I have for sale a Motorola / EMR 526-4-2 BpBr duplexer spec for 435 to 470 MHz from manufacturer. I currently have the high side tuned to 467.550 and low to 462.550. I have pics of unit and service monitor plots. Email dor pics. I'm asking $600.00 shipped conus insured UPS ground. It's hard to see in pic, but one of the low side rods is slightly off axis. The rod itself is not bent the whole mount got slightly off axis during shipping to me. It didn't appear to affect tuning any. DM me with questions or for pics of service monitor plots and close ups of unit or to arrange purchase. I have also had this question posed to me. Yes the bandpass plungers are removable via 3 screws on each plunger and they pull out. Turnaround time on getting it shipped out is typically +/- 3 days.