General Dynamics C4 Systems URC-200 (V2)
69
4.7.3 ECS-8, 8.33 kHz Option
Part Number 01-P42311K001. The ECS-8 option provides three features:
• ECS-8 allows the user to choose a channel spacing of either 25 kHz or 8.33 kHz in the
frequency range of 117.9750 to 136.9750 MHz when in AM PT mode. This is discussed
below.
• ECS-8 also provides 8.33kHz tuning increments over the entire VHF/UHF frequency range
of the transceiver in AM, FM, PT and CT. Normally the tuning increments are 25 kHz, 12.5
kHz and 5 kHz. The ECS-8 option allows the additional 8.33 kHz increment to be entered
directly using the front panel keypad or remote control. See Paragraph 4.7.3.3 for a
description of tuning increments vs. channel spacing.
• ECS-8 also provides an Aviation Mode of operation. When this mode is engaged, the radio
is restricted to AM PT operation in the frequency range of 117.9750 to 136.9750 MHz.
Channel spacing of either 25 kHz or 8.33 kHz is determined by the channel entered into the
radio in accordance with ICAO standards per Annex 10 to the Convention on International
Civil Aviation, Volume V. This is discussed further below.
4.7.3.1 Manual Channel Spacing Selection
This feature is only available in the AM, PT mode in the tuning range of 117.9750 to 136.9750
MHz if the Aviation Mode is not engaged. Enter the desired frequency within this range and then
press [Mode] [2]. The display toggles between 25 and 8.33 to indicate which channel spacing is
selected. The new value takes effect immediately, as indicated by the annunciator, but is not saved
until the [STO] key is pressed.
To Next Page
Loading...
Need help?
General