Overview The Kenwood TS-440S is an HF transceiver introduced in the mid-1980s by Trio-Kenwood. It was designed for amateur radio operators requiring solid-state performance across multiple HF bands with digital frequency control. The TS-440S became widely used due to its … Continue reading →

Overview The Kenwood TS-770 is a multimode VHF/UHF amateur radio transceiver covering the 2 meter and 70 centimeter bands. Introduced in the early 1980s, it was designed as a base station unit with integrated all-mode capability including SSB, CW, FM, … Continue reading →

The Kenwood MA-4000 is a high-performance diplexer/duplexer engineered for amateur radio applications. It facilitates simultaneous operation on the 2-meter (144–148 MHz) and 70-centimeter (430–440 MHz) VHF/UHF frequency bands. This device enables a single dual-band transceiver to interface with separate VHF … Continue reading →