KLM's KT-34A.... Broadbanded, efficient, compact !

The KT-34A is a very special antenna, representing the first significant step forward for tribander design in 20 or more years. It is made for the amateur and the equipment of today, and advanced enough to meet the challenges of the future.

What makes the KT-34A so different from a conventional tribander? Basically, the traps, coils, and capacitors have been discarded in favor of lossless linear-loading and Hi-Q air capacitors, all composed of aluminum tubing. These allow the KT-34A to handle 5kW PEP at an unusually high level of efficiency. The liner loading also makes full 1/4-wave elements possible on 10 and 15 meters, and brings 20 meters much closer to the desirable 1/4-wave than any conventional tribander (the sketch below shows the remarkable metamorphous of the KT-34A design).

Two driven elements are employed to make the KT-34A unusually broadbanded (a concept applied to most KLM antennas). VSWR and performance remain nearly constant across each of the three bands (see VSWR charts). A KLM balun is supplied to allow direct feed from your 50 ohm coax.

Structurally, the KT-34A is build tough. No boom support is required. All the aluminum, including the boom, is strong weather resistant 6063-T832 alloy. All hardware is stainless steel except for the mounting U-bolts. Virtually indestructible Lexan insulators support the elements and insulate them from the boom. Rotation is possible by most any ham rotor. Wind balance and wind survival are excellent. Boom length is only 16 feet.

To meet your future needs, the KT-34A is easily expandable. The KT-34XA Upgrade Kit, which adds two new elements and doubles the boom length, produces substantial increase in performance. Your KT-34A cannot become obsolete!

A great deal of thought and care has gone into the design of this antenna. It's not just another "me too" tribander, but one developed from modern techniques, materials and engineering. We hope you will give it a try. We know you won't be disappointed.

Frequencies of operation:
  14.0-14.350 MHz
   21.0-21.450
   28.0-29.750
Gain: 7 dBd +/- .3 dB across each band
F/S: 30 dB
F/B: 20 dB
Feed Imped: 50 ohms with balun supplied
Power rating: 5kW PEP
Boom: 16 ft. x 3 inch O.D.
Mast: for 2 inch O.D. (standard)
Element length: 24 ft. average
Turning radius: 16 ft.
Wind area: 6 sq. ft.
Wind survival: 100 M.P.H.
Weight:45 lbs
Shipping size: 98" x 9" x 7"
Shipping Wt. 58 lbs.

On top of the KT34A I hope to put my Comet H422V

Newly designed High Power (1kw) 4-Band trap dipole antenna, . Can be used both straight and /or V type. When used as V type, ready to transmit from low position of 3m high from the ground. A CBL-2000, high power 2k/SSB balun, is included as a standard accessory, this also helps prevent TVI, BCI, and other possible sources of interference. Specially developed high power trap coils assure high power QSO's constantly.

• Frequencies : 7,14,21,28 Mhz
• Impedance : 50 Ohm
• VSWR : Less than 1:1.5 at centre frequency
• Maximum input Power : 1Kw SSB
• Connector : M Type ( SO239)
• Maximum Wind Velocity : 35m/sec
• Length : 10.3m straight assembly, 7.4m V type
• Weight : 5.4Kgs
• Rotation Radius : 5.3m Straigt, 3.8m V Assembly
• Suitable mast diameter : 38 - 62mm

Rotator: Emotator 1105 MSX

It handles 700 GD^2 (their formula for mass in kg x square of radius in meters - e.g. as much as a 3 element 40 meter antenna).
wind area 2.5 square meters
Brake torque 10000 kg cm
rotation torque 800 kg cm
Rotate  360 degrees in 75 or 65 seconds.
Mast diameter 40-61 mm
Maximum weight of antenna, 400 kg
6 conductor cable
weight 5.1 kg. 188 mm diameter at its widest and 350 mm high (though mast fits in the top 150 mm)