Tekbox TBMA3 250MHz to 1.3GHz LOG Periodic Measurement Antenna

£1250.00 (£1500.00 inc VAT)

3 in stock (can be backordered)

Availability: Stock models delivered next working day (UK only) for orders placed before 15:00 (Mon - Fri)

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Description


Tekbox TBMA3 Antenna

The Tekbox TBMA3 is an affordable logarithmic periodic measurement antenna, targeting radiated noise EMC pre-compliance testing.

The TBMA3 is characterised from 250MHz to 1.3GHz and has VSWR and antenna factor values typical for log-periodic measurement antennas.

CISPR 16 divides the frequency range into several bands and defines specific antennas for each of these bands. For the frequency range above 300 MHz up to 1 GHz, CISPR 16 specifies using logarithmic periodic antennas (log-periodic antennas ) for radiated noise measurements.

The TBMA3 is an average sized log-periodic antenna, with its radiating elements and supporting booms made from powder coated aluminium alloy. It is equipped with a standard female N-connector and comes together with an antenna bracket and a mounting adapter. A standard ¼” thread on the bottom of the mounting adapter makes it easy to connect it to most standard tripods.

Features:

  • Type: logarithmic periodic
  • Frequency range: 250 MHz– 1300 MHz
  • Nominal impedance: 50 Ω
  • Connector: N type female
  • Maximum continuous input RF power: 100 W
  • Isotropic gain: 6 dBi ± 1.5 dB
  • Antenna factor: 14.2 … 27.5 dB/m
  • Voltage Standing Wave Ratio (VSWR): < 1.95:1 over the entire
  • frequency range ; 1.35:1 average
  • Width: 749 mm (29.49”)
  • Height (With the mounting adapter): 170.23 mm (6.70”)
  • Height (Without the mounting adapter): 79.5 mm (3.13”)
  • Depth: 863 mm (33.98”)
  • Weight: 1.78 kg (3.92 lbs)
  • Tripod Adapter Thread Size: ¼”

Documentation


User Manual

Tekbox TBMA3 User Manual

 

Specifications
Type logarithmic periodic
Frequency range 250 MHz– 1300 MHz
Nominal impedance 50 Ω
Connector N type female
Maximum continuous input RF power 100 W
Isotropic gain 6 dBi ± 1.5 dB
Antenna factor 14.2 … 27.5 dB/m
Voltage Standing Wave Ratio (VSWR) < 1.95:1 over the entire
frequency range 1.35:1 average
Width 749 mm (29.49”)
Height (With the mounting adapter) 170.23 mm (6.70”)
Height (Without the mounting adapter) 79.5 mm (3.13”)
Depth 863 mm (33.98”)
Weight 1.78 kg (3.92 lbs)
Tripod Adapter Thread Size ¼”

 

Frequency (MHz) Wavelength (M) Gain (Isotropic) (dBi) Gain (Dipole) (dBd) Antenna Factor (dB/m)
250 1.20 0.41 -1.74 17.77
255 1.18 2.62 0.47 15.74
260 1.15 4.18 2.03 14.34
265 1.13 4.46 2.31 14.23
270 1.11 4.58 2.43 14.27
275 1.09 4.70 2.55 14.31
280 1.07 4.79 2.64 14.37
285 1.05 4.10 1.95 15.22
290 1.03 4.81 2.66 14.66
295 1.02 5.25 3.10 14.37
300 1.00 5.32 3.17 14.44
310 0.97 5.35 3.20 14.70
320 0.94 5.65 3.50 14.67
325 0.92 5.79 3.64 14.67
330 0.91 5.90 3.75 14.69
340 0.88 6.02 3.87 14.83
350 0.86 5.96 3.81 15.14
360 0.83 5.98 3.83 15.37
370 0.81 6.02 3.87 15.56
375 0.80 5.96 3.81 15.75
380 0.79 5.99 3.84 15.83
390 0.77 6.04 3.89 16.00
400 0.75 6.02 3.87 16.24
425 0.71 5.40 3.25 17.39
435 0.69 4.15 2.00 18.84
450 0.67 6.07 3.92 17.21
475 0.63 6.30 4.15 17.46
500 0.60 6.14 3.99 18.06
520 0.58 6.02 3.87 18.52
550 0.55 6.42 4.27 18.61
580 0.52 6.73 4.58 18.76
600 0.50 6.73 4.58 19.05
620 0.48 6.75 4.60 19.32
650 0.46 6.74 4.59 19.74
680 0.44 6.24 4.09 20.63
700 0.43 6.54 4.39 20.58
750 0.40 6.58 4.43 21.14
800 0.38 6.59 4.44 21.69
850 0.35 6.69 4.54 22.12
900 0.33 6.32 4.17 22.98
950 0.32 6.13 3.98 23.64
1000 0.30 6.36 4.21 23.86
1050 0.29 5.98 3.83 24.66
1100 0.27 5.49 3.34 25.56
1150 0.26 5.14 2.99 26.29
1200 0.25 4.37 2.22 27.43
1300 0.23 4.96 2.81 27.54

 

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