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Amplifiers
 

 
No.NameCode
1
Multi-band Amplifier: AWS-1034 (FM/VHF/UHF-UHF)
This broadband amplifier (gain adjustment for FM, BIII, and VHF/UHF bands) with additional UHF input has been designed for use in one-family homes and other small antenna systems. ... more »
B11586
2
Antenna Preamplifier: LNA-177 (box-mounted, shielded, 30dB)
The preamplifier has been designed for placing in antenna box. Input impedance: 300 ohm (balanced); output impedance: 75 ohm. ... more »
B4009
3
Indoor antenna amplifier: AWS-1036 SilverLine (1 input, 4 adjustable outputs)
Broadband RF amplifier AWS-1036 has been designed for applications in individual and community antenna systems. The device has one input, and four outputs with independent level controls.... more »
B11587
4
Stabilized Power Supply (230VAC/12VDC, 250mA, jack tip +)
Power supply used with RF/DC separators AZS-03 ... more »
D0356
5
Multi-band Amplifier: AWS-1035 (FM-VHF/UHF-UHF)
This multi-band amplifier has been designed for use in one-family homes and other small antenna systems. ... more »
B11589
6
R90102
7
Antenna Amplifier ALCAD CA-313 (5 band inputs)
The CA-313 amplifier is used to amplify and distribute TV and FM radio signals. It is a brand-name device designed for use in small and medium-size community installations (MATV systems). CA-313 is equipped with five band inputs, which make it a very useful amplifier for applying several antennas receiving signals from different directions. The employed in this model input partition enables better equalization of signal levels.... more »
R904058
8
Building Antenna Amplifier CF-716 (SAT IF/TV/FM/Return - ALCAD 904 series)
The CF-716 amplifier is used to amplify and distribute satellite and terrestrial TV, and FM radio signals. This model is a special one, designed for the use in medium and large community installations working within 86 - 862 MHz band as well as and in the first intermediate satellite frequency band 950 - 2150 MHz. It has one wideband input. Gain adjustment, and cable's characteristic correction have been anticipated (the last - within terrestrial TV band; for sat. IF - fixed at 6 dB ). The amplifier is equipped with test outputs both for input and output. ... more »
R90443
9
RF Distribution Amplifier: Alcad CF-115
Building amplifier from Alcad, used in community / cable TV systems. It compensates attenuation of the distribution network and enables equalization of cale characteristics. The amplifier has been also equipped with 10dB amplifier in the return channel, so it can be employed in multimedia cable networks. ... more »
R90446
11
Broadband Amplifier: Alcad AI-200
AI-200 Amplifier is used as distributing device in small or private antenna installations, to ensure proper level of signal for multiple receivers. The amplifier works in 40 - 318 MHz and 470 - 862 MHz bands. Thanks to separate gain adjustment for VHF and UHF bands, the levels of signals can be equalized. This makes it easier to build installations using a single cable to distribute signals from several antennas (combined in a diplexer etc).... more »
R90450
12
Broadband Amplifier with Return Channel: Alcad AI-223
Amplifier AI-223 is used as distributing device in small or private antenna installations, to ensure proper level of signal for multiple receivers. The amplifier works in full FM + TV band 86 - 862 MHz. As there are no empty spaces in the working band, the amplifier can be used in any cable network. It can also be used to distribute signals in group/community installations. Gain adjustment allows for adequate correction of signal loss in cabling.... more »
R90452
13
Broadband Antenna Amplifier: Alcad CA-210 (24 VDC for preamp.)
