Power/SWR meter
WSPR transmitter updated with a power/SWR meter. For more info about digital SWR meter kit see page Radio-Kits
Author Archives: Jerzy
Modification WCDMA 2170MHz to 13cm
For original description of the modification go to IZ4BEH . The page is in Italian but using Google Translator is easy to understand main ideas and way to go. I found it very easy to do. One should be, of course, very carefully not to damage components around the modified places. With 28V supply it is
WSPR Power Amp
Finally finished a power amplifier for Ultimate3S. The idea I had found on net, see page VK3PE . I contacted Glen and he gave me needed GERBER files to order PCB. Used Seeedstudio.com and got 5 pcs very quickly. Had some problems to complete components, see my story about fake RD166HHF1 devices. Finally ampilfier is ready and working. I
Beware fake semiconductors
I bought a pack of 5 x RD16HHF1 HF power mosfets via eBay from good-module based in China and ended up with a problem, devices were supplied but they weren’t RD16HHF1’s ! 🙁 I fitted one device on the amp PCB and applied power. The power supply went into overcurrent shutdown straight away! Measurements indicated that
EW8W in log
Today got a new square, KO42to, on 2m .This is my number 451, worked on 2m. Did a QSO with EW8W, Alex in FSK441 mode via MS.
ICOM IC-7100 ALC modification
After updating soft to Release E5 for sometimes ago I decided to do hardware modification as well. For instruction and explanation I recommend go to TRX Bench on YouTube – https://www.youtube.com/watch?v=YaGy4pUxkHc . The rig after modification is working excellent and issue with low power is solved.
10GHz sked with OZ/LA8GT
Today had a sked with OZ/LA8GT. Tore was in JO47md (Bulbjerg 47 m asl). Unfortunately weather in OZ was bad, wind 40 km/t and Tore had problems to keep all on the place. No QSO with him. Later I manage a contact with OZ9PP Peter in JO47va (Aalborg) on CW with 559 both side. New
2016 Perseidy
QSO´s worked by me during peak of the shower. 10/08/2016 21:11 9A/OK2ZAW JN83FO 1720 km 12/08/2016 13:53 EW7T KO53EV 1454 km 12/08/2016 16:44 TF3CY/P IP24JG