TCI_524_527_527B_broch.pdf

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1、Maximize gain and bandwidth with an exceptionally small structure. Highly reliable communications on long-range circuits require antennas with high power gain at low take-off angles. In addition, ionospheric variations resulting in frequent changes in frequency make a wide frequency bandwidth desira

2、ble. The conventional approach to achieve wide-band, highly directive antennas has been to use multiple rhombic antennas, which rely heavily on end-fi re gain to achieve their directivity and hence are quite large. Typical installations exceed 300 meters in length and require large investments in la

3、nd. Log-periodic antennas have long been desired for their wide band characteristics, effi cient land use, and modest price. Until recently, increasing the gain of a log periodic has been attempted through end-fire techniques. This approach results in very large structures, which are diffi cult to s

4、upport and install. Small structures with very high gain are now possible using techniques developed at TCI employing broadside gain. Use of the clamped mode technique physically increases the width of the radiating aperture, resulting in larger broadside gain. The width of the active region of the

5、Model 524 and 527/527B is 1.5 wavelengths. Individual radiators resemble a saw-tooth and are the electrical equivalent of “fattened” radiators with low Q. The reduction in Q increases the power handling capability and lengthens the effective active region, resulting in greater radiation effi ciency.

6、 524/527/527B Super High Gain Log-Periodic Antennas KEY FEATURES Reliable communications on long- range circuits High power gain over 18 dBi Wide frequency bandwidth 4 to 30 MHz Small land area replaces rhombic twice the size Low take-off angle 524/527/527B System Details 05101520 30 o 20 o 10 o 0 o

7、 10 o 20 o 30 o 4 MHz 05101520 30 o 20 o 10 o 0 o 10 o 20 o 30 o 15 MHz 05101520 30 o 20 o 10 o 0 o 10 o 20 o 30 o 25 MHz 5 0 5 10 15 20 30 o 20 o 10 o 0 o 4 MHz 5 0 5 10 15 20 30 o 20 o 10 o 0 o 15 MHz 5 0 5 10 15 20 30 o 20 o 10 o 0 o 25 MHz Model 524 Antenna Azimuth and Elevation Patterns (Azimut

8、h pattern at elevation angle of beam maximum, gain in dBi) NOTE: Front support poles, normally class 2, 3, or 4 Douglas Fir, are required but not supplied by TCI. Check with TCI for specific requirements. 05101520 30 o 20 o 10 o 0 o 10 o 20 o 30 o 4 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 6.2 MHz 05

9、101520 30o 20o 10o 0o 10o 20o 30o 8 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 12 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 25 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 22 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 16 MHz 5 0 5 10 15 20 30 o 20 o 10 o 0 o 4 MHz 5 0 5 10 15 20 30o 20o 10o 0o 6.2 MHz 5 0 5 10 1

10、5 20 30o 20o 10o 0o 8 MHz 5 0 5 10 15 20 30o 20o 10o 0o 12 MHz 5 0 5 10 15 20 30o 20o 10o 0o 25 MHz 5 0 5 10 15 20 30o 20o 10o 0o 22 MHz 5 0 5 10 15 20 30o 20o 10o 0o 16 MHz Model 527B Antenna Azimuth and Elevation Patterns (Azimuth pattern at elevation angle of beam maximum, gain in dBi) NOTE: Fron

11、t support poles, normally class 2, 3, or 4 Douglas Fir, are required but not supplied by TCI. Check with TCI for specific requirements. 2 System Details 524/527/527B Model 524 Antenna The Model 524 is a single-curtain antenna three half-wavelengths wide, resulting in a dramatic increase in the broad

12、side radiating aperture. The antenna gain is 15.5 dBi minimum, 16 dBi nominal and the azimuth beamwidth is 38. On a long point- to-point circuit where wide azimuth coverage is not required, this antenna provides reliable communications with a single antenna curtain. 05101520 30o 20o 10o 0o 10o 20o 3

13、0o fo 05101520 30o 20o 10o 0o 10o 20o 30o 8 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 12 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 25 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 22 MHz 05101520 30o 20o 10o 0o 10o 20o 30o 16 MHz 5 0 5 10 15 20 30o 20o 10o 0o fo 5 0 5 10 15 20 30o 20o 10o 0o 8 MHz 5 0 5 10 15