CA-210 Amplifier is used as distributing device in small or private antenna installations, to ensure proper level of signal for multiple receivers. The amplifier works in 40 - 400 MHz and 470 - 862 MHz bands. Thanks to separate gain adjustment for VHF and UHF band, amplifying level can be set to fit the signal level best for each. This makes installations using a single cable to send signals from all the antennas easier to set properly. ... more »
R90460
14
4-input Antenna Amplifier CA-312 (built-in power supply, ALCAD 904 series)
The CA-312 amplifier is used to amplify and distribute TV and FM radio signals. It is a brand-name device designed for the use in small and medium size community installations. The CA-312 is equipped with four band inputs and two outputs. This model fills up the gap among CA-210, CA-215, AI-200 and CF-512 amplifiers. The amplifier is fed from its internal stabilized power supply, which is powered directly from the mains.... more »
R904039
15
R904025
16
Multi-input Antenna Amplifier: Alcad CA-310
The CA-310 amplifier is used to amplify and distribute TV and FM radio signals. This model is a typical one, designed for the use in small and medium size community installations. It has three band inputs, two main outputs, and additional test output (-30 dB) used to couple a measuring device or spectrum analyzer. The amplifier supplements the group of CA-210 R90460, CA-215 R90461, AI-200 R90450.... more »
R904014
19
Outdoor Antenna Amplifier AM-407 ALCAD
The AM-407 amplifier has been designed for outdoor use as a mast device. It is used for signal amplification to a level required by several receivers. It can be fed from typical 24 V / 100 mA power supply with RF/DC separator. Feeding from another amplifiers providing power through the coax cable is also possible. While connecting preamplifiers it must be remembered to check the overall current consumption in order not to exceed the power supply's maximum capacity, or in advance to choose adequate one. The amplifier is characterized by low noise ratio.... more »
R903031
20
Outdoor Antenna Amplifier: ALCAD AM-316 (UHF-UHF-VHF/FM, F-connectors)
The AM-316 amplifier has been designed for outdoor use as mast device. The item can be applied within small antenna installations (several to a dozen or so outlets).... more »
R903052
21
Power Supply AL-105 12V/0.1A (F) for antenna amplifiers - ALCAD
The AL-105 supplier is dedicated for powering 12V family of Alcad amplifiers installed on antenna masts. AL-105 is not intended for unprotected outdoor use. It should not be installed in areas with increased humidity, near heaters, radiators and in other hot or cool (in winter) places. The unit requires natural ventilation, so it must not be covered by any objects. It ought not to be connected to the mains until all connections within an antenna installation have been properly made.... more »
R903087
22
Outdoor Antenna Amplifier AM-417 (BI/BIII-UHF-UHF; 12V) ALCAD
The AM-417 amplifier has been designed for outdoor use as a mast device. The item can be applied within small antenna installations (several to a dozen or so outlets). It can be fed from a typical 12 V / 100 mA power supply with RF/DC separator e.g. ZS12/100 D0010. It can be also powered via coax cable from some used within an installation amplifier e.g. CA-215 R90461. The amplifier is characterized by low noise ratio.... more »
R903717
23
Power Supply AL-100 24V/0.1A (F) for antenna amplifiers - ALCAD
The AL-100 supplier is dedicated for powering 24V family of Alcad amplifiers installed on antenna masts. AL-100 is not intended for unprotected outdoor use. It should not be installed in areas with increased humidity, near heaters, radiators and in other hot or cool (in winter) places. The unit requires natural ventilation, so it must not be covered by any objects. It ought not to be connected to the mains until all connections within an antenna installation have been properly made.... more »
R90386
24
2-input Antenna Amplifier CA-311 (built-in power supply, ALCAD 904 series)
The CA-311 amplifier is used to amplify and distribute TV and FM radio signals. It is a brand-name device designed for the use in small and medium size community installations. The CA-311 is equipped with two band inputs and two outputs. This model fills up the gap among CA-210, CA-215, AI-200 and CF-512 amplifiers. The amplifier is fed from its internal stabilized power supply, which is powered directly from the mains.... more »
R904011
25
Broadband RF Amplifier: Alcad CA-215
CA-215 amplifier is used as distributing device in small or private antenna installations, to ensure proper level of signal for multiple receivers. The amplifier works in 40 - 400 MHz and 470 - 862 MHz bands. Thanks to separate gain adjustment for VHF and UHF band, the levels can be set to fit the strength of the signals.... more »
