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Kiwi Protection Circuit For Any SDR
SKU Part Number:
KIWI-PROTECTION-CIRCUIT
We have seen a number of Kiwisdr radios recently that have suffered serious damage due to one of the following causes;
Nearby lightning...
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£28.96
Availability: In stock
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Call 0345 2300 599We have seen a number of Kiwisdr radios recently that have suffered serious damage due to one of the following causes;
- Nearby lightning storms
- Transmitting into an antenna close the to the Kiwisdr antenna
- Accidentally transmitting directly into the Kiwisdr
These failures are usually uneconomic to repair, resulting in the owner needing to purchase a new radio circuit board. The internal Beaglebone computer is usually okay.
To try and prevent these failures, we have designed an SDR protection device using two 50-ohm RF balun transformers and a dual TVS (transient voltage suppression) diode. It is a small PCB protected by clear heat shrink tubing.
The circuit has a 1dB insertion loss from 0.1-30MHz, which will not have any noticeable effect on HF SDR operation.
It has been designed for Kiwisdr radios but will work with any receiver.
We have tested the circuit by applying 100W directly into the circuit connected to a KiwiSDR. Neither the SDR protection circuit or the Kiwisdr suffered any damage. If you applied 1kW direct into a Kiwisdr, hopefully the protection circuit would fail and protect the Kiwisdr, but there are no guarantees at that power level.
This circuit could save your SDR radio from serious damage. It is designed to help in an accidental situation. It should not to be used for regular intentional exposure to high power levels.
The circuit is covered in clear heatshrink for physical protection.
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Returns:
If you have any equipment that needs to be returned to Martin Lynch & Sons, please fill out the form below:
Upon receipt of goods you have 14 days to return goods however the goods must be returned in original packaging and care must have been taken with the goods you wish to return. Under distance selling regulations you are not entitled to any refund on carriage charges or modification charges made at your request. Large items cannot be returned if they have been assembled, unless faulty.
Warranty Terms and Conditions
Outside of the 14 faulty return period, returned items cannot be accepted, unless covered by manufacturer's warranty. We will repair as much as possible on site however in exceptional circumstances products may have to be returned to the manufacturer of distributor.
For repairs/replacements under manufacturer’s warranty for any item please download a ML&S return form from the link above and return to ML&S with the faulty product.
International Warranty information
Warranty service for items we sell is available in the U.K. only, unless otherwise noted. It is your responsibility to pay freight for returned items to the U.K. and back to you for desired warranty coverage. All of our NEW products come with a minimum 12 month warranty, (Yaesu & Icom 24 months), with up to 90 days on second-hand equipment. Items returned for service must state "returned goods for repair" on the return air waybill or U.K. import customs duties apply and will be added to your invoice. For more info about returning items please contact our customer help desk, [email protected]