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Glass Radio Strain Insulators

Radio strain insulators are used to insulate either end of a wire antenna from the tower or other mounting hardware.  The smaller styles were frequently used by HAM radio hobbyists for back yard antenna installations.  There is a tremendous variety of these available and there are collectors that specialize in these styles.

3.5 in

"CONSOLIDATED"

 

3.0 in

Unembossed

3.5 in

Unembossed

3.5 in

S. BRACH MFG. CO.

3.5 in

Unembossed

3.5 in

KNOX

3.5 in

Unembossed

3.5 in

Unembossed

3.5 in

Unembossed

By far, the bulk of radio strains are found in clear glass.  Here is a variety of smaller clear glass styles.

 
   

 

3.0 in

Unembossed

   

 

3.0 in

Unembossed

4.75 in

Unembossed

 

 

3.0 in

Unembossed

 

 

3.0 in

Unembossed

4.75 in

Unembossed

 

3.5 in

S. BRACH MFG. CO.

 

3.5 in

Unembossed

 

3.5 in

Unembossed

Strains can also be found in a great variety of colors.  Aqua and purple shades are shown here, but green and cobalt blue are also known.

4.0 in

Unembossed

\

4.0 in

FLERON

 

3.5 in

PYREX

 

3.0 in.

Unembossed

 

3.5 in

FLERON

7 in PYREX       

7 in PYREX 

Additional Clear strain examples   

Two large 12 inch Corning Pyrex styles

 

 

 


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