3Y0J Bouvet
It is difficult to plan the logistics of such a huge project, such as DX expedition 3Y0J to Bouvet Island. After the sale of the originally intended vessel
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amplifier
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).
CQV-SWR120 power meter and PSV meter with alarm
The CQV-SWR120 is a digital power and standing wave ratio meter (PSV) in the range of 1.8MHz-54MHz. Full color 240 x 240 pixel LCD display
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Elaborated answers for radio amateur exams
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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Amplifier on 144 MHz s MRF9180 / MRF186
Cheap VHF Amplifier How to Increase Device Power at 144 MHz? One option is an LDMOS amplifier with MRF9180. Tieto
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EA3CGY kit for amateur radio
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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Where to buy parts for an electronic amplifier?
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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K2TR filters for SO2R and multi operation
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 amplifier RF2K-S for short waves
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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Edit Nokia PA PCB with 2 x BLF7G22L-130N at 2.4GHz
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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Cheap KV PA with V-MOS
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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Two circuits of soft start to the final stages
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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