HFBA 9122 – 1:1 HF-VHF Broadband Balun / Holder
The 1:1 Balun/Holder HFBA 9122 was originally designed as passive field probe to measure very high fieldstrength at low frequencies from 100 kHz up. Depending on the element type in use the HFBA 9122 can be used up to 500 MHz. The charcteristics of HFBA 9122 in the VHF range are comparable to common biconical antennas. The HFBA 9122 balun accepts several biconical element sizes, e.g. BBVU 9135 or BBUK 9139, which allows an antenna factor shift to the desired application. In general the antenna factor rises (reduction of sensitivity) with smaller elements.
| Frequency Range, nominal: | 0.15 – 300 MHz |
| Frequency Range, usable: | 0.1 – 500 MHz |
| Antenna Factor: (depending on elem. type in use and frequency range) | ca. 95-15 dB/m |
| Fieldstrength Measuring Range: (depending on elem. type in use and frequency range) | ca. 30-190 dBµV/m; ca. 30µV/m – 3 kV/m |
| Length holder (LH): | 540 mm |
| Antenna shaft (Tube): | 22 mm |
| Total weight: | 1.3 kg |
| Power (EMC TX): | 10 W |
| Coaxial Connector: | N – female |
Frequency Chart: HFBA 9122, 1:1 with different antenna elements
Overview Table: HFBA 9122, 1:1 with different antenna elements
| Antenna Element | D [m] | Le [m] | Frequency Range [MHz] | Antenna Factor [dB/m] | Isotropic Gain [dBi] | Operation Mode | Pmax [W] | Lh [m] | Connector | Datasheet |
|---|---|---|---|---|---|---|---|---|---|---|
| BBA 9106 (biconical) | 0.52 | 1.32 | 20 – 300 | 7 – 22 | -22 – 0 | RX | 10 | 0.54 | N | Datasheet |
| BBAL 9136 (biconical) | 0.57 | 1.94 | 20 – 220 | 5 – 21 | -17 – -3 | RX | 10 | 0.54 | N | Datasheet |
| BBAK 9137 (biconical) | 0.35 | 0.92 | 20 – 320 | 10 – 24 | -27 – 0 | RX | 10 | 0.54 | N | Datasheet |
| BBVK 9138 (biconical) | 0.26 | 0.72 | 20 – 320 | 13 – 28 | -31 – 0 | RX | 10 | 0.54 | N | Datasheet |
| BBVU 9135 (biconical) | 0.19 | 0.49 | 0.1 – 500 | 15 – 39 | -42 – 1 | RX | 10 | 0.54 | N | Datasheet |
| BBUK 9139 (biconical) | 0.13 | 0.38 | 0.1 – 500 | 15 – 46 | -48 – 1 | — | 10 | 0.54 | N | Datasheet |
Dimensions labeled:
- LH: The length of the antenna holder element.
- LE: The length of both conical element and balun (width)
- D: The diameter of the widest part of the conical elements.
