors can be connected via I2C or SPI. The software is not finished. More information will follow.

70cm October 14 Reg1

Posted on October 5, 2014 by mario

28 QSO with 20W and Hex-Quadlong antenna i built just before. I just wanted to try the antenna. Just few time for operation.

Hex-Quadlong 70cm

ODX was HA5KDQ via random. Impressive good ears there ;)

70cm QSO distribution

Decent results Saturday evening. Better results Sunday because more stations did CW.
The reason for using this antenna is the possibility to mount it at the top of a fibre mast installed at the balcony.