T-4 & T-4G

T-4-500

T-4 Plus & T-4G Plus

Current

Current

Current

50 ohms in and out

50 ohms in and out

50 ohms in and out

160 - 10 m

160 - 6 m

160 - 6 m

Nil

Nil

Nil

Yes

Yes

Yes

50 Ohms

50 Ohms

50 Ohms

Ferrite

Ferrite

Ferrite

> 1500 watts if SWR < 3:1, SSB/CW duty cycles *

500 PEP watts PEP if SWR < 2:1, SSB/CW duty cycles *

> 1500 watts if SWR < 3:1, SSB/CW duty cycles *

6.2 degrees @ 3.5 MHz

6.2 degrees @ 3.5 MHz

Excellent

Excellent

Excellent

SO-239

SO-239

SO-239

SO-239

SO-239

SO-239

2.3" x 8"

2.3" x 8"

The T-4 and the T-4G are identical. The T-4G has a built-in ground strap for direct connection to your ground system. This provides maximum attenuation of any RF traveling along the outer surface of the coax's shield.

The T-4 Plus and the T-4G Plus are identical to the T-4 and T-4G respectively but with increased bandwidth.

The T-4-500 has an isolation factor that is higher than the standard models. They are far smaller in size and weight, too. the power rating is 500 watts PEP SSB/CW service. This makes them perfect for interconnecting a transceiver and a linear amplifier. In low power installations, considerable space can be saved using the T-4-500.

Applications: Top-of-the-line, maximum isolation Line Isolators. Replaces 4KRF-LI, 4KV-LI and T-3 with specifications exceeding those it replaces. Use in all RFI applications and as a retrofit device following standard baluns used in antenna already fitted with a balun.

For really tough RFI and RF feedback problems, you can't beat the new T-4 and T-4G Ultra Line Isolators™. The T-4G shunts stray RF directly to ground with its built-in ground strap. Stray RF hasn't got a chance, yet signal attenuation is zero!

Use the T-4 when a direct ground path is not possible.

The T-4 is perfect for use with Vertical Antenna system. Install at the antenna's feedpoint. If you can install a T-4G you have the ultimate in Vertical antenna feedline isolation.

If you have one of the new rigs which covers HF + 6 meters, then the T-4 Plus or T-4G Plus are the ideal choices.

Install the T-4 between transmitter and linear. If you have ground loop problems, there is no more effective way to break them up than with the incredible isolation of the T-4.

Install the T-4 between the transmitter or linear amplifier and your tuner. Use single-point ground at the tuner (all equipment ground go to the tuner ground as does the ground wire to your ground system) in combination with the T-4 and you're tuner works like it's supposed to and so does your linear.

Using a T-4 following the balun supplied with your beam and produce a measurable improvement in F/B and F/S ratios. There is no better way to eliminate feedline radiation.

If you are using a coil of coax as a choke balun, the T-4 or any of our Line Isolators™ will be far more effective.