Thanks for posting.
Your newly purchased boat has a NavNet 1 system. The RDP139 means it is a 10.4” display. The radar could either be 2.2kW or 4kW if it is a dome, or if it is an open array it could be 4kW, 6kW, or 12kW. The original sounder module would have been either the BBFF1 (600W/1000W), or a BBFF3 (1kW/2kW/3kW). Depending on when the sounder module was replaced it could now be a DFF1 or a DFF3.
The cartography used would either be C-MapNT from Jeppesen or Navionics Classic.
This would be indicated on the chart draw.
1-Yes, this system is still relevant in today’s technology. In fact many of the system components are still used with the NavNet vx2 products that are still offered for sale. However, you might want to check on the age of your chart cartridge and update it if necessary.
2-If you send the display, (RDP139), to our Camas, Washington facility we could do a thorough check out and update the software if needed. We will contact you with an estimate for any repairs.
3-The sounder problem could be something as simple as programming or a loose connection. There is a status light on the sounder module that will help narrow down the issue. A local authorized dealer would be able to help you with that or you could call our tech support department while you are on the boat for assistance. However a local authorized dealer would be able to eyeball all the parts to help you determine what components you actually have installed. Our dealers are all listed on our website by clicking the “Find a Dealer” link in the upper right corner.
4-There is definitely value to your current system. If you wanted to upgrade to our current NavNet vx2 system all that would be needed is to replace the RDP139 display for a RDP149, which is the vx2 display. All the peripheral components are compatible.
Please let us know if you have any other questions or we can be of further help.