T-4G

T-4 & T-4G

and

T-4 Plus & T-4G Plus

"The RFI Quick Fix^tm"

T-4G shown, T-4 does not have the ground strap

	T-4 & T-4G	T-4 Plus & T-4G Plus
Type	Current	Current
Design Impedance	50 ohms in and out	50 ohms in and out
Operating Bandwidth	160 - 10 m	160 - 6 m
Power Loss, dB	Nil	Nil
Saturation Resistant	Yes	Yes
Internal Transmission Line Z	50 Ohms	50 Ohms
Core Type	Ferrite	Ferrite
Power Rating @ 3.5 MHz	> 1500 watts if SWR < 3:1, SSB/CW duty cycles *	> 1500 watts if SWR < 3:1, SSB/CW duty cycles *
Phase Delay	6.2 degrees @ 3.5 MHz	6.2 degrees @ 3.5 MHz
Load Variation Tolerance	Excellent	Excellent
Input connector	SO-239	SO-239
Output Connector	SO-239	SO-239
Size	2.3" x 8"	2.3" x 8"

* Not rated for AM, RTTY or other high duty-cycle modes.

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.

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.

Go to our General Catalog for the latest prices and information.

The Big Gun weapon in the fight against RFI High isolation Break up ground loop more effectively Stop RFI End RF feedback problems Does not affect signal path or antenna matching

For really tough RFI and RF feedback problems, you can't beat the new T-4 and T-4G Ultra Line Isolators^tm. 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 and T-4 Plus is many times more effective.

How does the Line Line Isolator system work?

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