– April 9 – installation and wiring of the Crossed Yagi 2×7 el (WiMo) antenna. – April 5 – receiving RTTY signals (70 cm) and SSTV (2 m) from a balloon released by the SP3KEH team in Poznań – using our antenna system and FUNCube Pro + every now and then I can easily pick up, record and upload the received packets from PW-Sat2. It works! We ordered a crossed yagi antenna for 2m. Thanks to this, it is possible to work on one FT991 in split on two bands with one coaxial cable. – March 28 – after mounting the antennas on the metal boom, the DBA270 preamplifier and the MX72N duplexer were installed on the mast. It sends a package somewhere like every minute This satellite is temporarily in low activity, charging the batteries. – March 27 – receiving and the first successful decoding of frames from the PW-Sat2 satellite. Definitely no quality for the 2 m band, 6 vertical elements are not enough – crossed yagi is a must! However, the preamplifier would not hurt. Antennas have worked, but I thought that it would be better to hear. It is one of the few satellites which has a downlink of 70 cm. The biggest achievement is 4 stations on FM with one SO-50 pass. The SatPC32 program deals with rotor control and Doppler correction for both transceivers. – March 18 – test QSOs in a configuration with two FT991 radios.
Such configuration results in a loss of 3 dB in relation to a single antenna, but thanks to this, polarization fades that can reach in theory up to 20 dB are eliminated Antennas are offset by 1/4 lambda from each other. – assembling 2 antennas (made by SP5CIB) on the boom. – Ma– making of a 75-ohm cable with symmetrators and a line fitting two Yagis for 70 cm band – March 13 at 11:03 local time – Mirek makes first FM contacts via FOX-1D (AO-92) with PD4HDB and SQ2XE (big emotions, as always when the first time) – listening stations working via satellites (SSB, CW, FM) – launching the set antena/rotor/controller/ T-991/SatPC32 – installation of the SatPC32 program it is much newer and better than Orbitron, it allows automatic compensation of the Doppler effect
– launching the rotor/controller/Orbitron set “on the table” The controller uses the AlfaSpid protocol and is compatible with satellite tracking programs, such as Orbitron or SatPC32 – own construction controller for the azimuth/elevation RAS rotor (based on the new GNI-r5 controller). Mirek SP5GNI prepares and tests hardware and software at home. As you can see, you can do without a directional antenna! MaPiotr SQ5JUP made the first contact from home QTH via FOX-1D satellite (AO-92) on FM using the X300 antenna + duplexer MX-72A + IC-9100. After a series of meetings on VHF subjects in our HF5L club, we started to prepare for work through amateur satellites.
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