KLM - 15M-LD - YAGI TYPE BEAM ANTENNA - 6 ELEMENTI MONOBAND - OPTIMIZED FOR 15 METERS (21 MHz)

WORLD CLASS EXTRA HF ANTENNAS ...
KLM's World Class Extra series of antennas are designed to satisfy the needs of the most serious DX operator. The
80M-3, 40M-4 and the 20M-15M-10M 6 element monobanders offer the ultimate in performance with no compromises.
The electrical designs are devised to achieve maximum gain, bandwidth, and front-to-back ratios. Construction materials
and techniques are selected for maximum strength and durability. All of KLM's World Class Extra antennas use
multiple driven elements. The average multi-element Yagi type beam antenna with only a single driven element is
essentially a high Q system. Maximum gain, maximum F/B ratios, minimum VSWR and cleanest patterns are possible
only over a very narrow frequency range; for example over the phone or CW portions of an amateur band. The Q of a
single driven element becomes extremely high in the presence of multiple parasitic elements when these elements are
adjusted tor optimum performance. The Q can be reduced and the bandwidth increased by manipulating the dimensions
of the parasitic elements, but at the expense of reduced gain and F/B ratios. This undesirable situation can be remedied
by the use of two driven elements fed in parallel and tuned to different frequencies - one frequency near the bottom and
one near the top of the amateur band. The parasitic elements can now be adjusted tor maximum gain and F/B ratios
rather than tor broad VSWR curves. This is the familiar "log-cell" driven element system derived from log-periodic
antenna design that is used in most of KLM's HF antenna designs. The response of KLM dual-driven element antennas
rolls off very rapidly outside the specified band coverage thus providing an added bonus in the form of lessened radiation
on adjacent frequencies. KLM uses boom-insulated elements throughout. This provides total isolation of the antenna
elements from the boom and minimizes possible interaction effects from the boom. Exclusive KLM designed insulators
are molded of a special glass-filled materiai which has excellent insulating properties and extremely high mechanical
strength. The form is webbed .... heavily reintorced at stress points to withstand high winds safely. To minimize unsightly
"droop" in long elements, the mounting angle is tilted slightly upward.

HF MONOBAND YAGIS ...
KLM high performance monobanders are the answer for quality installations where larger models are not practical or
necessary. Moderate in size, they can be easily stacked with other beams without overloading the tower/rotor capabilities.
KLM monobanders offer many of the superb performance and construction features of the World Class Extra
series. KLM's dual-driven element system provides full performance and broadband coverage, in many cases across
the entire amateur band! Matching problems are eliminated with the KLM 3-60-4:1 baluns which are rated to 5kW PEP.
6063-T832 aluminum alloy, massive insulators and stainless steel hardware (except U-bolts), along with swaged boom
sections assure years of trouble-free, consistent performance. The 40M-3, 40M-4, 20M-5, 20M-6, and the 15M-6 are
also available with a heavy duty boom (1/4" wall) at an additional cost. The 80M-2 and 80M-3 come with the heavy duty
boom.

ELECTRICAL

• OPERATIONAL BAND: 21.0-21.45 MHz
• BANDWIDTH: 450 kHz
• GAIN: 10.5 dBd
• FRONT TO BACK: 30 dB
• S.W.R. MAX.: 1.5:1
• IMPEDANCE: 50 OHM
• BALUN: 4:1, 5kW p.e.p. , INCLUDED

MECHANICAL

• LONGEST ELEMENT 7.62 m. (25 ft.)
• BOOM LENGHT: 10.97 m. (36 ft.)
• TURN RADIUS: 7 m. (23 ft.)
• WINDLOAD AREA: 0.45 mq. (5 sq.ft.)
• WEIGHT: 15,42 kg. (34 lbs.)
• BOOM DIAMETER: 3" (7.6 cm.)
• MAST ACCEPTED: UP TO 2" (3 OPTIONAL)

KLM - 40M2/3 - 40M-2 TO 40M-3 UPGRADE KIT - ALL YOU NEED TO UPGRADE YOUR EXISTING 40-M2 TO A KLM 40M-3, 3 ELEMENT 40 METERS BEAM

COMPARE DATA

SIRIO - SD27 - HALF WAVE DIPOLE FOR THE 11 METERS CB BAND - USEABLE FROM 26.5 TO 28 MHz - CAN BE RETUNED TO 10 METERS

1/2 wave dipole antenna working on 27MHz with Gamma Match System. 
Completely made of anticorodol aluminum and supplied with Boom and steel bracket for the fitting on the support mast. 
The fixing part with rapid mounting system is made of die-cast metal to get the maximum strength and robustness. 
The radiai whip is earthed and is supplied with jointing sleeves of polythene for a perfect waterproofing. 
Its connector is UHF Female and is supplied with a protective rubber cap suitable for coaxial cables like RG58/RG213 and their connectors.

