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Worked DXCCs:

Equipment

HF/6 m Transceiver:
- Yaesu FTDX5000MP

Receiver:
- Malahit DSP4

Headset / Microphone:
- Heil Pro Set Elite 6 (HC-6 element)

Antennas - rooftop of a 17-storey building:
- Custom OCFD 160-10m - feedpoint at 16.7% (1/6) of the wire
    ◦ Total length: 82.3 m of P-268 (П-268) military field wire (long leg ≈ 68.6 m, short leg ≈ 13.7 m)
    ◦ Feedpoint height: ~61 m AGL (10 m above the roof, on a roof-mounted mast)
    ◦ Geometry & orientation: asymmetric inverted-V, axis roughly NW-SE
        ▪ Long leg: azimuth 305°, end mast 6 m above the roof (~4 m below the feedpoint, slope ~3°)
        ▪ Short leg: azimuth 130° (~5° off a straight line, set by the roof layout), end mast 3 m above the roof (~7 m below the feedpoint, slope ~31°)
    ◦ Matching & choking system:
        ▪ Feedpoint: 4:1 Guanella balun (2× Amidon FT-240-43) + 1:1 common-mode choke (2× Amidon FT-240-31)
        ▪ Shack end: second 1:1 common-mode choke (2× Amidon FT-240-31) directly at the transceiver to decouple the 50 m cable-duct run and block building QRM (including elevator noise)
    ◦ Feedline: 50 m of RG-213 coaxial cable

- Custom 10 m monoband 5-element Yagi (OWA design)
    ◦ Boom & elements: 5 elements on a 9 m boom (~0.85λ), OWA (Optimized Wideband Array) design for high F/B ratio (>22 dB) and clean pattern
    ◦ Height & clearance: ~61 m AGL on a 10 m roof-mounted mast (~5.8λ at 28.5 MHz)
    ◦ Choking system:
        ▪ Feedpoint: W2DU-style 1:1 common-mode choke consisting of 60 DN65H ferrite rings (20x12x6 mm, μi=650) slipped directly over the feedline
        ▪ Shack end: 1:1 common-mode choke (1× Amidon FT-240-43) directly at the transceiver
    ◦ Feedline: 50 m of low-loss Radiolab 8D-FB coaxial cable

Other equipment:
- Yaesu SCU-17