Hi-Power 10kHz - 150MHz LF-HF-VHF Antenna Galvanic Isolator. Indoor mounting version.

 
         
 
N connector option.
SO239 connector option.
BNC connector option.

Man Made Noise.Sources of interference.
(click on image to enlarge)

 

Rejects pick-up noise from the antenna feedline by removing ground loops.

- Specifically recommended to work with SDR radios.
- Suitable for analogue radios.
- Indoor use.

The indoor broadband antenna galvanic isolator allows isolate the antenna galvanically from the receiver; only magnetic signal is coupling from the antenna.
Ground loops in SDR radios induced by the antenna feeder are very common if the computer ground is connected to the radio system increasing local background noise.
This type of ground loop issue can be solved by using galvanic isolation between the receiver earth system and the antenna earth.
In most station installations the antenna coaxial feeder is connected to mains earth at the receiver side. This can cause mains noise to enter into the receiver because either the feeder mains earth line is the return path for the antenna or noise being coupled to the antenna and radiated.
The Antenna Isolator can achieve up to 40dB noise rejection, depending on installation.
It embedded a high isolation broadband transformer wound on a large toroid core 200 Watts power rated .
It includes gas discharge tube as protection against electrostatic discharges.

- Frequency range: 10kHz to 150MHz.
- Flat response along the covered range of frequencies.
- Insertion loss: -2.9dB max@150MHz
- Power rating: 200 watts continuous wave.(400watts PEP)
- Input/Output impedance: 50 Ohm..
- Connector Options: SO-239, BNC, "N type " available.
- Gas discharge tube protection.
- Earth terminal post for antenna separate earth connection.
- Indoor mounting version.
- Size: 86mmx57mmx36mm( 3.4x2.2x1.4in)

Plot

 

Antenna Galvanic Isolator response plot.
Insertion loss ( attenuation) in function of frequency.
(click on image to enlarge)

 

Antenna Galvanic Isolator. Cabling.
(click on image to enlarge)

User Manual

Hi-Power 10kHz to 150MHz Antenna Galvanic Isolator datasheet.

 
         
     
  "Frying noise" on receiver antenna port without in-line Antenna Galvanic Isolator.
(click on picture to enlarge)
  Same noisy situation but with in-line plugged-in Antenna Galvanic Isolator.
(click on picture to enlarge)
 
         
         
         
   
  Reception Effectiveness video clip.  
  Hi-Power 10kHz - 150MHz LF-HF-VHF Antenna Galvanic Isolator. Indoor. Connector options.  
  Hi-Power 10kHz to 150MHz Antenna Galvanic Isolator. Connector option: SO-239 ; SKU: HS-100SO £ 95.00 Order  
         
  Hi-Power 10kHz to 150MHz Antenna Galvanic Isolator. Connector option: BNC ; SKU: HS-100B £ 90.00 Order  
         
  Hi-Power 10kHz to 150MHz Antenna Galvanic Isolator. Connector option: N ; SKU: HS-100N £ 102.00 Order  
The set includes:
10kHz to 150MHz Antenna Galvanic Isolator and user manual in CDROM format.
     

  Hi-Power 10kHz - 150MHz LF-HF-VHF Antenna Galvanic Isolator. Outdoor mounting version.  
         
 
 
 

 

Rejects pick-up noise from the antenna feedline by removing ground loops.

- Specifically recommended to work with SDR radios.
- Suitable for analogue radios.
- Indoor use.

Outdoor version of the above broadband antenna galvanic isolator. It allows isolate the antenna galvanically from the receiver; only magnetic signal is coupling from the antenna.
Ground loops in SDR radios induced by the antenna feeder are very common if the computer ground is connected to the radio system increasing local background noise.
This type of ground loop issue can be solved by using galvanic isolation between the receiver earth system and the antenna earth.
In most station installations the antenna coaxial feeder is connected to mains earth at the receiver side. This can cause mains noise to enter into the receiver because either the feeder mains earth line is the return path for the antenna or noise being coupled to the antenna and radiated.
The Antenna Isolator can achieve up to 40dB noise rejection, depending on installation.
It embedded a high isolation broadband transformer wound on a large toroid core 200 Watts power rated .
It includes gas discharge tube as protection against electrostatic discharges.

