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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
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70cm RX
73! de LY3H
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CW IAMBIC
Source and hex file hare CW IAMBIC
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2m TX
QSO sample
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20m QRP CW 5W TRX
I made already quite a few QSOs with the this transceiver, even with some JA stations. Antenna MagLoop for 20m design by Kostadin Mikic YU1KM/qrp 73! de LY3H