14、 20 30o 20o 10o 0o 12 MHz 5 0 5 10 15 20 30o 20o 10o 0o 25 MHz 5 0 5 10 15 20 30o 20o 10o 0o 22 MHz 5 0 5 10 15 20 30o 20o 10o 0o 16 MHz Model 527 Antenna Azimuth and Elevation Patterns (Azimuth pattern at elevation angle of beam maximum, gain in dBi) Model 527B Antenna The 527B consists of two stan

15、dard transposed dipole arrays, which are horizontally polarized and stacked in the vertical plane. The increase in vertical aperture decreases the H-plane beamwidth, resulting in antenna gain of 15 dBi while retaining an azimuth beamwidth of 64. This antenna is extremely useful in applications where

16、 high gain, low take-off angles are required over a broad azimuth. Model 527 Antenna The 527 consists of two 524 curtains stacked vertically. On long-range, point-to-point circuits, where extremely high power gain and low take- off angle are required, the 527 will provide highly reliable communicati

17、ons. Performance will exceed that of a rhombic more than twice the size. The 527 provides antenna gain in excess of 18 dBi and a take-off angle of 12. 3 524/527/527B System Details Model 524 Specifi cations PolarizationHorizontal VSWR2.0:1 maximum Azimuth Beamwidth38 nominal Front-to-Back Ratio & Si

18、de Lobe Level 13 dB nominal Environmental Performance Designed in accordance with EIA Specifi cation RS-222C for loading of 225 km/h (140 mi/h) wind, no ice, 145 km/h (90 mi/h) wind, 12 mm (1/2”) radial ice Optional: 160 km/h (100 mi/h) wind only, no ice Size Model NumberFrequency Range HeightLength

19、*Width* ft.mft.mft.m 524-3-N430 MHz14142.9406123.8597182.5 524-6-N530 MHz12136.8358109514157 524-4-N6.230 MHz10130.828586.9395120.4 * Measured from extreme guy points Gain and Pattern Data FrequencyGainLHPPTOAUHPP fo15.5 dBi152742 15 MHz16.0 dBi91929 21 MHz16.5 dBi91727 25 MHz16.5 dBi81524 30 MHz16.

20、5 dBi81423 Power and Impedance Data Model NumberInput ImpedancePower (Avg./PEP)Connector 524-N-0250 ohmReceiveType N Female 524-N-0350 ohm10/50 kW1-5/8” EIA Female 524-N-0650 ohm1/2 kWType N Female The Model 524 is a single curtain antenna utilizing the clamped mode fattened radiator design. The ant

21、enna is three half wavelengths wide resulting in a dramatic increase in the broadside radiating aperture. The antenna gain is 15.5 dBi minimum, 16 dBi nominal and the azimuth beamwidth is 38. On a long point-to-point circuit where wide azimuth coverage is not required this antenna provides reliable

22、communications with a single antenna curtain. Horizontal Polarization It is well known that vertically polarized antennas experience undesirable ground losses without the use of sizable ground screens. Because the TCI super high gain antennas are horizontally polarized, ground losses are negligible

23、and the maximum possible antenna gain is actually achieved without ground screens. Durable Materials All TCI antennas share the same high-quality, exhaustively tested components and materials. All radiators, feedlines, and catenaries are Alumoweld, a wire composed of a high-strength steel core and a

24、 highly conductive, corrosion- resistant, welded coating of aluminum. All feedline and radiator tip insulators are made of high-strength glazed alumina, a material with an extremely low loss tangent (.001), which is virtually impervious to the effects of ultraviolet radiation, dirt, and salt spray.

