60 Votes (4.68 Average) and 8,768 Views  

Antonov An-12 (UR-CNN)
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Antonov An-12 (UR-CNN)

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Ronald Mullins
Great photo. Love the 'full discs'!
ken kemper
Gorgeous paint scheme on this Antonov.......

Great photo Brendan.
jayfulton
Look how much smoke those turboprops generate.
Diana Rose
Love The Livery Paint Job!
Diana Rose
Would someone please tell me why a million $ plane has to have that outside wire strung from top of the rudder to top of the cockpit? It seems like an after-thought, but there has to be a valid reason. Used to see it on older aircraft.
warmwynds
It might be that they have a radio transmitter with a particular frequency range, perhaps high-frequency band which requires this lengthy wire. That would be my guess.
Dave Sheehy
That is an ADF sense antenna.

All ADF systems have loop and sense antennas. With the older ADFs, they are two separate antennas. The loop antenna is a flat antenna usually located on the bottom of the aircraft, while the sense antenna is a long wire that often runs from top of the tail to the top of the of the cabin.

https://www.avweb.com/avionics/adf-basics/
CHRIS ROBEY
Good point Dave! By coincidence, I have just been looking through a dusty volume from the late 1960's on ADF theory. I probably once knew but had sadly long since forgotten, that with the very early DF direction finding systems (think Douglas DC2's), it was necessary to turn the aircraft onto various different headings to check the bearing to/from a station, so as to work out your position. But this function was later able to be incorporated into the unit, hence the "A" for automatic in "ADF".
ACTIVITY LOG
Want a full history search for UR-CNN dating back to 1998? Buy now. Get it within one hour.
Date Aircraft Origin Destination Departure Arrival Duration
19-Apr-2024 UnknownSkopje ()Leipzig/Halle () 06:15PM CEST 09:10PM CEST 2:55
18-Apr-2024 UnknownLeipzig/Halle ()Skopje () 07:50PM CEST 10:16PM CEST 2:26
18-Apr-2024 UnknownSkopje ()Leipzig/Halle () 03:14PM CEST 06:09PM CEST 2:55
17-Apr-2024 UnknownPalma de Mallorca (or Son Sant Joan) ()Skopje () 02:49PM CEST 05:36PM CEST 2:46
12-Apr-2024 UnknownLondon Stansted ()Palma de Mallorca (or Son Sant Joan) () 06:39PM BST 10:31PM CEST 2:51
11-Apr-2024 UnknownLeoš Janáček Ostrava ()London Stansted () 05:03PM CEST 06:55PM BST 2:51
10-Apr-2024 UnknownNear Sitia, CreteLeoš Janáček Ostrava () First seen 02:39PM EEST 05:19PM CEST 3:39
09-Apr-2024 UnknownKing Abdulaziz Int'l ()Near Yanbu (also known as Yenbo) 07:52PM +03 Last seen 08:18PM +03 0:26
09-Apr-2024 UnknownMoi Int'l ()King Abdulaziz Int'l () 12:30PM EAT 06:19PM +03 (?) 5:48
08-Apr-2024 UnknownNear KisumuMoi Int'l () First seen 02:20PM EAT Last seen 03:52PM EAT 1:31
Basic users (becoming a basic user is free and easy!) view 3 months history. Join
 

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