[ARC5] Unknown coil

[Sandy]

Looks like some kind of variometer?  (If the coils are connected together in 
series)  If they are separate
then may be just a tank inductor with a variable coupling link.  That's my 
guess anyway.  Some transmitters used variometers (variable inductors) in 
the 2 Mhz marine band which is still considered "MF".



73,

Sandy W5TVW
-----Original Message----- 
From: Michael A. Bittner
Sent: Wednesday, May 30, 2012 6:57 PM
To: milsurplus at mailman.qth.net ; arc5 at mailman.qth.net ; 
ArmyRadios at yahoogroups.com
Cc: boatanchors at puck.nether.net
Subject: [ARC5] Unknown coil

Can anyone help me identify what unit this coil was original meant for?  It 
is 2-inches in diameter by 2.25-inches long and is marked L-107.  It has a 
coupling coil inside that can be rotated for minimum to maximum coupling via 
the shaft that projects out at one end at a 45-degree angle.  Its rugged, 
quality construction suggests a military unit of some kind.
https://www.dropbox.com/gallery/56278480/1/L-107?h=9e44f3

Please click on the pictures for full size views.  Mike, W6MAB
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