R90461
26
Channel Amplifier: ALCAD ZG-421 (tuned to ordered channel)
The channel amplifier is pre-tuned to desired channel by the producer - making an order it is essential to give the number of the channel that is needed.... more »
R905039
27
FM Amplifier: Alcad ZG-201
The band amplifier covers whole FM band (88-108 MHz) and allows to distribute FM broadcasts within antenna installation. It cooperates with ZG-401, ZG-601 series.... more »
R90512
28
Shielded Antenna Preamplifier LNA-169 24dB
Shielded antenna preamplifier LNA-169 has been designed for placing in antenna box. It is an ideal solution in the case of weak signal levels. The broadband preamplifier covers BIII, IV, V bands. Metal housing eliminates susceptibility to interferences, as well as does not allow to radiate EM energy. The device is CE certified.... more »
B4008
29
Indoor Antenna Amplifier AWS-1241 (47-862MHz 1-in, 1-out, 28/31dB)
The broadband amplifier AWS-1241 has been designed for use in TV/FM antenna installations in homes and buildings. In the case of individual installations, the signals from band antennas have to be first combined in a diplexer. The amplifier passes DC voltage (12V) for supplying preamplifier/s. To use this option it is needed to set the jumper (it is shown in enclosed instructions).... more »
B117023
30
Indoor Antenna Amplifier AWS-1242 (47-862MHz 1-in, 2-out, 25/27dB)
The broadband amplifier AWS-1242 has been designed for use in TV/FM antenna installations in homes and buildings. In the case of individual installations, the signals from band antennas have to be first combined in a diplexer. The amplifier passes DC voltage (12V) for supplying preamplifier/s. To use this option it is needed to set the jumper (it is shown in enclosed instructions).... more »
B117024
31
Indoor Antenna Amplifier: AWS-1243 (47-862MHz; 1-in, 3-out; 24/26 dB)
The broadband amplifier AWS-1243 has been designed for use in TV/FM antenna installations in homes and buildings. In the case of individual installations, the signals from band antennas have to be first combined in a diplexer. The amplifier passes DC voltage (12V) for supplying preamplifier/s. To use this option it is needed to set the jumper (it is shown in enclosed instructions).... more »
B117025
32
Indoor Antenna Amplifier AWS-1244 (47-862MHz 1-in, 4-out, 21/23dB)
The broadband amplifier AWS-1244 has been designed for use in TV/FM antenna installations in homes and buildings. In the case of individual installations, the signals from band antennas have to be first combined in a diplexer. The amplifier passes DC voltage (12V) for supplying preamplifier/s. To use this option it is needed to set the jumper (it is shown in enclosed instructions).... more »
B117026
33
Indoor Antenna Amplifier: AWS-1030 SilverLine (BI-FM/BIII/2*UHF/33dB)
Amplifier for small community antenna installations (MATV systems). Having two UHF inputs, it eliminates in many cases the need of employing antenna diplexer. Solid housing protects the amplifier against external interferences.... more »
B11583
34
Indoor Antenna Amplifier: AWS-1031 (FM/BIII/3*UHF/30dB)
The amplifier has been designed for use in small antenna installations/MATV systems where there is a need of distributing return signals, e.g. from sat receivers, CCTV cameras etc. ... more »
B11585
35
FM Amplifier: AP-FM (18 dB, shielded)
The amplifier can improve FM reception in low-signal areas. It is an ideal device for cooperation with majority of the offered FM antennas. 75 ohm input/output impedance, compliance with CE standards.... more »
B9013
36
Indoor antenna amplifier AWS-1144 47-862MHz 4-out 13/15dB
The RF amplifier AWS-1144 has been designed for applications in individual and community antenna installations. The former use requires to employ an antenna branch filter/diplexer to combine the received channels. The amplifier can pass supplying voltage (12V) to preamplifiers. For this purpose one needs to short the jumper, as it is shown in the included instructions.... more »
B11686
37
Indoor antenna amplifier AWS-1143 47-862MHz 3-out 17/19dB
The RF amplifier AWS-1143 has been designed for applications in individual and community antenna installations. The former use requires to employ an antenna branch filter/diplexer to combine the received channels. The amplifier can pass supplying voltage (12V) to preamplifiers. For this purpose one needs to short the jumper, as it is shown in the included instructions.... more »
B11685
38
Channel Amplifier: Alcad ZG-401 (tuned to ordered channel)
High-end channel amplifier pre-tuned to a desired channel by the manufacturer - making an order it is essential to give the number of the channel that is needed. Designed for distributing signals in medium, large and very large MATV/SMATV systems.... more »
R90517
40
Shielded Antenna Preamplifier LNA-101 15dB
