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Our shop will be closed June 30-July 7, 2025.  No orders will be shipped during this time.  Orders placed will be promptly shipped when we return. Thank you.

We are manufacturers of time tested surge and lightning protection products, found in commerical and amateur radio sites worldwide.

RF protection - AC power mains - RF filters

THE SURGE STOPS HERE.

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QUICK PRODUCT GUIDE

.1 MHz        3MHz                7MHz                       14MHz                      30MHz                  50MHz    100MHz     200MHz              500MHz               1000MHz                    1500MHz

M-300

M-301, M-303

M-302, M-304

M-306

M-308, M-309, M-309H

M-320

M-322

M-325

Coax arrestor, transmit/receive

Coax arrestor, receive only

Open wire line, transmit/receive

This chart shows frequency ranges of our most popular arrestor units.  We also manufacture surge suppression units for AC and DC power!

BOLD part numbers denote high power capability

M-300-PP, M-303-PP  (DC to 6 meters)

M-302-PP, M-304-PP  (DC TO 500 MHZ)

DC