V/UHF Flashcards
(22 cards)
Which two modes of frequency hopping provide the Electronic Counter Countermeasures (ECCM)?
Havequick 2 (HQII) and Second-generation Anti-jam Tactical UHF Radio for NATO (SATURN)
How do the V/UHF radios communicate with the Control, Display and Navigation Units (CDNU)?
Via the 1553B avionics databus
Why is it important the Talon radio has an accurate Time-of-Day (TOD)?
To ensure frequency hops take place at the right time and for the correct duration
What initialisation information do the frequency hopping modes Havequick 2 (HQII) and SATURN require?
Word-of Day (WOD), Time-of-Day (TOD), current day and net number
Locate the VUHF antenna
Underside of tailcone, halfway down
Where is the V/UHF 1 Transmission Security (TRANSEC) fill port located?
In the rear avionics bay
[Drag and Drop] Locate the VUHF Tx/Rx
Rear bay, looking forward, middle shelf (which has 3 sections), component on the right side of the left shelf section
What could happen if the duty cycle is not allowed to happen?
May cause degradation or internal damage to the Transmitter/Receiver (Tx/Rx)
[Drag and Drop] Which V/UHF 2 system antenna can transmit on VHF and UHF frequencies?
Aerial on the lower fuselage directly inline with the cockpit footwell transparencies
[Drag and Drop] Which V/UHF 2 system antenna can only transmit on UHF frequencies?
Aerial on the centre line of nose just prior to the windscreen
[Note: Post mod aircraft have this aerial between the two exhausts]
Where are the V/UHF 2 and V/UHF 3 Transmission Security (TRANSEC) fill ports located?
On the pilot’s electrical console, adjacent to the pilot’s doorway
Which component prevents incompatible frequency/antenna selections from being made on V/UHF 2 radio system?
Control, Display and Navigation Unit (CDNU)
When will the Control, Display and Navigation Unit (CDNU) make an automatic selection between the upper and lower V/UHF 2 antennas?
When VHF guard is selected for the V/UHF 2 radio on the Emergency Control Panel (ECP)
What antenna(s) is the V/UHF 3 Talon radio able to use?
The VHF antenna, the upper UHF and lower V/UHF 2 antennas
How is access to the Crypto page achieved for the V/UHF radio controls on the Control, Display and Navigation Unit (CDNU)?
Via the appropriate line key selection from the Communications menu (COM) 2/2 page
What is the purpose of the Frequency Modulation (FM) immunity filter?
It blocks unwanted FM signals that may cause interference
How many preset maritime channels are permanently stored in the V/UHF radio?
57
When carrying out a Word of Day (WOD) fill how is a correct entry confirmed on the V/UHF radio system?
By a double audio tone on the headset
When is V/UHF radio relay mode used?
When the intended receiver is out of range of the transmission originator
How is an appropriate V/UHF radio selected for a secure mode operation achieved?
By pressing the SEC button on the Communication Control Panel (CCP), followed by pressing the selected radio button within 5 seconds
How is a received secure audio transmission indicated on the V/UHF radio system?
The associated SRX annunciator illuminates on the Communications Control Panel (CCP)
When is it not possible to execute an Initiated Built-In Test (IBIT) on the V/UHF radio system?
If any of the following actions are active: fill operations, Guard discrete(s), Press-to-Transmit (PTT)
