Overview

MOMOBEAM TRI7 10/15/20 Antenna

The MOMOBEAM TRI7 10/15/20 is a compact-size and affordable tri-band yagi antenna. It covers the 10/15/20 meter bands with amazing performance using just one coaxial cable. On 15 and 20 meters, it uses a reflector/driver configuration with full-size components, providing higher performance than older generation antennas. On 10 meters, it features 3 elements with a reflector, driver, and director configuration. The spacings have been optimized using the latest simulation software for maximum performance.

The TRI7 is simple to assemble and does not require any calibration. It features flat SWR below 1.5:1 on all operating bands, making it a perfect fit for modern transceivers and linear amplifiers.

Requirements

Requires only one coaxial cable
Requires a medium/light-range rotor

Specifications

Band	Gain dBi	Gain dBd free space	Front-to-Back Ratio (F/B)	Active Elements	Bandwidth KHz (S.W.R. ≤ 1.5:1)	Boom Length	Turning Radius	Feed Lines Required	Max Tower Lift Side	Longest Element
10 m	13.8	6.1	18	3	800	420 cm/13.75 ft	600 cm/19.68 ft	1 X 50 Ohm	130 cm/4.26 ft	1111 cm/36.45 ft
15 m	12.0	4.3	15	2	450
20 m	11.5	4.2	15	2	350

Additional Information

Power Handling: 10 kW
Wind Area: 0.68 m²/7.30 sq ft
Wind Load at 130 Km/h: 565 N
Wind Survival*: 160 Kmh – 100 Mph
Tower Leg/Mast Diameter: 50/60 mm – 2/2.36 inch (larger on request – specify on order form)
RF Choke**: 3 KW included
Weight (excluding packaging): 27 Kg/59 lb

Materials Used

Tubes and plates: Aluminum alloy 6060T6
Hardware: Stainless steel
Insulating clamps: Polypropylene UV resistant
Manual: English

*Wind survival is the maximum wind speed to which the antenna can be subjected without incurring permanent deformation (calculated in the absence of ice)

RF Choke Details

The Momobeam RF Choke (standard product offering, rated at 3 KW) is made from high-quality Teflon dielectric, double-shielded, low-loss coaxial cable with properly selected ferrite material that is sleeved over the cable that together, create a high impedance path for RF, providing high isolation between the antenna and coaxial feedline.

An SO-239 female connector is included for convenient attachment to the customer feedline and its PL-259 Male connector.

The 5 KW and 10 KW rated RF chokes (optional purchase) are made from the same materials except the coaxial cable is 10 mm in diameter.

The 10KW version uses a 7/16 DIN style connector.

Manual

Product Information

MOMOBEAM TRI7 10/15/20 Antenna

The MOMOBEAM TRI7 10/15/20 is a compact-size and affordable tri-band yagi antenna. It covers the 10/15/20 meter bands with amazing performance using just one coaxial cable. On 15 and 20 meters, it uses a reflector/driver configuration with full-size components, providing higher performance than older generation antennas. On 10 meters, it features 3 elements with a reflector, driver, and director configuration. The spacings have been optimized using the latest simulation software for maximum performance.

The TRI7 is simple to assemble and does not require any calibration. It features flat SWR below 1.5:1 on all operating bands, making it a perfect fit for modern transceivers and linear amplifiers.

Requirements

Requires only one coaxial cable
Requires a medium/light-range rotor

Specifications

Band	Gain dBi	Gain dBd free space	Front-to-Back Ratio (F/B)	Active Elements	Bandwidth KHz (S.W.R. ≤ 1.5:1)	Boom Length	Turning Radius	Feed Lines Required	Max Tower Lift Side	Longest Element
10 m	13.8	6.1	18	3	800	420 cm/13.75 ft	600 cm/19.68 ft	1 X 50 Ohm	130 cm/4.26 ft	1111 cm/36.45 ft
15 m	12.0	4.3	15	2	450
20 m	11.5	4.2	15	2	350

Additional Information

Power Handling: 10 kW
Wind Area: 0.68 m²/7.30 sq ft
Wind Load at 130 Km/h: 565 N
Wind Survival*: 160 Kmh – 100 Mph
Tower Leg/Mast Diameter: 50/60 mm – 2/2.36 inch (larger on request – specify on order form)
RF Choke**: 3 KW included
Weight (excluding packaging): 27 Kg/59 lb

Materials Used

Tubes and plates: Aluminum alloy 6060T6
Hardware: Stainless steel
Insulating clamps: Polypropylene UV resistant
Manual: English

*Wind survival is the maximum wind speed to which the antenna can be subjected without incurring permanent deformation (calculated in the absence of ice)

RF Choke Details

The Momobeam RF Choke (standard product offering, rated at 3 KW) is made from high-quality Teflon dielectric, double-shielded, low-loss coaxial cable with properly selected ferrite material that is sleeved over the cable that together, create a high impedance path for RF, providing high isolation between the antenna and coaxial feedline.

An SO-239 female connector is included for convenient attachment to the customer feedline and its PL-259 Male connector.

The 5 KW and 10 KW rated RF chokes (optional purchase) are made from the same materials except the coaxial cable is 10 mm in diameter.

The 10KW version uses a 7/16 DIN style connector.

Manual

Shipping And Returns

Shipping:

We have several shipping options for our products, including next-day and Saturday/Sunday delivery for certain items. Please see these options at checkout.

Returns:

If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:

Click here for returns form

Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.

Warranty Terms and Conditions

Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.

For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.

International Warranty information

Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]