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DESCRIPTION VHF/FM
RADIO SET
The AN/ARC-201 provides two-way frequency modulated ( FM ) narrowband voice communications.
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| VHF/FM RADIO ( AN/ARC-201 ) |
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DESCRIPTION VHF/FM
RADIO SET
The AN/ARC-201 provides two-way frequency modulated ( FM ) narrowband voice communications.
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| CONTROL / INDICATOR | FUNCTION | ||
| ( Function Selector ) | |||
| 1.--OFF |
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| 2.--TEST |
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| 3.--SQ ON | RT on with squelch. | ||
| 4.--SQ OFF | RT on with no squelch. | ||
| 5.--RXMT | RT in RECEIVE mode. Used as a radio relay link. | ||
| 6.--LD | Keyboard loading of preset frequencies | ||
| 7.--LD-V | TRANSEC variable loading is enabled. | ||
| 8.--Z-A | Not an operational position. Used to clear the TRANSEC variable. | ||
| 9.--STOW | All power removed. Used during extended storage. |
| MODE SWITCH | FUNCTION |
| 1.--HOM | Homing antennas are active; communication antenna is disconnected. Provides pilot with steering, station approach, and signal strength indicators. |
| 2.--SC | Single channel mode of operation. Operating frequency selected by PRESET switch or keyboard entry. |
| 3.--FH | Frequency hopping mode selected. PRESET switch positions 1-6 select frequency hopping net parameters. |
| 4.--FM-M | Frequency hopping-master position selects control station as the time standard for communicating equipment. |
| PRESET SWITCH | FUNCTION |
| 1.--MAN | Used in the single mode to select any operating frequency in 25KHz increments. |
| 2.--POS. 1-6 | In single channel mode, preset frequencies are selected or loaded . In FH or FM-M mode, frequency hopping nets are selected. |
| 3.--CUE | Used by a non-ECCM radio to signal to CUE or ECCM radio. |
| IFM RF | FUNCTION |
| 1.--OFF | ( Bypass ) - 10 watts. |
| 2.--LO | ( Low Power ) - 2.5 watts. |
| 3.--NORM | ( Normal ) - 10 watts. |
| 4.--HI | ( High Power ) - 40 watts. |
| DISPLAY | The display generally operates in conjunction with the keyboard. Other displays may be selected by the FUNCTION and MODE switches. |
| KEYBOARD | A 15-button array of switches in a 4x4 matrix, used to insert data or select data for display. The keyboard is comprised of 10 numerical buttons, three special functions, and two command buttons. |
| 1.-- Switches 1-9 | Used to key in frequencies, load time information, or offsets. |
| 2.-- CLR | Used to zeroize the display, or to clear erroneous entries. |
| 3.-- 0 (H*LD) | Used to enter zeros. Second function ( hold ) initiates transfer of ECCM parameters. |