[Milsurplus] Nonmagnetic TCS cabinet ?

[Nick England]

Besides the ID tag photos and contract number, I found this service note -

TCS NON-MAGNETIC CABINETS FOR USE ABOARD MINESWEEPIHG VESSELS
Long Beach Naval Shipyard in complying with Field
Changes 10-TCS-1 through TCS-15 entitled SUBSTITUTION
OF NON-MAGNETIC-ALUMINUM CABINET IN PLACE
OF STEEL CABINET, discovered that some original
cabinets being replaced were made of non-magnetic
chrome-nickel stainless steel. These stainless steel
cabinets were found to have a magnetic permeability of less
than l.2 when measured on a permeability indicator.
In view of the above and in the interest of economy,
activities should accomplish this field change only on
original equipment cabinets found to be magnetic by actual
test when these equipments are to be installed on wooden
or non-magnetic mine-sweeping vessels.

Nick England K4NYW
Chapel Hill NC
www.navy-radio.com

On Thu, Mar 19, 2026 at 2:26 AM Hubert Miller via Milsurplus
<milsurplus at mailman.qth.net> wrote:
>
> Maybe two decades ago i sold a TCS, Navy radio cabinet. It was nonmagnetic. Cabinet only, no radio had i ever with it.
>
> Reading a WSJ article about Iran’s sea mines reminded me of this.
> But - - a nonmagnetic cabinet TCS, when you still had the engine below the radio deck ? And transformers and such
>
> inside the radio – lots of magnetic material ? This makes me wonder. I tend to disbelieve that this special cabinet
>
> was for anti – sea mine purposes. What say ye ? I don’t remember that the cabinet had any  ‘ -number ‘ suffix marking
>
> inside to identify it.
>
> -Hue Miller
>
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