UBAA 9114 – 4:1 VHF-UHF Broadband Balun

The 4:1 Balun/Holder UBAA 9114 can accept both, biconical elements (e.g. BBVU 9135 or BBUK 9139) and open cone elements (e.g. BAOC 9216 and BBOC 9217). The low loss balun offers better antenna factors and a good symmetry, especially at lower frequencies. The wide bandwidth and the fixed center of radiation help to make convenient measurements without antenna changes. Thanks to the small size UBAA 9114 can be used as a passive field sensor. Highest degree of symmetry (with slightly increased losses) can be achieved with the balun/holder UBAA 9115. The dimensions and element fixtures of both baluns are identical in order to accept the same elements.

Application:
The low loss balun UBAA 9114 is most often used with the compact biconical elements BBVU 9135 or BBUK 9139. The biconical antenna is especially valuable for convenient broad band evaluations of anechoic chambers or open area test sites. In combination with the battery driven spectrum generator SG 9301 a portable reference radiator is available, which can also be used for test site assessments.

Frequency Range (nominal):	30 – 1000 MHz
Frequency Range (useable):	25 – 1200 MHz
Return loss f > 250 MHz	typ. 4 dB
Ret. loss f > 250 MHz, 3 dB pad	typ. 10 dB ~ SWR 2
Antenna Factor (depending on elem. type in use):	18 – 38 dB/m
Length holder:	LH=540 mm
Antenna shaft (Tube):	⌀ 22 mm
Total weight:	0.83 kg
Power (EMC TX):	5 W
Coaxial Connector:	N – female

Datasheet UBAA 9114