The part being sold in this listing is the IF Filter board labeled by JRC as the CFH-36 board. It is in excellent electronic condition and worked beautifully during our testing and verification. This board contains the stock filter bandwidths of 2.4 KHz and 5.7 KHz for the NRD-525 and NRD-535 plus two optional filters with the bandwidths of 3.8 KHz and an INRAD 400 Hz. The 3.8 KHz filter is most unusual and we could find nothing on the internet, but this bandwidth is wonderful when attempting to listen and avoid interference from adjoining broadcasters on shortwave spaced 5 KHz apart. The 400 Hz crystal filter by INRAD (International Radio) is labeled as #104 and can still be found for purchase on their website for $174. This filter is perfect for listening to CW communications where you need the narrow bandwidth to select a single signal and eliminate annoying interference from other nearby signals.Please use the Ebay shipping calculator to determine your shipping cost. This cost includes proper packing materials for safe delivery and insurance cost against damage or loss.Those buyers living outside the USA are also welcome to purchase from us. We have shipped to 111 countries during the past 24 years on Ebay and we are happy to ship virtually anywhere in the world. You may use the shipping calculator to determine your shipping cost.Please keep in mind that this cost may not include any import, customs, or VAT fees. If you are uncertain of these costs, we ask you to check with your local post office prior to making a purchase from us. Thank you! Thank you for taking the time out of your busy day to look at our Ebay items!