MFJ-270 Lightning Surge Protector – SO239S


MFJ Guardian Angel Lightning Surge Protector safeguards your ham radio equipment from damaging static electricity and lightning-induced surge arrest travelling on coax feedlines.

Out of stock


Countless hams have watched their precious radio equipment destroyed by lightning-induced surges travelling on their coax feedlines. Don’t be next! MFJ ultra-fast gas discharge tube safely shunts up to 5000 amps of peak impulse current harmlessly to an independent ground.

MFJ-270 presents a constant 50 Ohm impedance to your transmission line. It has an SWR of less than 1.1:1 and an insertion loss of less than 0.1dB. It can be used up to 1000 MHz. The GuardianAngel handles up to 400 watts PEP. Has SO-239 connectors and works with all types of coax-fed antennas.

MFJ-270 is made of heavy-duty steel with quality connectors and components. replaceable gas discharge tube. MFJ-270 does not protect against a direct lightning hit.

Additional information

Weight0.5 kg