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Our products
     
 

Most products can be customised according to customer requirements.

On demand special requirements designs can be made to order.

 
     
Radio Preselectors
         
 


SCR Preselector page.

SCR Preselector-CAT

High-performance Software Controlled Radio Preselector.

1.8MHz to 50MHz tunable Band-Pass Filter bank. Digital tuning.

Remote control software runs under all Windows OS including
Windows 10 last Anniversary Update.

 

Five operating modes:

Stand alone mode: By means of its control knobs.

Remote Control modes:

- GUI. Graphic User Interface console from PC.

- CAT. From dedicated radio software. Tracking feature.

- Supported by DDUtil v3.

- TCP/IP. Over the Internet or local network.

- I2C bus. From a dedicated external control system.

 
 

Tiny-CAT SCR preselector

Tiny-CAT SCR Preselector

Modular Software Controlled Radio preselector.

1.8MHz to 30MHz tunable Band-Pass Filter bank. Digital tuning.

Intended to complement experimental projects due its modular design.

Remote control software runs under all Windows OS including
Windows 10 last Anniversary Update.

 

 Four remote control modes:

- GUI. Graphic User Interface console from PC.-

- CAT serial protocol, Tracking feature.

- TCP/IP. Over the Internet or Local Network.

- I2C bus. From PowerSDR application.

 
 
         
Band Converters
 

 

VLF-LF Up-Converters
VLF-LF <5kHz to 500kHz to 3.5MHz-4MHz up converter. (model 350)
VLF-LF <5kHz to 500kHz to 4MHz-4.5MHz up converter. (model 400)

Compatible with any analogue radio(valves, semiconductors) or
Software Define Radio (SDR).

 




VHF Down-Converter
144MHz-146MHz to 28MHz-30MHz VHF down converter.

Compatible with any analogue radio(valves, semiconductors) or
Software Define Radio (SDR).

 
         
Amplifiers
  Filtered Preamplifier    

LF-HF-VHF-UHF range of Pre-Filtered, Low Noise, High IP3 preamplifiers.

 
    Antenna Accessories    
         
     
  Longwire antenna Z match  
  Longwire Antenna Impedance Match.
Suitable for SDR or analogue radios.
Outdoor mount.
 
     
         
  Noise Isolator   Antenna Galvanic Isolator  
 

Antenna Feed Line Noise Isolator
Recommended while working with SDR radios to prevent computer crashes.
Outdoor mount.

  Antenna Galvanic Isolator.
Recommended while working with SDR radios.
Suitable for analogue radios.
Outdoor mount.
 
         
Antenna / Signal switching. Station automation.
 

DC-3GHz coaxial relay.
Slim size.
Power Rating 100Watts@3GHz

 

General purpose HF-VHF-UHF Dual Port, By-Pass relay.
100 Watts RF power rating.

 
 

General purpose LF-HF, Dual Port, By-Pass relay.
150 Watts RF power rating.


 

RF Switch details

Solid State RF switch (no relays)
DC - 3GHz

 
 

Antenna relay

General purpose antenna/signal relay.
150Watts RF power rating.

 

Antenna Splitter&By-Pass Relay.
A transceiver and a secondary receiver using the same antenna simultaneously.
On transmission switch-over the secondary receiver is by-passed
Enables Panoramic Reception if a SDR is used as secondary receiver.

 
    Splitter - Combiner    
 

Two way Passive Antenna/Signal Splitter-Combiner
Two receivers using the same antenna simultaneously.
Frequencies range:
model VLF 4KHz to 60MHz
- Insertion loss: 3dB max.

 

Two way Passive Antenna/Signal Splitter-Combiner
Two receivers using the same antenna simultaneously.
Frequencies range:
model HF 100KHz to 400MHz
- Insertion loss: 3dB max.

 
 

Antenna Splitter & By-pass relay

Antenna Splitter&By-Pass Relay.
A transceiver and a secondary receiver using the same antenna simultaneously.
On transmission switch-over the secondary receiver is by-passed
Enables Panoramic Reception if a SDR is used as secondary receiver.

 
    RF Filters    

 

100 Watts rating Broadcast Band Rejection filter (BCB filter)
By-passed filter in reception with no relays.
Suitable for inserting between any HF transceiver and antenna.

 

RF accessories

Mini Low Pass Filters range

 
         
    Galvanic Isolators    
         
     
 

USB Galvanic Digital Isolator for SDR radios.

 

Audio Line Galvanic Isolator.
Two channels.
Suitable for SDR radios, ultrasonic applications and audio systems.

 
         
         
    VHF-UHF Galvanic Isolator  
  10KHz to 60MHz Antenna Galvanic Isolator. Indoor
Recomended for SDR radios.
Suitable for analogue radios.
  VHF-UHF-SHF Antenna Galvanic Isolator.
Suitable for SDR or analogue radios
 
         
    Measurement    
         
 

0 TO 71 dB step attenuator Ladder configuration.

 

RF accessories

Pad attenuator range

 
 


     
 

40dB "T" attenuator. 100 Watts power rating.
Panoramic adaptor for transceivers & general measurements tool.

 

 

RF accessories

General purpose impedance measurement bridge.

 
         
    Accessories    
         
         
   

PTT foot switch

Robust momentary action foot operated switch with non slip base.

• 1.8m cable length.
• Standard 3.5mm jack plug. Other connectors available, Please ask.
• Dimensions 74 x 75 x 32mm
• Rated 3A 250V AC

 
         
    Electronic components    
         
  Offers   Toroid cores  
         
 

  RF components  
 

LODESTONE PACIFIC
Toroid Mounts

  Mini-Circuits  


 

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