Through the careful design of our ARC-PLUG (tm) gas tube module and precision constant impedance thru-line, allowing proper firing characteristics, our devices are designed to provide effective protection through out this entire spectrum. Other surge protector designs may only utilize simple VLF filters with no gas tube back-up.

Excellent broadband performance from DC thru 3 GHz, compared to the narrowband DC blocked or stub designs. Typical dB loss: 0. 1 @ 1 GHz; 0.2@ 2 GHz; 0.5@ 3 GHz.

Innovative impedance compensated thru-line cavity design allows control voltages to pass thru the device, instead of the "wire around" requirement of DC blocked designs. Our design allows "in-circuit" cable sweeps.

Innovative fast acting gas tube replaceable ARC-PLUG module can be removed and replaced in the field in about one minute with no tools required, and without having to remove the protector from the circuit. The "O" ring sealed knurled knob does the trick!

The ARC-PLUG module and connectors are "O" ring sealed for complete weatherproofing

Effective performance. Due to our carefully designed reactance compensated thru-line cavity and ARC-PLUG (tm) module placement, our customer and government test approvals show our design is as good as, or better than, DC blocked designs.

DC blocked designs require the entire unit to be discarded if hit with a surge beyond ratings. They are not field repairable. Our design simply requires the ARC-PLUG (tm) module to be replaced in the field. No tools required.

200 watt models: 200 watts RF at a VSWR of 3:1 generates a voltage of 173.2 volts. The gas tube in this model is rated at 350 volts.

2 kW models: 2 kW RF at a VSWR of 3:1 generates a voltage of 547.7 volts. The gas tube in this model is rated at 1000 volts.

The primary protection for antenna connected communications equipment is the

RESPONSE TIME of the protector, the time it takes to crow-bar to ground, from the

initial leading edge voltage of the atmospheric surge pulse. During the response time,

and until grounded, a voltage “spike” gets through the protector. The response time to

ground of Alpha Delta surge protectors, due to careful electrode spacing and gaseous

content, is typically 80 nanoseconds (all waveforms based on IEEE specs). This allows

such a small amount of joules of energy, which does the damage, to get through that

even small junction semiconductor devices (PIN diodes, MOSFETS) are effectively

protected.

The transition time for each protector model is different, based on gas tube voltage

ratings and design, but both provide effective protection. For maximum protection, a

model should be chosen that is closest to the RF power being employed. For example,

200 watt model for a receiver or transceiver, a 2 kW model for an amplifier. Both

models can be effectively used in such a set-up. ATTENTION to proper grounding

techniques is CRITICAL!

Alpha Delta TT3G50 LIGHTNING PROTECTOR datasheet
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