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Your cart is empty. The K9DP QRP broadcast interference (BCI) filter allows QRP (low-power) amateur radio operators to reduce or eliminate unwanted broadcast interference in their signals. Primary designed to help HF radios and receivers that struggle with front-end overload from AM broadcast stations, compatible with Xiegu X6100, X5105, G90, G106 and SDR receivers.
This lightweight and portable filter is ideal for use in field operations such as Parks on the Air (POTA), Summits on the Air (SOTA), and Field Day. It has been tested at power levels up to 20 watts with SSB, CW, and digital modes, and its small size and low weight make it easy to take with you wherever you go. Measuring only 3.4 inches (86mm) in length and weighing just 30 grams, it's a convenient choice for on-the-go operations.
Overall, this filter is a great way for radio operators to enhance their radio’s performance and improve their communication experience. These filters have a 50Ω impedance and are symmetrical, so it's not important which end is the input or output.
Caution: High SWR can damage the filter. The filter should be inserted inline between the transceiver and tuner, rather than between the tuner and antenna. If your radio has an internal tuner, be sure to use a resonant antenna or an antenna with a matching circuit, such as an EFHW (end fed half wave), in combination with the filter.
IndyMatt
Reviewed in the United States on June 3, 2024
Everything is labeled on the board and easy to put together! If you know how to solder it’s no problem!
The Rs
Reviewed in the United States on June 13, 2024
Easy to assemble, inexpensive, works great! All I could ask for!
Kindle Customer
Reviewed in the United States on December 5, 2024
I live near quite a few broadcast stations,,honestly I didn’t know I had a problem till I built this and hooked it up my hf rig is nice and quiet (xeigu g90 and g106) very pleasant surprise good luck 73
Lonnie J. Whelan
Reviewed in the United States on November 7, 2024
I don’t presently HAVE any AM broadcast interference but I bought and built two of them to keep in my QRP kits just in case. This is a really easy kit to build. I highly recommend them. Now if he had kits for when I’m using one of my 100Watt rigs!
R. Scaffidi
Reviewed in the United States on January 24, 2024
I bought this kit to use with an Xiegu X6100. The kit was easy to assemble, but if you've never done any soldering, you might want to consider a pre-built. It's very small and on a circuit board. The instructions are very clear and include pictures. I tested it on a strong signal only a mile or 2 away. It didn't wipe it out completely, but knocked it down considerably. A 50KW station 30 miles away was completely knocked out. I also had a question and emailed the seller and he answered me back within an hour. If your radio is experiencing front-end overload, this is your answer. 2 thumbs up from me.
Wayne's Reviews
Reviewed in the United States on January 20, 2024
A nice quality kit that was a pleasure to buld!
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