[Milsurplus] Collins CU-991 AR Coupler - Correcting My Mistakes
Mike Morrow
kk5f at earthlink.net
Mon Feb 15 20:03:12 EST 2010
I've dug out my 180L-2, CU-351/AR, and CU-991/AR and some documentation.
I need to correct some statements that I wrote on 04FEB2010.
Incorrect statements:
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I think the only difference between the military CU-991/AR and the
commercial 180L-3 is the type of front panel control/power connector.
But I may be wrong about the connector...my 180L-3 is in storage.
The CU-991/AR is the auto antenna tuner that goes with the AN/ARC-38
and -38A sets. It is rated for 2 to 25 MHz. It was also used with
later AN/ARC-94 and -102 (618T-2 and -3) sets (2 to 30 MHz) before
the wider frequency range CU-1669/AR was available.
-----------------
Corrected statements:
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The CU-991/AR appears to be identical to the commercial 180L-2, including
the same control connector. The CU-991/AR was used with the AN/ARC-94 and
-102 until the CU-1669/AR was available.
The CU-351/AR appears to identical to the commercial 180L-3, except that it
uses some sort of Amphenol-type control connector in place of the Cannon-type
of the 180L-3. The CU-351/AR was used with the AN/ARC-38 and -38A.
-----------------
Mike / KK5F
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