Sigma Eurocomms

AMPRO-11 Metre 27 - 28MHz HF MOBILE ANTENNA

This product data sheet is originally written in English.


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Sigma Euro-Comm Limited
Proudly family-run since 1990, Sigma Euro-Comm is a UK-based manufacturer specialising in high-performance CB antennas. With over three decades of hands-on experience, we design, engineer, and build every antenna at our dedicated factory in the heart of Birmingham. Our commitment to quality, precision, and customer satisfaction has earned us a trusted reputation across the industry. At Sigma, we don't just make antennas - we craft reliable communication tools built to perform, built to last. When you choose Sigma, you're not just buying a product. You're investing in British-made quality, decades of expertise, and the kind of personal service only a family business can deliver
AMPRO-11 Metre 27 - 28MHz HF MOBILE ANTENNA
Trusted Seller
Free UK Delivery - On selected Products
Over 30 Years Experience - est 1990
Description



Sigma AM-PRO 10 Meter HF Antenna

Specifications

    Power handling 250 watts

    Length  2.40m (Approx)

    Impedance 50 Ohms

    Frequency 27-28 MHz

    SWR 1.5:1

    Whip 17.7 ph stainless

    Fitting 3/8 UNF

    Made in Great Britain

The Sigma Euro-Comm AM PRO HF Antenna Range are High Quality, Heavy Duty, Slimline Construction Antennas for the purpose of HF Amateur Radio Bands. There are 11 models in our range, starting from 4m, right up to 80m. They are designed to operate on the phone portion of the Band, Bandwidth and VSWR. The VSWR may vary according to the mounting location. VSWR at resonance should be 1.5:1 or less when properly matched. The Whip is Field Tunable for lowest VSWR Double Locked with Stainless Steel grub screws. If you require a greater bandwidth, an ATU may be required. Heavy gauge Copper wire is used in the construction of the resonator, and is wound onto a fibreglass mast, and finished in Sleek Black. The fittings are of Brass construction and the 1.2m (4ft) long Stainless Steel Whip that fits into the resonator ensures that the Antenna works extremely well.



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AMPRO-11 Metre 27 - 28MHz HF MOBILE ANTENNA



Sigma AM-PRO 10 Meter HF Antenna

Specifications

    Power handling 250 watts

    Length  2.40m (Approx)

    Impedance 50 Ohms

    Frequency 27-28 MHz

    SWR 1.5:1

    Whip 17.7 ph stainless

    Fitting 3/8 UNF

    Made in Great Britain

The Sigma Euro-Comm AM PRO HF Antenna Range are High Quality, Heavy Duty, Slimline Construction Antennas for the purpose of HF Amateur Radio Bands. There are 11 models in our range, starting from 4m, right up to 80m. They are designed to operate on the phone portion of the Band, Bandwidth and VSWR. The VSWR may vary according to the mounting location. VSWR at resonance should be 1.5:1 or less when properly matched. The Whip is Field Tunable for lowest VSWR Double Locked with Stainless Steel grub screws. If you require a greater bandwidth, an ATU may be required. Heavy gauge Copper wire is used in the construction of the resonator, and is wound onto a fibreglass mast, and finished in Sleek Black. The fittings are of Brass construction and the 1.2m (4ft) long Stainless Steel Whip that fits into the resonator ensures that the Antenna works extremely well.



Built By
The Sigma Euro-Comm AM PRO HF Antenna Range are High Quality, Heavy Duty, Slimline Construction Antennas for the purpose of HF Amateur Radio Bands. There are 11 models in our range, starting from 4m, right up to 80m. They are designed to operate on the phone portion of the Band, Bandwidth and VSWR. The VSWR may vary according to the mounting location. VSWR at resonance should be 1.5:1 or less when properly matched. The Whip is Field Tunable for lowest VSWR Double Locked with Stainless Steel grub screws. If you require a greater bandwidth, an ATU may be required. Heavy gauge Copper wire is used in the construction of the resonator, and is wound onto a fibreglass mast, and finished in Sleek Black. The fittings are of Brass construction and the 1.2m (4ft) long Stainless Steel Whip that fits i