Biography

Hi, I'm Angel. I was born on 25 April 1943. My first construction off radioreceiver was in 1956. My first QSO was in 1958 on radio station LZ1KDW. My first radiotransmitter - 50 watts (HF) with call LZ1RA I put in operation 1966. My first SSB transceiver with semiconductors I design in 1970. From 1970 I have first class license. In 1973 I launched a transmitter 1000 watts. I graduated from higher education at the Technical University - Sofia specialty "Radio and television equipment" as an engineer in radio electronics. My main work was in "Heavy Institute of Electronics" - Sofia. I went through the posts Designer, Head, Head and reached to the Director of the Institute.I was chief Designer of the Radio Broadcasting Transmitters from 1 KW, 5 KW, 10 KW installed in the country and 100 KW transmitters that were installed abroad until 1989. Then I worked in BAS - National Institute of Meteorology and Hydrology (NIMH-BAS), the Chief Radiocommunications. Since 1995 I was lecturer and since 2000 I am full professor at the New Bulgarian University (NBU) - Sofia. I teach courses in Electronics, Radio communications and Broadcasting and distribution of electromagnetic waves. Amateur Radio is my main hobby. I also love football, music and traveling around the world. My wife Iglika completed higher education in librarianship. It has call LZ5RA. My daughter Teresa is a Ph.D., assistant professor of Radiocommunication at the New Bulgarian University (NBU). It has call LZ3RA. Pictured above is the house that we built ourselves with my wife. We were engineers, contractors (workers) and investors. Only 4 (four hands and without any equipment) !!!
The photos below are LZ1RA - Angel (father), LZ3RA - Teresa (daughter) and LZ5RA- Iglika (mother).

Worked DXCCs:

Equipment

HF bands: Yaesu FT-747GX, FC757AT + PA: 200w(2x2T956A); 300W (2xBLW97): 500W(GU81M); 1000W(GU43B), (all PA is home made),
HF+50+VHF+UHF: FT-847, (before 2019 - TS590SG),
antennas: inv.80m, inv.40m, 7 x delta loop 40m (5 el.west, 3 el. east),( D4-D3-D2-D1-A-D1-D2),
inv.30m+10m fider with balun(1.8;3.5;5;7;10;14;18;21;25;28 and 50 MHz); 8m gp with tuner; ring20m; ring15m; ring10m; delta40m (north/south).

VHF(144 MHz: TRX: TR-9130; RX AR950; TRX: Maxon PM150 (home recast 100 channels-80 simplex, 10 repeaters, 10 revers),+ PA 100 W - home made (MRF317), FT847 + PA 500 W - home made (GU74B) -on 144 MHz; ant:7 el Yagi; gp.1/4: rotary Yagi antennas:(4 el.horizontal-for 50MHz + 6 el.vertical - for 144 Mhz).

UHF(432 MHZ: PA 100W LDMOS MRF186 - home made, design from IK1HGE); ant:13 el Yagi.


FT-847(from 28-32 MHz) to 144-148 MHz - 12/15W + 432-436 MHz - 3/5W from UR3LMZ@gmail.com and UX4LA79@gmail.com,
VHF/UHF amp. TC-VU 50 W.

SHF band: 23cm TR-9130/TV - 2,5W + PA 25W (from SG-LAB.COM); ant:4 x 15 el. Yagi, hb9cv.
13cm FT-847/TV + PA 5W; ant:4 x 4 Yagi, 4 x 4 Helical, 1 x Helical.
QRPP - Bands: 432, 1296, 2400,3800 MHz with ADALM-pluto.