An amplifier is an electrical device, which will increase the voltage, current and power of the applied signal. Amateur radio uses both transistor and electronic amplifiers (the tubes are more palatable at higher powers and have better voltage and current ratios).
When preparing for radio amateur exams, it is difficult for interested parties to obtain comprehensible documents, from which they would understand the issues of electrical engineering and radio engineering.
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Cheap VHF Amplifier How to Increase Device Power at 144 MHz? One option is an LDMOS amplifier with MRF9180. Tieto
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Javier EA3GCY is a technical manager “QRP Ham Radio Kits”, companies, which since 1990 produces various DIY kits for radio amateurs. They are
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You are one of the radio amateurs, who make the final stage themselves? It is possible to make a tube amplifier of higher power if you have the necessary knowledge
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Each, who started to deal with SO2R or multi operation with the possibility of working on multiple bands simultaneously encountered the issue of protection
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RF-Kit DH3NAB, a lesser-known company in our market, has innovated their short-wave amplifier kit with two LDMOSFETs., B26-PA RF2K-S. Not
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Jim Smith G7NTG is the author of the list, how to retune commercial end stage with nokia 2 x BLF7G22L-130N at 2.4GHz for use on 2,4
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V-MOS-y IRF5xx and IRF6xx are suitable transistors for a simple broadband linear PA with a power of tens of watts. From a fifty - crown transistor at
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When turning on large output stages (amplifiers) a short-term current peak occurs, in which the magnetizing current of the transformer and the charging of the filter are involved
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Ole allowed us an interesting final stage – OZ2OE - translate and publish on CQ.sk. The original in English can be found at http://hjem.get2net.dk/ole_nykjaer/oz2oe/mrf317/317.html.
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Power circuit Toshiba S-AV17 / 50W which is used in some mobile stations for 2m (e.g. DRAGON SY130) after the time of use
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