Yaesu FT-450D HF and 6 Meter Transceiver
Manufacturer: Vertex Standard, 6125
Phyllis Dr, Cypress, CA 90630; tel 714-827-
The FT-450D adds a standard internal antenna tuner, new CW filter bandwidths and several ergonomic upgrades to the original FT-450. These refinements make a popular low cost transceiver even better.
So what is different on this new and improved FT-450D? There are six significant upgrades to the original FT-450:
- Internal automatic antenna tuner
- New knob design
- New standard hand microphone
- Button illumination
- Foot stand
- 500 Hz and 300 Hz CW filters
Let’s see how the advertised improvements stand up.
The original FT-450 had as an option an internal automatic antenna tuner, the ATU-450. The new D model includes an automatic antenna tuner that covers the 6 to 160 meter bands and will, according to the manual, match impedances between 16.7 and 150 Ohm. The manual also cautions that antennas such as non - resonant whips and wire antennas such as G5RVs may not be within the matching range of the tuner.
The D model DSP filter has width settings on CW for 300 Hz, 500 Hz and 2.4 kHz. Lab tests indicate that the 500 Hz filter setting on the D model measures close to 500 Hz. This is a significant improvement over the CW filter in the original FT-450 transceiver. The original review commented on operation of the DSP filter bandwidths on CW. The filter was not continually adjustable as commonly found on other radios and had fixed settings at different widths for SSB, CW, AM and FM. The filter widths for CW were 500 Hz, 1.8 kHz and 2.4 kHz. The narrowest setting, 500 Hz, tested in the lab at closer to 600 Hz; either way it proved to be too wide for very crowded band conditions.
Reviewed by Mike Corey, W5MPC
ARRL Emergency Preparedness Manager