The preamplifier LNA-101 has been designed for mounting just in antenna box. Such amplifiers are necessary in the case of low signal levels, longer antenna cables, or splitting antenna signal. They also match 300 ohm antenna impedance to 75 ohm impedance of coaxial cable. ... more »
B4007
44
Indoor antenna amplifier AWS-1141 47-862MHz 1-in, 1-out 21dB
The RF amplifier AWS-1141 has been designed for applications in individual and community antenna installations. The former use requires to employ an antenna branch filter/diplexer to combine the received channels. The amplifier can pass supplying voltage (12V) to preamplifiers. For this purpose one needs to short the jumper, as it is shown in the included instructions.... more »
B11683
45
Indoor antenna amplifier: AWS-1142 SilverLine (47-862MHz, 2-out, 17/19dB)
The RF amplifier AWS-1142 has been designed for applications in individual and community antenna installations. The former use requires to employ an antenna branch filter/diplexer to combine the received channels. The amplifier can pass supplying voltage (12V) to preamplifiers. For this purpose one needs to short the jumper, as it is shown in the included instructions.... more »
B11684
46
Channel Amplifier: Alcad ZG-601 (tuned to ordered channel)
The channel amplifier is pre-tuned to a desired channel by the producer - making an order it is essential to give the number of the channel that is needed, within the whole cable band (including hyperband) i.e. 110-174 MHz and 230-470 MHz.... more »
R90538
47
Indoor Antenna Amplifier: AWS-03F (2-in/2-out, with power supply)
This antenna amplifier has two inputs and two outputs, and is designed for home TV installations. The 12 V/100 mA (output) stabilized power supply is a part of the set.... more »
B1018
48
Indoor Antenna Amplifier: AWS-143ST (with power supply)
Broadband amplifier for home TV installations (also for distributing cable TV to multiple receivers). The amplifier can provide +12VDC voltage to a preamplifier installed on/near the antenna. 12V/120mA (output) stabilized power supply is included in the set. The amplifier can also be fed through one of its outputs (this one marked with "DC" - input A). It is possible when connecting another power supply with separator (not included) to the coax cable coupled with the output.... more »
B11689
49
Indoor Antenna Amplifier - AWS-144 (with power supply)
It is one-input, four-output antenna amplifier for small TV installations. The12V/100mA (output) stabilized power supply is included in the set. The amplifier has switch allowing to provide +12 V power to preamplifier installed near the antenna. It can be also fed through one of the outputs (via coaxial cable).... more »
B1170
51
Indoor Antenna Amplifier - AWS-133S (with power supply)
It is four-input, one-output antenna amplifier for small TV installations. The 12V/100 mA (output) stabilized power supply is included in the set. The amplifier has switches allowing to provide +12 V power to preamplifiers installed near UHF antenna. The amplifier can also be fed through the output (via coaxial cable). There are separate gain adjustments for each input.... more »
B11883
52
ARA 1/2F Active Antenna Splitter
The active signal multiplexer can be used in cable networks or MATV installations. It is advised to use it if a passive splitter causes the signal level is too low. The device has two F outputs. The ARA-1/2F splitter is fed from the external stabilized power supply making the full set. It is not designed for use in open spaces. It cannot be installed in wet conditions or near heaters and similar equipment. Providing natural ventilation is a must - the supplier must not be covered by any object. To avoid any possible damage, power should not be switched on until all connections are properly made.... more »
B1213
53
ARA 1/3 F Active Antenna Splitter
The active signal multiplexer can be used in cable networks or MATV installations. It is advised to use it if a passive splitter causes the signal level is too low. The device has three F outputs. The ARA-1/3F splitter is fed from the external stabilized power supply making the full set. It is not designed for use in open spaces. It cannot be installed in wet conditions or near heaters and similar equipment. Providing natural ventilation is a must - the supplier must not be covered by any object. To avoid any possible damage, power should not be switched on until all connections are properly made.... more »
B1214
54
ARA 1/4 F Active Antenna Splitter
The active signal multiplexer can be used in cable networks or MATV installations. It is advised to use it if a passive splitter causes the signal level is too low. The device has four F outputs. The ARA-1/4F splitter is fed from the external stabilized power supply making the full set. It is not designed for use in open spaces. It cannot be installed in wet conditions or near heaters and similar equipment. Providing natural ventilation is a must - the supplier must not be covered by any object. To avoid any possible damage, power should not be switched on until all connections are properly made.... more »
