Introduction OM0A PA MRF150 x 4

PA MRF150 x 4

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Bandpass filters for power PA

Last year, I gradually acquired the key building blocks of the new transistor PA: locker, transformer, DPS PA 4x MRF150 a Block bandpass filters a military transmitter. The filters are switched relay and dimensioning seems to be sufficient for high performance.

switching will be managed in parallel with the antenna band decoder.

cooling the two-point, the whole construction will be cooled by a fan on the rear panel, heat from power transistors will be done through a copper plate on a large aluminum heatsink. Source will be stabilized, classical design of toroidal transformer.

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William OM0AAO / OM0A
Since I started regularly participate in the amateur race, separately for the first VHF, later in the club OM3RKP also VKV. Since gaining access to the TA to work in this area only, primarily contesting (CQWW, IARU HF, SSB Liga, Dippeth and other).