AngeliaLite
OpenHPSDR compatible transceiver
Sequencer with CW memory keyer
Automatic CW keyer, 4-channel sequencer and simple computer interface for PTT switching and CW manipulation.
LO PLL ADF4350
Developer: US4ICI PLL contains 2200 — 4400 MHz VCO. VCO frequency divider (multiple of 1/2/4/8/16) allows to synthesize frequencies from 137.5 MHz to 4400 MHz. A good phase noise (approximately -100 dBc/Hz, 10 kHz at a frequency of 1152 MHz). This development designed to be used as SHF LO (beacon, transverter) at a fixed frequency. …
PA 23cm 1296 MHz MRFE6S9160 150 Watt
Developers: US4ICI & US2IDR Technical specifications Model: PA-23cm-150W-N-female Based on MRFE6S9160HS transistor RF Range: 1260 — 1300 MHz P input TX < 6 Watt Pout = 150 Watt (JT65, FM) Pout = 180 Watt (CW, SSB) Supply operation: 28 V DC at IDQ = 12 A (TX) Impedance: 50 ohms RF connectors: N-female Dimensions: 100 …
LNA QRO with built-in bypass relays for 6m 2m and 70cm bands
Low noise amplifiers for 6m, 2m and 70cm bands with built-in bypass relays, based on PGA-103+ (6m) and ATF-53189 (2m and 70cm), with power through the feeder support, installed in milled aluminum case with N-female input and output connectors.
Transverter MICROSTRIP 5,76 GHz – 435 MHz V.2
Transverter is built on a classical scheme with synthesizer usage. Specifications Model: TRCV-6cm-70cm RF: 5760 MHz LO: 5325 MHz (by default) IF: 435 MHz (by default) Reference oscillator frequency stability (0 … 70 °C): typ. 0.2 ppm max PLL SSB PN @ 10 kHz Offset: -109 dBc/Hz Output power: > 13 dBm IF input power: …
LNA VOX with built-in bypass relays for 2m and 70cm bands
Low noise amplifiers for 2m and 70cm bands with built-in bypass relays, based on PGA-103+, with power through the feeder support, installed in milled aluminum case with N-female input and output connectors.
LNA EME ATF531 for 2m and 70cm bands
Low noise amplifiers for 2m and 70cm bands, based on ATF-53189, with power through the feeder support, installed in milled aluminum case with N-female input and output connectors.
Sequencer PCB for LNA, PA, RF-Relays, Transceiver
This sequencer is designed for CO-OP work with VHF radio equipment including transceiver, PA and LNA. The main device’s assignment – ensure the inclusion order of devices listed above with correct order and delays. The circuit solution basis was taken from W6PQL. Some changes were applied to the scheme. This changes allow to use the …
Sequencer PCB for LNA, PA, RF-Relays, Transceiver Read More »
LNA EME SAV541 for 73cm and 70cm bands
Low noise amplifiers for 73cm and 70cm bands, based on SAV-541+, with power through the feeder support, installed in milled aluminum case with N-female input and output connectors.
LNA EME SKY67151 for 23cm and 21cm bands
Low noise amplifiers for 23cm and 21cm bands, based on SKY67151 (one cascade edition) and SKY67151 in the 1st cascade and PGA103+ in 2nd cascade (two cascades edition), with power through the feeder support, installed in milled aluminum case with N-female input and output connectors.
LNA with the bypass relay and RF VOX
This LNA is assembled based on chip MMIC SPF5122z. HF356 AXICOM relay is used for path tracing. The main distinction from previous designs consists in RF VOX availability (HF voltage detector in the output of LNA). Such decision allows protecting amplifier from random transmitter power feed to their output. RF VOX functions correctly in CW, …
Практика применения LNA в тропосферной связи.
После ПД 2011 удалось провести эксперименты с МШУ 144 МГц с двумя реле обхода на SPF5122z. МШУ был установлен на UT3IWA вблизи антенны (два ряда по 7 эл, вертикально), фидер 35 метров RG213, трансивер FT847 (Кш=2.4 кТ). LNA NF=0.8 dB Место приема характеризуется изобилием помех в виде широкополосного шума, достигающего с отдельных направлений уровня S7 …