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High-performance Software Controlled Radio Preselector
TUNABLE BANDPASS FILTER BANK FOR HF BANDS
Covering 1.8MHz to 30MHz in five bands.
Variable Digital Tuning.
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tiny SCR Preselector
The little brother of the SCR Preselector
A less complex version of the SCR Preselector.
Modular 1.8MHz to 30MHz Tunable Band Pass Filter.
Software Controlled Radio Preselector via USB v2.0
Assembled and kit versions.
The tiny SCR Preselector is growing!
Now I2C Bus control and enclosure available!
Passive RF filters
BCB, Broadcast Band rejection High Pass Filters
(Brick-Wall filter)
LPF, BPF, Accessories
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0 to 71dB Precision Ladder Attenuator
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The low power rating step attenuator presented here for measurement purposes, is an inestimable tool for accurate control of amplitude levels. In addition, it improves the impedance match between impedance-sensitive devices, such as amplifiers, oscillators and filters, lowering the VSWR of components connected in cascaded mode by providing isolation between the impedances.
Furthermore, the step attenuator is suitable for receiver front-end protection or as calibrated attenuator for receiving performance evaluation.
The attenuator in ladder configuration uses eight high quality low stray capacitance double pole double throw (DPDT) toggle switches to select different amounts of attenuation. The unit provides 0-71 dB of attenuation in 1 dB step.
Based on Minicircuits PAT+ series, wideband DC to 7GHz fixed ceramic attenuator cells of 1dB-2dB-3dB-5dB-10-dB-10dB-20dB-20dB, it gives a precise reference of attenuation
Connectors protected with no short-circuited metallic dust caps.
RG 223 double Silver Plated Copper Braid Shields BNC-BNC coaxial leads included.
All connectors are Amphenol original.
Features:
Power rating: 1-Watt maximum.
Impedance: 50 Ohms
External Dimensions: (H, W, D): 30x37x148mm. (1.18x1.45x5.82in)
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Precision Ladder Attenuator
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£ 88.00
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Impedance Adapter for longwire or beverage antenna.
To connect an auxilliary longwire or beverage antenna on table-top or portable receivers.
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Provides the impedance match for the high Z that present wire antennas.
A special designed broadband toroidal transformer provides the impedance match between the antenna and the 50 ohm input impedance of receivers.
Ideal for connect an auxilliary longwire or beverage antenna on table-top receivers or for portable operation.
Gas Discharge Tube safeguard.
4 mm. banana/screw post for the wire antenna side connection.
BNC connector on 50 Ohm Receiver side.
Earth post.
Frequency: HF 0.1MHz to 30MHz.
Power rating: Reception.
External dimensions (H,W,D): 30x55x37mm. (1.18x2.16x1.45in)
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Impedance Adapter - High Z to 50 Ohms |
£ 45.0 |
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Electronic Components
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PIC microprocessors, Programmer, modules
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