Icom IC-7850 Instruction Manual page 2

PREFACE
ABOUT CE AND DOC
Hereby, Icom Inc. declares that the versions of IC-7851 which have the "CE" symbol on the product,
comply with the essential requirements of the Radio Equipment Directive, 2014/53/EU, and the re-
striction of the use of certain hazardous substances in electrical and electronic equipment Directive,
2011/65/EU. The full text of the EU declaration of conformity is available at the following internet ad-
dress:
http://www.icom.co.jp/world/support
DISPOSAL
The crossed-out wheeled-bin symbol on your product, literature, or packaging reminds you that in
the European Union, all electrical and electronic products, batteries, and accumulators
(rechargeable batteries) must be taken to designated collection locations at the end of their work-
ing life. Do not dispose of these products as unsorted municipal waste.
Dispose of them according to the laws in your area.
Thank you for choosing the IC-7850/IC-7851. The IC-7850/IC-7851 has many
built-in high technology circuitry and unique functions, such as the Dualwatch
on the Main and Sub bands, a high speed spectrum scope scan, a high-reso-
lution waterfall screen, and many other outstanding features.
The internal frequency signals in a radio utilizing a PLL are not always suf-
ficiently pure. This results in a considerable number of unwanted spurious
components, called phase noise, in its frequency spectrum. We focused inten-
sively in drastically reducing the phase noise of LO (Local Oscillator) because
the phase noise degrades the interference rejection and noise characteristics
of the receiver. As a result, we succeeded in developing an LO with high pu-
rity outputs so that results in an RMDR (Reciprocal Mixing Dynamic Range)
of 110 dB with newly developed 1.2 kHz Optimum Roofing Filter. Currently no
competitors have been able to achieve this extremely high result performance.
We believe we would not have been able to exceed the standard specifica-
tions without our full focus on LO purity.
In addition, Icom that has chosen to base the IC-7850/IC-7851 on an up-
conversion, double super-heterodyne receiver design, which has many advan-
tages over traditional receiver designs.
We are proud to have developed the IC-7850/IC-7851 for your amateur radio
activities, and hope it brings you years of enjoyable operation.
Please read this instruction manual thoroughly before using the IC-7850/IC-
7851.
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