Hi, welcome to my blog !

My name is Jerzy and thanks for dropping in. I am very glad you are surfing around here so I would like to take this opportunity and present myself.I have been a radio amateur since 1969. My first SWL signature was SP8-1871 and a short time after I got SP8DXL. After 1976 I used SP2DXL and since 1988 I am LA4YGA. From 2024 I am also as SP2DXL when visited Poland.My QTH is Kristiansand, in the south part of Norway, WW locator is JO48be. My favorite subjects in HAM radio are VHF/UHF propagation and construction of RF equipment.

Standings

Worked DXCC entities and squares

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Modification WCDMA 2170MHz to 13cm

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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

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WSPR Power Amp

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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

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Beware fake semiconductors

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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

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EW8W in log

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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

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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

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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

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2016 Perseidy

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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  

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