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KHF 1050 SYSTEM INSTALLATION MANUAL
Page 27
Revison 2 23-10-09 Apr/2006
A seldom used mode A3A (USB reduced carrier) is available for use in locations
that may utilize the mode. The reduced carrier (also referred to as a pilot carrier)
allows a receiving station to lock on to the transmitted carrier to minimize
frequency error.
“Table 30 - Modes of Operation” , lists the modes of operation applicable to the
PS440, MC-850 and RM-855.
Table 30 - Modes of Operation
3.B.(2) 23 MHz Limit Mode
The KHF 1050 HF system can be strapped to limit the frequency of operation
to an upper limit of 22.9999 MHz for certification in countries that may require
such an upper frequency limit. If using a PS440 controller, both the KRX 1053
and the PS440 must be strapped for the 23 MHz limit.
MODE OF OPERATION DESIGNATOR
CONTROL UNIT
DESIGNATOR
TECHNICAL
ALTERNATE
PS440 MC-850 RM-855
(note 1)
OLD NEW
A3H H3E AME AM Equivalent AM AM AM
A3A R3E AM Reduced Carrier RC RC
A3J J3E USB Upper Sideband USB V UV UV
A3J J3E LSB Lower Sideband LSB V LV LV
A7J J2D USB Data Upper Sideband Data USB D UD UD
A7J J2D LSB Data Lower Sideband Data LSB D LD LD
H2D AM Data Amplitude Modulation Data AM AM AM
Note 1: When operating with an RM-855 controller, the CW (continuous
wave) mode is selectable. However, this is a receive only function.
The KHF 1050 system does not support CW transmission.
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