Welcome to my amateur radio station DU1AU. My station is located in Bacoor, Cavite, Philippines, 18 km south of the nation’s capital, Manila. It was established in 2017 when I first obtained an amateur radio license from our local telecommunications bureau, the National Telecommunications Commision (NTC). My previous call signs were 4G1AWN (Class C, 2017), 4I1AWN (Class B, 2018), and currently DU1AU (Class A, 2019-present). I am active in VHF/UHF (FM mode), and HF (SSB/CW mode). My interests include satellite communications, Morse code, and building home-brewed equipment such as antennas and automated motorized satellite tracking systems.
- HF Antenna: 40-meter band wire dipole
- Satellite Antenna: 4-element cross-Yagi VHF and 8-element cross-Yagi UHF antenna on an automated azimuth-elevation tracker
- VHF/UHF Antenna: Dual-band mobile antenna 1/4 wave VHF and 6/8 wave UHF Diamond SG7000
- Radio Transceiver: Kenwood TMV71A (full duplex VHF/UHF), Yaesu FT-2900R (VHF), Icom 718 (CW and SSB in HF), Yaesu FT60 (VHF/UHF), and Wouxun KG-UV9DE (VHF/UHF)
- Accessories: Home-brewed straight key, home-brewed electronic iambic keyer with Uni-Ham paddles, home-brewed desktop microphone using a Sony PX470 voice recorder, home-brewed TNC for APRS operation, Tokyo Hy-Power VHF/UHF amplifier with RX preamp, Air-Spy mini SDR with Air-Spy HF upverter and NooElec LNA, various regulated power supplies, a laptop, a headset, customised QSL maps, SWR/power meter, multi-meter, and a soldering station.
- Calling frequencies: 7.095 MHz (LSB), 7.102 MHz (CW), and 145 MHz (FM)
- Grid: PK04lk
Prior to becoming an amateur radio enthusiast, I was involved with a different but related hobby: amateur astronomy. I have a telescope that I use to take images of the moon, the sun, the planets, comets, galaxies, nebula, and other celestial objects. I also build computer-controlled tracking systems to allow a telescope to follow the apparent movement of sky objects. I also join expeditions in remote places to observe deep-sky objects or take photos of events like eclipses.
I have always been interested in receiving radio signals, but the cost of radio equipment prevented me from exploring amateur radio as a hobby until very recently when I realized that the cost of entry-level equipment has gone down to a point that I am now able to afford it. In 2017, I’ve decided to get licensed and setup my own station. With astronomy as a background, I was drawn to satellite communications as well as short wave reception. I also find Morse code fascinating, especially when you get to realize that communication is established between two stations using nothing but tones! In the future I will also explore radio astronomy, if perhaps I could build the proper antennas.
If we have made contact, I would like to receive a paper QSL card, and will send you one as well. For my mailing address, please head to my QRZ page.
Night Sky in Focus
Astronomy and Amateur Radio
© Anthony Urbano (Manila, Philippines)