- Frequency range: 10kHz to 150MHz.
- Flat response along the covered range of frequencies.
- Insertion loss: -2.9dB max@150MHz
- Power rating: 200 watts (400watts PEP)
- Input/Output impedance: 50 Ohm..
- Connector: "N" type
- Gas discharge tube protection.
- Weatherproof assembly.
- Outdoor mounting version.
Enclosure:
  Cover: ABS material rated to UL 94V-0. Protection IP65.
  Chassis: 2mm thick treated Aluminium.

  Stainless still screws.
   Mast clamp included.
 Size:

 
         
     
  "Frying noise" on receiver antenna port without Antenna Galvanic Isolator.
(click on picture to enlarge)
  Same noisy situation but with plugged-in Antenna Galvanic Isolator.
(click on picture to enlarge)
 
         
  10kHz - 150MHz Antenna Galvanic Isolator. Outdoor mounting version options  
  Antenna Galvanic Isolator Outdoor version. Connector option: N ; SKU: HST-212N £ 148.00 Order  
  Antenna Galvanic Isolator Outdoor version. Connector option: SO-239 ; SKU: HST-212SO £ 130.00 Order  
  The set includes:
Antenna Galvanic Isolator. Outdoor mounting, mast clamp and user manual in CDROM format.
     
       

  HF-SHF Galvanic Isolator. 3MHz-2.5GHz  
 
     
 


 

 

 
     
         
         
     
 

Full galvanic isolation between connected radio equipment.
Removes noisy
ground loops.
Protection again different ground potentials.

Features:

The broadband 3MHz to 2.5GHz HF-SHF Galvanic Isolator ensures full galvanic isolation between connected radio equipment and accessories ensuring that signal and ground paths on input and output ports are completely isolated from each side, only magnetic signal is transferred.

That gives protection between connected circuits that could be at different ground potentials, source of unexpected damages on receivers, while avoiding the appearance of noisy ground loops.

The HF-SHF Galvanic Isolator can achieve up to 40dB noise rejection due ground loops.

Specifications:

- Broadband frequency: 3MHz - 2.500MHz
- Nominal impedance: 50Ω
- Input-Output Z ratio: 1:1
- Power rating max.: 250mW (+24dBm) (3.5V/50Ω)
- DC current: 30mA (max)
- Insertion Loss: see graphic plot below
- Connectors: SMA
- Enclosure Size: 37mmx37mmx25mm( 1.45x1.45x0.98in)

Transformer:

- Ceramic base
- Ferrite core
- Transformer Inter winding test isolation: 250VPP
- Terminations tin-silver-copper over silver-platinumglass frit. RoHS compliant.
- Operating temperature range: – 40°C to +85°C
- Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity)
- Failures in Time (FIT) / Mean Time Between Failures (MTBF): 60 per billion hours.
(16,666,667 hours, calculated per Telcordia SR-332)


* RF measurements referenced to 50 Ohms.
* Electrical specifications at 25°C.

Manual

Datasheet

 

 
 

HF-SHF Galvanic Isolator response graphic plot.

 

 
HF-SHF Galvanic Isolator. SKU: HS-120
  HF-SHF Galvanic Isolator. 3MHz-2.5GHz; SKU: HS-120 £ 144.00 Order  
  The set includes:
HF-SHF Galvanic Isolator and user manual in CDROM format.
     
       

 

USB Galvanic Digital Isolator for SDR radios

The USB Galvanic Digital Isolator is not suitable for USB 2.0 High Speed mode devices.

 
         
 
 

Features:

The USB Galvanic Digital Isolator for SDR radios is designed to break the galvanic connection between USB host PC and the attached SDR radio peripheral avoiding that whatever power and ground noise from the PC side do not influence the sensible radio on the other side.

The resultant galvanic isolation improves common-mode voltage, prevents ground loops, a common cause of interference and data distortion issues, improves reception, as the noise floor in the receiver is lowered, and removes spikes and birdies on the PC panoramic screen. In addition provides isolation of 1000V AC between the host PC and the radio peripheral that guard against surges that may come from the antenna connected to the receiver.

 

The USB Galvanic Digital Isolator for SDR radios is based on ADuM 4160
Full/Low Speed 5 kV USB Digital Isolator and ADuM 5000 Isolated DC-to-DC Converter both from Analog Devices combining high speed CMOS and chip-scale air transformer iCoupler technology.