25、Fixed-station log-periodic antennas traditionally have used fiberglass catenary and drop rod assemblies for their excellent dielectric and tensile strength properties. However, field experience has shown that minute, diffi cult-to- detect fl aws in the material, RF burning and small nicks incurred d

26、uring installation may result in catastrophic structural failure later on. This, along with deterioration when stored for long periods of time at high temperature and humidity, indicate an opportunity for improvement. As a result, TCI antennas use Alumoweld catenaries, broken up by fail-safe insulat

27、ors, which are not subject to the failure modes experienced by fi berglass. The TCI towers employ either 6061-T6 aluminum or galvanized steel. All bolts and nuts are of the same material as the tower, thereby eliminating all dissimilar metal contacts. 4 Summary Specifi cations 524/527/527B Model 527

28、B Specifi cations PolarizationHorizontal VSWR2.0:1 maximum Azimuth Beamwidth64 nominal Front-to-Back Ratio & Side Lobe Level 13 dB nominal Environmental Performance Designed in accordance with EIA Specifi cation RS-222C for loading of 225 km/h (140 mi/h) wind, no ice, 145 km/h (90 mi/h) wind, 12 mm

29、(1/2”) radial ice Optional: 160 km/h (100 mi/h) wind only, no ice Size Model NumberFrequency Range HeightLength*Width* ft.mft.mft.m 527B-2-N430 MHz22067.2487148.4600183 527B-8-N6.230 MHz15146330101410125 * Measured from extreme guy points Gain and Pattern Data FrequencyGainLHPPTOAUHPP 4.0 MHz14.5 dB

30、ii112235 6.2 MHz14.7 dBi102034 12.0 MHz15.0 dBi81726 25.0 MHz15.2 dBi61421 30.0 MHz15.2 dBi61320 Power and Impedance Data Model NumberInput ImpedancePower (Avg /PEP)Connector 527B-N-0250 ohmReceiveType N Female 527B-N-0350 ohm10/50 kW1-5/8” EIA Female 527B-N-0650 ohm1/2 kWType N Female The Model 527

31、B antenna consists of two standard transposed dipole arrays which are horizontally polarized and stacked in the vertical plane. The increase in ver tical aperture decreases the H-plane beamwidth resulting in antenna gain of 15 dBi while retaining an azimuth beamwidth of 64. This antenna is extremely

32、 useful in applications where high gain, low take-off angles are required over a broad azimuth. 5 Company proprietary Data and specifi cations subject to change without notifi cation. Not for distribution without prior permission from TCI. 524/527/527B-11-11-15 2014-2016 All Rights Reserved TCI INTE

33、RNATIONAL, INC. 3541 Gateway Blvd. Fremont, CA 94538-6585 USA TEL: 1-510-687-6100 USA: 1-800-824-8074 FAX: 1-510-687-6101 524/527/527B Summary Specifi cations Model 527 Specifi cations PolarizationHorizontal VSWR2.0:1 maximum Azimuth Beamwidth38 nominal Front-to-Back Ratio & Side Lobe Level 13 dB no

34、minal Environmental Performance Designed in accordance with EIA Specifi cation RS-222C for loading of 225 km/h (140 mi/h) wind, no ice, 145 km/h (90 mi/h) wind, 12 mm (1/2”) radial ice Optional: 160 km/h (100 mi/h) wind only, no ice Size Model NumberFrequency Range HeightLength*Width* ft.mft.mft.m 5

35、27-2-N430 MHz22167.5598182.2781238.1 527-3-N6.230 MHz17051.8388118.3545166 527-6-N5.9526.1 MHz18456442135610183 * Measured from extreme guy points Gain and Pattern Data FrequencyGainLHPPTOAUHPP fo16.5 dBi102033 12 MHz17.5 dBi91828 25 MHz18.2 dBi61320 30 MHz18.2 dBi61219 Power and Impedance Data Mode

36、l NumberInput ImpedancePower (Avg. PEP)Connector 527-N-0250 ohmReceiveType N Female 527-N-0650 ohm1/2 kWType N Female 527-N-2850 ohm5/10 kW7/8” EIA Female 527-2-100300 ohm Balanced 100kW AM (150kW Avg/400 kW Peak) Balanced Terminals 527-6-100300 ohm Balanced 100kW AM (150kW Avg/400 kW Peak) Balanced

37、 Terminals 527-6-250300 ohm Balanced 250kW AM (375kW Avg/1,000 kW Peak) Balanced Terminals The Model 527 consists of two 524 curtains stacked vertically. On long range point-to-point circuits where extremely high power gain and low take-off angle are required, the 527 will provide highly reliable communications. Per formance will exceed that of a rhombic more than twice the size. The 527 provides antenna gain in excess of 18 dBi and at a take-off angle of 12.