The dipole can be tuned up to 10 meters (30 MHz). Trimming chart data is included in the manuale (see product sheet)

TECHNICAL DATA

• Type: ......... Half Wave Dipole
• lmpedance: .............. 50 ohm
• Frequency Range: .................... 26.5-28 / 28.5-30 MHz
• Polarization:...................vertical/horizontal
• V.S.W.R ..... at Freq. Res. 1,1:1
• Max. Power ................ 1000 Watt
• Bandwidth: ............................... 1500 kHz with very low VSWR and up to 3750 kHz with higher VSWR (2:1)
• Gain: .............................. 0 dBd, 2,15 dBiso
• Connection: ............................ UHF Female
• Boom Length (approx): ......... ..... 1400 mm
• Boom Diameter: ......... 0,33 mm in aluminum
• Radiator Length: ......................... 5400 mm
• Weight: (approx): ..................... 2.8 kg
• Mounting Mast: ........... 35/50 mm diameter

KLM - 10M-4 - 4 ELEMENTS 10 METERS BAND BEAM - OPERATING FROM 28 TO 30 MHz - DOUBLE DRIVEN ELEMENT

HF MONOBAND YAGIS 
KLM high performance monobanders are the answer for quality installations where larger models are not practical or
necessary. Moderate in size, they can be easily stacked with other beams without overloading the tower/rotor capabilities.
KLM monobanders offer many of the superb performance and construction features of the World Class Extra
series. KLM's dual-driven element system provides full performance and broadband coverage, in many cases across
the entire amateur band! Matching problems are eliminated with the KLM 3-60-4:1 baluns which are rated to 5kW PEP.
6063-T832 aluminum alloy, massive insulators and stainless steel hardware (except U-bolts), along with swaged boom
sections assure years of trouble-free, consistent performance.

KLM - 11M-4 - 4 ELEMENTS 11 METERS BAND BEAM OPERATING 26.8-27.4 MHz AND TUNABLE 28-30 MHz - DOUBLE DRIVEN ELEMENT

HF MONOBAND YAGIS 
KLM high performance monobanders are the answer for quality installations where larger models are not practical or
necessary. Moderate in size, they can be easily stacked with other beams without overloading the tower/rotor capabilities.
KLM monobanders offer many of the superb performance and construction features of the World Class Extra
series. KLM's dual-driven element system provides full performance and broadband coverage, in many cases across
the entire amateur band! Matching problems are eliminated with the KLM 3-60-4:1 baluns which are rated to 5kW PEP.
6063-T832 aluminum alloy, massive insulators and stainless steel hardware (except U-bolts), along with swaged boom
sections assure years of trouble-free, consistent performance.

HY-GAIN - 153BAS - COMPUTER-OPTIMIZED 3 ELEMENT 15 METERS (21 MHz) MONOBAND YAGI BEAM ANTENNA 

Hy-Gain Long John Yagi Antennas are computer-optimized HF beams. They feature full-sized elements, wide spaced, on a long boom. They also feature Hy-Gain's adjustable beta-match, rugged boom-to mast bracket, and stainless steel hardware and clamps for all electrical and mechanical connections.

These beams are ideal for contesting and DXing. Their excellent gain and front to back ratio means better resistance to QRM and better RST on the desired signal. Long Johns are ideal for stacking! Use two or three of them for unparalleled performance and durability.

Many hams prefer mono-band antennas for their no-compromise performance.

SIRIO - SY-3 - 3 ELEMENTI YAGI TYPE BEAM ANTENNA - TUNABLE FROM 26.5 TO 30 MHz - BOOM LENGHT: m 2.71 (8.89 ft)
 

SIRIO - SY-4 - 4 ELEMENTI YAGI TYPE BEAM ANTENNA - TUNABLE FROM 26.5 TO 30 MHz - BOOM LENGHT: m 4.03 (13.22 ft)
 

PROSISTEL - PST-1524TV - TRAPPED MULTI-BAND DIPOLE FOR 10-15-20-40 METERS IN A "V" CONFIGURATION

Very robust construction, with stainless steel hardware.
The traps are made with high insulation copper wire wound on fiberglass supports, and allow use of powers up to 2 kW p.e.p. SSB.

TECHNICAL FEATURES:

APPLICABLE POWER: 2 kW p.e.p.

Arms length: 6 m, projection on the ground 4 m per arm

Standard mounting on masts from 40 to 50 mm, or 60 mm optional

Suggested ground clearance at least 5 m, but works well even at 2 m

The antenna does not require guying

Weight: 8 kg

Balun: Optional - See List of antenna accessories

6 METERS (50 MHz) KIT: optional - - See List of antenna accessories  (PLEASE NOTE:
THE BALUN TO BE USED ON THE "V" ANTENNA WITH THIS EXPANSION KIT MUST REACH 50 MHz.
THE PST-1,5KY MODEL IS COMPATIBLE).

PROSISTEL - PST-152TV - TRAPPED MULTI-BAND DIPOLE FOR 10-15-20 METERS IN A "V" CONFIGURATION 

Very robust construction, with stainless steel hardware.
The traps are made with high insulation copper wire wound on fiberglass supports, and allow use of powers up to 2 kW p.e.p. SSB.

TECHNICAL FEATURES:

APPLICABLE POWER: 2 kW p.e.p.

Arms length: 4 m, projection on the ground 3 m per arm

Standard mounting on masts from 40 to 50 mm, or 60 mm optional

Suggested ground clearance at least 5 m, but works well even at 2 m

The antenna does not require guying

Weight: 7 kg

Balun: Optional, 1:1 RATIO REQUIRED - See List of antenna accessories

6 METERS (50 MHz) KIT: optional - - See List of antenna accessories (PLEASE NOTE:
THE BALUN TO BE USED ON THE "V" ANTENNA WITH THIS EXPANSION KIT MUST REACH 50 MHz.
THE PST-1,5KY MODEL IS COMPATIBLE).