The USB Galvanic Digital Isolator complies with specifications USB 1.1, Low speed (1.5Mbps) and USB 2.0 Full Speed (12Mbps). It is not suitable for USB High Speed mode devices. The speed mode is set manually via two jumpers inside (default full speed). Most of the time it is not necessary to change between modes but if automatic speed detection is desired, an external hub can be connected to the peripheral side configured for full speed.

The USB Galvanic Digital Isolator is self powered from the host PC through the USB cable. An embedded DC/DC converter provides a galvanic isolated voltage of 5VDC/100mA to the peripheral side. It includes additionally ESD,EMC protection of the data lines and power transient short-circuit guard.

It is highly advisable not to power any part of the connected radio from the USB bus, instead an external dedicated power supply must be used.

The USB Galvanic Digital Isolator behaves like an USB cable, no USB drivers are needed. It works on all operating systems, Mac, Windows,Linux, etc.


Technical:
- USB modes: Full speed (12 Mbps) Low speed (1.5 MBps). Switchable.
- No suitable for USB 2.0 High Speed mode devices.

- Isolation 1.000 Volt AC
- Protection: EMC, ESD, Overvoltage Surge, Short-circuits.
- Power supply:
- PC side: From USB cable, 5VDC. Attached signaling LED.
- Drawn power from peripheral radio max: Through USB cable, 5V DC/100mA max.
- Standard socket connectors: PC side: USB type B, peripheral side: USB type A.
- Dimensions 67 mm x 66 mm x 28 mm.(2.638x2.598x 1.102inch)
- USB High Speed 2.0 pair of cables included.

 

 


Type A-B USB sockets. USB cables are included.

 

USB Galvanic Digital Isolator datasheet

 
         

  USB Galvanic Digital Isolator for SDR radios ; SKU: HS-150 £ 95.00 Order  
The set includes:
USB Galvanic Digital Isolator, user manual in CDROM format and two USB High Speed 2.0 cables.
     
         

  Audio Line Galvanic Isolator. Two channels.  
         
 

 

 
         
 

Suitable for SDR radios, on ultrasonic applications and audio systems.

 The Audio Line Galvanic Isolator removes inherent ground coupling noises providing isolation between input/output unbalanced connected interfaces. It is a differential responding high common mode rejection device that removes Hum and Buzz artifacts enhancing signal quality by reducing spectral contamination due RF interference.
On Software Define Radio applications where a computer sound card is used to sample I/Q signals, ground loops are very common through receiver between USB connection and sound card (spikes on screen) This kind of ground loop issue can be solved galvanically isolating the path between the receiver I/Q outputs and the sound card inputs.
The Audio Line Galvanic Isolator is built around two broadband high linearity, low distortion, MIL spec broadband transformers. Transformers make excellent ground isolators. They transfer signal voltage from primary to secondary without any electrical connection between them breaking the path of the noise current that would otherwise flow between interface devices.
The Audio Line Galvanic Insulator is shielded in metal case. In addition internal transformers are covered with μ-metal EMI shielding case that virtually eliminate any electromagnetic interference from nearby sources.
Input/output connector ports are Rean-Neutrik Tiny XLR improving the device shielding due their high noise immunity and EMI protection. The socket free rugged locking mechanism provides secure and reliable connection.
Input and output device ports can be configure by means of jumper links:


Input configurations available:
Input impedance 600Ω
Unbalanced-input ground. Unbalanced-floating input ground. Balanced.

Output configurations available:
Load impedance 600Ω or Hi Z , configurable.
Unbalanced-output ground. Unbalanced-floating output ground. Output ground to case chassis (Earth). Balanced.

Professional grade input/output cable tails for interface connection are included. Default cable configuration is unbalanced, 3.5mm stereo jack ending. Other cable options available please ask.

Technical specifications:

- Passive device. Two channels.
- Input Z: 600Ω
- Output Z: 600Ω/Hi Z load, configurable.
- Case chassis screw for Earth connection.
- Broadband frequency response @ ± 2dB: 300Hz-100kHz
- Power level: 50mW
- Isolation test: 1000 VRMS/1 sec
- Working voltage: 150VDC
- Size: 111mmx37mmx30mm (4.37x1.45x1.18in)

 
     
     
  High quality Input/Output professional cable tails are included.   Configurable input and output ports by means of jumper links.  
  Audio Line Galvanic Insulator ; SKU: HS-160 £ 144.00 Order  
  The set includes:
Audio Line Galvanic Insulator user manual in CDROM format and two professional grade cables tails.