B1215
55
Antenna Amplifier - AWS 1/1F
This broadband amplifier can be used in cable networks or MATV installations. It is advised to use it when the signal level is too low. The AWS-1/1F amplifier is fed from the external stabilized power supply making the full set. It is not designed for use in open spaces. It cannot be installed in wet conditions or near heaters and similar equipment. Providing natural ventilation is a must - the supplier must not be covered by any object. To avoid any possible damage, power should not be switched on until all connections are properly made.... more »
B1216
56
Active Outdoor Antenna Splitter - R-51
This multiplexer is used for splitting signal among multiple receivers. It is advised to use it if a passive splitter causes the signal level is too low. The device has four outputs. Power supply is not included. The splitter is powered through No. 4 output from another equipment, or with 12V power supply with RF/DC separator.... more »
B1220
57
Indoor Antenna Amplifier: AWS-142S
Amplifier for home TV installation. The amplifier can provide +12 V power to preamplifier installed near the antenna. The 12V/100mA (output) stabilized power supply is included in the set. The amplifier can also be fed through one of its outputs (this one marked with [DC]). It is possible when connecting another power supply with separator (not included) to the coax cable coupled with the output.... more »
B11688
58
Indoor Antenna Amplifier: AWS-141S
Amplifier for home antenna installations. It can provide +12 V power to preamplifier installed near the antenna. The 12V/100 mA (output) stabilized power supply is included in the set. The amplifier can also be fed through its output. It is possible when connecting another power supply with separator (not included) to the coax cable coupled with the output.... more »
B11687
59
Indoor Antenna Amplifier - AWS-130S (with power supply)
It is three-input, one-output antenna amplifier for small TV installations. The 12V/100 mA (output) stabilized power supply is included in the set. The amplifier has switches allowing to provide +12 V power to preamplifiers installed near UHF antenna. The amplifier can also be fed through the output (via coaxial cable). There are separate gain adjustments for each input.... more »
B11682
60
Indoor Antenna Amplifier: AWS-03AF (with preamplifier and power supply)
This antenna amplifier has two inputs and two outputs, and is designed for home TV installations. The 12 V 100 mA (output) stabilized power supply and the preamplifier (to be installed in the UHF antenna's box) are included in the set.... more »
B1019
61
Indoor Antenna Amplifier: AWS-07AF (with power supply)
Antenna amplifier with three inputs and two outputs, designed for home TV installations. The 12VDC 100 mA (output) stabilized power supply is included in the set.... more »
B1025
63
Indoor Antenna Amplifier: AWS-10A (with power supply)
Antenna amplifier with one input and two outputs, designed for home TV installations. The 12VDC 100mA (output) stabilized power supply is included in the set.... more »
B1066
64
Outdoor Antenna Amplifier: AWS-118M (with power supply)
Three-input antenna amplifier for home TV installations. The 12VDC/100 mA (output) stabilized power supply with RF/DC separator is included in the set. The amplifier is fed through the same coaxial cable which transmits the signal from the amplifier to the receiver. ... more »
B11401
65
Outdoor Antenna Amplifier: AWS-1021M (with power supply)
Four-input antenna amplifier for home TV installations. The 12V/100 mA (output) stabilized power supply with RF/DC separator is included in the set. The amplifier is fed through the same coaxial cable which transmits the signal from the amplifier to the receiver.... more »
B11551
69
32dB Channel Antenna Amplifier A-50 (factory-set on the channel 21 to 60)
Channel amplifier is used in extremely bad reception cases. It allows to achieve the demanded level of the channel which is much weaker than others. The device can be used as a preamplifier.... more »
B2010
70
Combination Antenna Amplifier AW-3/1-12/26, 52/T/21-69
The device is used in particular area where listed below channels are broadcasted and generally there are hard conditions of reception. The amplifier allows to connect three antennas from which:... more »
B2140
71
Building Amplifier: Terra HA-023
The amplifier has been designed for use in small and medium size antenna installations. It has modern push-pull output stage, built-in attenuator and cable attenuation equalizer, F-type connectors.... more »
R82290
72
Building Amplifier: Terra HA-123
