It depends on how the parts situation goes. The parts I have in inventory are in varying quantities. There are other parts that I still need to buy. If I could, I would purchase all the parts necessary. I don't really want to list it out here for obvious reasons. One of the limiting factors is the MCU. Before I started this new design, the MCU for the P25RX had been long gone due to the shortages. I identified another MCU part with the same core, but a different package (BGA). This is the 'V' version of the part (480 MHz) in a BGA package. At that point there were several thousand available. I purchased 10 for testing and designed the pcb. After ordering some prototype boards, the part that appeared nobody was buying, disappeared from one vendor. The next day I purchased some more on credit from another vendor that still had thousands in stock. Then those were all purchased by someone. There are no more MCU parts anywhere. I have what I have. Hopefully it will be enough to get through this shortage period. That is the story for one part.
As mentioned earlier in the thread, the P25RX-II has a wider, contiguous tuning compared to the P25RX. It also has a highly selective IF filter external to the silicon. The form factor is the same for now and will hopefully stay that way. I'll have more details later.
-edit: I should have mentioned that this design has already been through several revisions and prototype builds now in an effort to achive the best possible performance. The receiver that was shipped yesterday is a pre-production unit, but is functionally and electrically equivalent to what I expect will be the final production design.
