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CW interface + Iambic keyer
CW interface + Iambic keyer CW iambic source code Design by Kostadin Mikic YU1KM/qrp 73! de LY3H
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MagLoop 10 – 24 Mhz
Magloop for 10 -24 Mhz. RX and TX Work very well. RX test with skimmer 2.6kHz bandpass TX test 100W 73! de LY3H
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LituanicaSat-1
LituanicaSAT-1 is an educational project. It’s primary mission objective is to provide university students and young engineers knowledge & real hands-on experience in satellite engineering thereby helping to develop infrastructure and know-how in space technology by interdisciplinary interaction between academia and industry in Lithuania. LituanicaSAT-1 will carry Lithuanian open-source software and hardware for…
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Crossband EchoLink
Echolink station for crossband repeater. Loc: Elektrėnai RX: 145.575 MHZ PL67 Hz TX: 433,550 MHz Power: 15W Antenna: 2 band 2 direction yagi RX 6 dBd TX 8 dBd WWL: KO24IS TNX: LY2EN Simonas for PC LY2SS Žilvinas for software tuning LY3BRA Audrius for testing 73! de LY3H
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1.2 Ghz V antenna for RC video and other systems
Cable 50 Ohm. Elements d =~2 mm Cu. Angle 90 between elements. 1 element lenght 61 mm 73! de LY3H
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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…
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Slim Jim antenna for 433 MHz
