The Raymarine 240 VHF modular design follows a common aviation design theme.
Pilots flying large aircraft make VHF calls with a hand mike plugged into a bulkhead, change channels with a small control head on the center pedestal, and listen to incoming calls on an overhead speaker. This Raymarine VHF radio matches that design.
Raymarine 240
It has three main components: First, the telephone style handset, which contains all the radio controls, a microphone, and a speaker, second, a large external speaker with volume control, and last, the black box, housing the transmitter and receiver.
Supplied cables connect all the components. A second handset can be added as an option.
The main advantage of a component radio is to minimize the use of valuable panel space.
With the main electronics box located in an out of the way space only the microphone hangs near the helm. The speaker can be mounted in the panel of in an overhead space if panel area is limited.
Performance
We found the performance of the Raymarine 240 to be about average.
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Transmitter power output was very stable though a few watts below the best radios while frequency stability was rated good.
The receiver carries a selectivity rating of greater than 70 dB and attained a sensitivity ranking of good.
Audio output was rated excellent though the sound pressure levels, at 91 dBA, were at the low end of the high-priced radios we tested.
Operation
All the controls including the display screen are located in the handset.
Rocker style pushbuttons on the handset change channels and squelch levels. Another rocker on the side controls handset volume. The push to talk switch is on the side too just above the volume control.
The handset can be used like a traditional microphone or held to the ear like a telephone.
A DSC distress call button is under a plastic cover on the back of the handset.
Seven other pushbuttons located on the handset face control items like transmitter power, scanning, quick select 16 or 9, and select weather channels.
One of the remaining buttons, MENU, brings up a list of six items that control other functions like the haile