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LituanicaSat-1 repeater rev.2
LituanicaSat-1 FM repeater board. Now working ant testing with PA 15W and duplexer for dualband dual direction YAGI TX 433,550 15W RX 145,575 CTCSS PL 67 Hz Loction Elektrėnai, Lithuania Call LY3H WWLoc KO24IS Antenna X300 TX 10.5 dBi, RX 7.5 dBi. H from ground 55m Sound indentification LY3H RTX Duplexer PA simple tuning to 433 Mhz 73! de LY3H I explicitly…
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UHF 9v + 9h handheld cross YAGI for satellite
UHF 9v + 9h handheld cross YAGI for satellite 436,5 MHz center. Required 113 mm length of 100 Ohm coaxial cable transform to 50 Ohm. Antenna is working very well. Sample: CUTE1,7 cross yagi on RTL-SDR USB dongle http://ly3h.epalete.com/wp-content/uploads/2013/01/CUTE17-cross-yagi-SDR.mp3 73! de LY3H
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VHF UHF cross band repeater
UHF VHF cross band repeater based on “LituanicaSat-1” satellite prototype FM section. Simple modifide PA from 150mW to 1,5W and added diplexer for antenna. Input: 145.575 MHz CTCSS needed 67 Hz tone Output: 433.550 MHz 1.5W Antenna: Open sleeve dipole Height from the ground: 40 m All on post case 🙂 Diplexer “LituanicaSat-1” CubeSat FM cross band repeater prototype…
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VHF UHF YAGI handheld antenna for satellite
VHF UHF dual band YAGI antenna for satellite and my first QSO via SO50 satellite with ES5CC station 🙂 TRX 5W : WOUXUN KG-UVD1 QSO sample: SO50 first QSO components mounting 50Ohm cable direct conected to dipole without any baluns Elements diameter 3.2mm aluminium with magnium, springy and light 73! de LY3H
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SnaLY-160 (Scalar USB network analyzer)
Technical specification: OS: WinXp, Vista, Windows7 (64 ir 32 bit) Sweep range: 100 KHz – 160 MHz. Generator range: 10 KHz – 160 MHz. Output ~1,7 V pp on 50 Ohm load Achievable measurement range -75… +17dBm (limited by AD8307 and construction) Powered directly from USB (~70mA) Software calibration function for linearization. This tool…
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Magloop antenna for 20m
I was forced to use magloop (also known as STL – small transmitting loop) because I don’t have permission to build antennas on my roof. For loop I use cheap heating pipes. Any magloop builder inevitably will have to solve high quality/voltage capacitor problem. Since I operate only CW I decided to try fixed…
