class e rf pa

7 links

Testing Dipole vs Indoor Magnetic Loop Antenna - Testing performances of indoor antenna. A comparison of a magnetic loop antenna vs a classic wire dipole done using wsprlite on 30 meters band.
[ Hits: 856 | Votes: 2 | Rating: 5.5 ]

ESCANERFRECUENCIAS - Spanish amateur radio forum with classifieds
[ Hits: 520 | Votes: 1 | Rating: 10 ]

Morse code practice - A comprehensive morse code auduio guide with several youtube movies classified by skill level, characters and numbers, sentences, speed level and more. All movies are linked by an interactive interface that let you select the speed and the excercise type. The page contains an downloadable set of morse code exercises and several other resources
[ Hits: 134 | Votes: 0 | Rating: 0 ]

FT 1000MP MK V and Keyclicks - YaesuFT1000MK V stands out with improved close-spaced SSB transmit performance, reversing a trend seen in other modern radios. Featuring a class-A mode, it offers clean HV finals when kept out of ALC. However, two significant flaws persist: the noise blanker causes receiver IM distortion, and the transmitter lacks wave-shaping on CW, resulting in pronounced keyclicks. Preliminary tests reveal strong keyclicks +1kHz and -1kHz, prompting a combined modification to address both issues.
[ Hits: 31 | Votes: 0 | Rating: 0 ]

CBC International CB Radio - "CB books, plans, and kits. Repairs, modifications, 10-Meter conversions, amplifiers, FM, unique high-performance accessories. Publishers of the classic ""Screwdriver Expert's"" Guide book."
[ Hits: 10845 | Votes: 13 | Rating: 5.85 ]

600 Watt HF Amplifier ^pop - Schematics plans by K9GDT and all infos to build a 600 Watt HF Amplifier. The amplifier uses four Motorola MRF150 50 volt TMOS power FETs configured in push-pull/parallel and biased for class AB linear operation.
[ Hits: 70395 | Votes: 127 | Rating: 4.45 ]
W2DTC Homebew RF Amplifier - Grounded grid, Cathode driven, 3CX3000F7 Triodes
[ Hits: 2137 | Votes: 3 | Rating: 6.33 ]