The amplifier has been designed for use in small and medium size antenna installations. It has modern push-pull output stage, built-in attenuator and cable attenuation equalizer, F-type connectors.... more »
R82301
73
Building Amplifier:Terra HA-126
The amplifier has been designed for use in small and medium size antenna installations. It has modern push-pull output stage, built-in attenuator and cable attenuation equalizer, F-type connectors.... more »
R82303
75
FM/TV House Amplifier: Terra HA203R65 (return path)
House/building amplifier HA203R65 is the first amplifier within our offer which is equipped with output stage using Gal-As semiconductor components, working in push-pull mode. The next innovation is driving stage, employing IC made of Si-Ge semiconductor. Such a solution significantly reduces non-linear distortions, especially of second order.... more »
R82306
76
Multi-Band Amplifier: Terra MA-014
The amplifier has 5 band inputs, each input is equipped with adjustable attenuator. There is possibility of powering additional equipment (preamplifiers). Additional 12 VDC output (2.1/5.5 mm) can be used for powering additional amplifiers. Short-circuit protection, F connectors. ... more »
R82310
77
5-Band Amplifier (community ant.) MA113 Terra
The amplifier is designed for FM signals amplification - 1 input, and TV signals amplification: VHF - 1 input, and UHF - 3 inputs. Each of inputs enables independent gain adjustment.... more »
R82313
78
Sat Line Amplifier 20dB SA-001 Terra
The device is designed for satellite signal amplification within installation built of multiswitches. It can also amplify signal from LNB in the case when the distance to the receiver is quite long, which could impair transmission quality and reliability.... more »
R85101
79
Universal Multiband Amplifier: TELMOR WWK-861 (tuned)
Universal antenna amplifier designed for small antenna installations (MATV systems), suitable for analog and DVB-T broadcasts. It allows to equalize signals on six UHF channels. ... more »
R89860
80
MA025 building amplifier
Used to amplify FM radio signal, and VHF I (1 input), VHF III (1 input), and UHF (2 inputs) bands TV signal. The amplifier has a high output signal level (115 dBuV), it is short-circuit-proof. In-built suppressor on each input. Additional 12 V 2,1/5,5 mm connectors, for feeding further amplifiers, F-type connectors.... more »
R821201
81
Multi-input amplifier: Terra MA024
The device has been designed to amplify FM-VHF I (1 input), VHF III (1 input), and UHF (2 inputs) bands. The amplifier features high output signal level (115 dBuV). Each input of the amplifier has built-in attenuator, and allows to power a preamplifier (short-circuit protection). The device is equipped with F-type connectors and 12VDC output (2.1/5.5 mm connector) that may be used for powering additional equipment.... more »
R821101
82
VHF/UHF Amplifier - HS-013A Terra (1-input / 2-output)
It is new amplifier of Terra, being equivalent of well known AI-200 R90450. Both types have very similar parameters.... more »
R82020
83
Miniature Broadband Amplifier: AF-0169/Z (channels 1-69; 18 dB)
It is 18 dB subscriber line amplifier, with 106 dBuV output level, for indoor use. It works in the whole TV and FM band (47-862 MHz). It can be fed in two ways: with mini-jack connector, or through coaxial cable (12 VDC). The amplifier can be used in small installations, especially where signal from the antenna without amplifier guarantees good reception for one receiver, but after splitting it and connecting next TV sets the signal becomes too low. To avoid any outdoor work - this mini amplifier may be applied. The device has metal casing and F-type connectors.... more »
B2501
84
Outdoor Broadband Amplifier: AFP-0160/30 (channels 1-60; 30dB)
It is preamplifier with 30 dB gain in TV and 22 dB in FM band. Designed for outdoor use. Fed through coaxial cable (12 V / 60 mA). The amplifier can be used in small installations, especially where signal from the antenna without amplifier guarantees good reception for one receiver, but after splitting it and connecting next TV sets the signal becomes too low. It can be installed on antenna mast. Gain adjustment: 15 dB.... more »
B2505
85
Pass-through amplifier: AP-109M (27/29 dB)
This shielded broadband amplifier (CE certified) is usually used as preamplifier in antenna systems, often with broadband antennas. In the case of using 300-ohm antennas there will be needed matching transformer between the antenna and amplifier. ... more »
B4013
86
AP-107M 21/23 dB shielded antenna amplifier
The amplifier is designed for terrestrial TV signal amplification. It is highly recommended for use with broadband antennas. The amplifier's input and output impedance equals to 75ohm, therefore for antennas of 300ohm impedance a matching transformer must be used, e.g. C0005. The amplifier is CE cerificated.... more »
B4023