Solar collector pump controller

Solar collector pump controller based on MCU ARM STM32Fo Video sample     Example how get temperature from DS18s20 via UART int main(void){ int i;    UART_Config(); while(1){ OW_Reset(USART1); OW_SendByte(0xCC);              // kreipiames i visus…

GUANELLA 4:1 current BALUN for QRO

GUANELLA 4:1 current BALUN for QRO  73! de LY3H

CW 500Hz filter for Yaesu FT-847

YF-122C filter manual connection for Yaesu FT-847 Work very weel! 500Hz filter sample 73! de LY3H  

CW interface + Iambic keyer

CW interface + Iambic keyer CW iambic source code   Design by Kostadin Mikic YU1KM/qrp 73! de LY3H  

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

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…

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…

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

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…

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  …

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…

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  …