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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power amplifier
Power amplifier, behind which there is no other amplifier is called in amateur radio terminology the output stage. The output stages use both bipolar and LDMOS transistors, but even in the 21st century, electronic output stages are very popular.
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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New bias source for HF transistor power amplifiers with bipolar transistors
Having a good signal is a business card of a radio amateur. Having a good signal is a business card of a radio amateur, which years ago
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Z22O Z21A Zimbabwe
Zimbabwe flag 160 – 10m, CW, SSB, FT8, Zimbabwe flag.
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TU5PCT Ivory Coast 2022
Trojica Petr OK1BOA, Petr OK1FCJ, David OK6DJ is preparing for the DX expedition TU5PCT. It is part of a successful S9OK expedition.
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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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S9OK – Sao Tome 2021
Petr OK1BOA, Petr OK1FCJ, Stick OK1CRM, Pavel OK1GK , Ore OK2ZA, Ludek OK2ZC, Karel OK2ZI and David OK6DJ are planning an expedition
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Tuning capacitors and inductance variables OK1TN
Slavek OK1TN has been producing tuning capacitors with plastic and ceramic faces for many years, which are suitable for the output stages, antennas
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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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