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Monster Media 1993 #2
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TM732A.2
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1992-11-17
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TM732A.2
Operating Features
Kenwood has done a fairly good job at maintaining a consistent
user interface between their models. Being familiar with the
241 and 741, I found it pretty intuitive to operate. Not
intuitive enough, however, to venture out of the house without
taking the operators manual along since they sadly omitted a
quick reference card (like the give out with the 741). Unless
otherwise noted, the 732 generally has the same basic feature
set as the TM-241 plus several extras.
The following is an unordered list of outstanding bits of trivia
regarding the 732's features:
1. Dual In-Band Receive: Competitive pressures (e.g. Icom's
2410) has now made this a standard. You can set the display to
receive any combination of: VHF/UHF, VHF/VHF or UHF/UHF. This
capability is quite well engineered and makes it possible to
transmit as well as receive on either band's second display. It
is not possible (understandably) to have a full duplex QSO on an
in-band setup. In other words, when you set the radio to
monitor two UHF or two VHF frequencies, one of these frequencies
is muted when you transmit on the other. This is not so when
the selection is VHF/UHF, where the receiving band is not muted
during transmit.
Looking at the schematic, the dual in-band receive is well
implemented with each of the transceiver boards having two
receiver front end units (RF amp and mixers), one for each
band. There are some unsymmetrical aspects to the dual in-band
receive. First, the UHF receiver does not have an AM mode which
means that you cannot monitor AM aircraft spectrum at 118-136
MHz with the UHF receiver. Similarly, you cannot monitor 800
MHz with the VHF receiver. Each of these modes AM aircraft and
800 MHz, are unique to the VHF and UHF receivers respectively.
A nice touch is that even though the second receiver is utilized
on the other band, the transmitter is automatically switched
back to the proper band which allows you to transmit on either
of the two frequencies while using the dual in-band mode.
CONTINUED IN TM732A.3