The 4:1 Balun/Holder UBAA 9114 can accept both, biconical and open cone elements. The low loss balun offers better antenna factors and a good symmetry, especially at lower frequencies.
The 4:1 Balun/Holder UBAA 9115 can accept both biconical and open cone elements. The balun was especially designed to achieve an extremely high degree of symmetry, which is very important at lower frequencies.
The high power balun VHBD 9134-10 was designed for immunity tests in the frequency range from 20 MHz to 280 MHz. The symmetrical terminals can accept several types of radiating elements with 10 mm shaft. A transformation ratio for impedances of 4:1 and an extremely low-loss design allows the generation of highest field strengths in the VHF range.
High Power Guanella Balun 4:1 on PTFE body with 10 mm element fixtures.
High Power Guanella Balun 4:1 on PTFE body with 10 mm element fixtures and high performance 7/16 female coaxial connector.
The VHBB 9124 Balun provides an extraordinary degree of symmetry (common mode rejection), especially at the low frequency end (20 to 40 MHz), where otherwise lack of symmetry with cable braid current may cause severe error.
Low Loss Broadband Balun 4:1 with female N-Connector for receive and transmit applications in the VHF frequency range. The main application of the NMHC 4 MM is the immunity test against handheld transmitters according to ISO 11452-9 (Annex C.5) in the frequency range between 20 MHz and 220 MHz with the flat elements 419 NJ.
High Power Guanella Balun 4:1 on PTFE body with 10 mm element fixtures.
The antenna holder / balun VHBA 9123 with low loss transmission line transformer are primarily designed for the use with biconical elements such as BBA 9106 or BBAL 9136. It may also be used with rod elements as a dipole with improved bandwidth or collapsible biconical elements like FBAB 9177 or FBAL 9178.