![]() Sampling Rates: 48, 96, and 192 KHz (16 or 32 Bit)ĭownload and try the full functional 30 day trial of MRP40-SDR version for Soundcard IQ inputĭownload and try the full functional 30 day trial of MRP40-SdrPlay-RSP1 version. MRP40-SDR also can transmit morse signals via I-Q output. Plus a tuning front end for incoming I-Q Signals ![]() This program consists of the well known MRP40v64 MRP40-SDR works with external SDR transceiver hardware that provides IQ-input signal like Softrock, KX3 or similar I have the KPA500 RADIO setting on K3 (or it wouldn’t work at all!) but the slowness of switching seems to be an eternity when I’m in the heat of operating.MRP40 Morse Decoder for I-Q input signals: When I move the BD to between the KX3 and the PX3, then the PA MODE will stay on, but the AMP and Tuner usually will not switch bands until about 30 seconds or, if I turn the Tuning knob, it will switch in about 10 seconds. But with the BD inserted in the line, the KX3 thinks the RS232 line is not connected, and therefore switches the PA MODE to OFF. This normally will happen when the KX3 does not sense the RS232 cable making the complete circuit from KX3 –> PX3 –>BD –> Adapter –> KXPA100. The only problem is, the KX3, when setting the PA MODE to “ON”, resets it to “OFF” after about 5 seconds. Love the ability to auto switch the bands on both the KAT500 and the KPA500 when used with the KX3! But I do have a slight problem: I have the BD in line between the PX3 and the KX3-to-KXPA100 Adapter (yes, I drive the KPA500 with about 23 watts from the KXPA100!). If you are interested please send your info via this post and I will put you on the list. I need at least 9 on the list to do the group purchase. Orders placed between and will be shipped on. Pricing is $75 which inludes US postage to US locations. I don’t drill out the tiny front panel as I do not have equipment for the D sub so if you want one you will need to do the front panel yourself.Ī few have been sold but I still have a number available for sale to those interested. My miniumum board order had to be 10 boards. When I got home I decided I wanted to have a more robust version so I did a ‘board’ layout and improved the power supply circuit. I originally built this up on a wire bread board and used it on my Marshal Islands trip to drive my automatic band pass filter. The KX3 band decoder uses a tiny postage stamp size Arduino and the same exact driver chips as is used inside the K3. You can power this device with anything from 8 volts to 19 volts (safe for same battery/power use as the KX3) There is a 15 pin compact female sub D connector, just like on the back of the K3. It has two PC (3mm stereo) connectors so you can plug into your KX3 and your PC (you don’t need the PC if you have KX3 in AI (auto info) mode). The KX3 band decoder fits inside of a 3″ by 6″ by 1″ box. Owners manual here and Theory of Operations here It uses the same band signal drivers and coding as the K3 and shows up on the same exact pins! This allows you to connect any of your ham equipment that you can use with a K3 band selection data to the KX3! It sniffs your KX3 serial PC connection for band information and generates the band signals found on the 15 pin K3 ACC connector. Well you can! I designed a KX3 Band decoder package. ![]() ![]() Are you a KX3 owner? Ever wished you could squeeze band info out of your KX3 like you can on the K3? Control big amplifiers, automatic antenna tuners, band switches?
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