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Most products can be customised according to customer requirements.

On demand special requirements designs are 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-MF bands 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

 

 

 

From 300kHz to 500MHz range of eleven Pre-Filtered, Very Low Noise, High IP3 preamplifiers.

Suitable as IF Buffer for SDR radios, instrumentation and general purpose. Featuring On-Off / By-pass function.

 
Splitter - Combiner
 

4kHz-60MHz Splitter

Two way Passive Antenna/Signal Splitter-Combiner
Frequencies range:
model VLF (4KHz to 60MHz)

 

Two way Passive Antenna/Signal Splitter-Combiner
Frequencies range:
model HF (100KHz to 400MHz)

 
         
 

Antenna Splitter & By-pass relay

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.

 

 
Measurement
 
 

Variable Attenuator 0-71dB

Variable 0dB to 71dB step attenuator Ladder configuration. 1dB step.

 

Attenuator pad

Pad attenuator range

 
 


     
 

40db High power Attenuator

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

 

 

Measurement bridge

General purpose impedance measurement bridge.

 
         
Antenna Accessories
 
         
    Antenna Galvanic Isolator  
  10KHz to 60MHz Antenna Galvanic Isolator.
Specifically recommended to work with SDR radios.
Suitable for analogue radios.
Indoor mount.
  Antenna Galvanic Isolator.
Specifically recommended to work with SDR radios.
Suitable for analogue radios.
Outdoor mount.
 
         
         
  Noise Isolator   Longwire antenna Z match  
 

Antenna Feed Line Noise Isolator
Suitable for SDR and analogue radios.
Outdoor mount.

  Longwire Antenna Impedance Match.
Suitable for SDR and 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.


 

Solid State RF Relay. DC-3GHz.
No Relays, No mechanical parts, No moving parts.
Very High Isolation port to port >100dB.
Form C. SPDT Absorptive configuration.
 
 

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.

 
RF Filters

 

MW Broadcast Band Rejection filter (BCB filter) 200 Watts power rating.
To be inserted between the antenna and the transceiver.
No filter switching system is needed (No relays).

 

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
Specifically recommended to work with SDR radios.
Suitable for analogue radios.
  VHF-UHF-SHF Antenna Galvanic Isolator.
Specifically recommended to work with SDR radios.
Suitable for analogue radios.
 
         
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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