Trying to remove Loran-C, but it is shutting down my radar...

[SeanF45]

Not sure if anyone can point me in the right direction here, but i am picking away at tasks on a 1972 Bell Boy LV2500 that I picked up. It has a bunch of vintage electronics, some of which I want to remove or replace... it has a Furuno radar that I would like to keep, but I tried removing the Texas Instruments 9900 Loran-C receiver, and unplugging the power to that shuts off the Radar.... i dont even see how they are connected... the power cable to the radar display goes straight from the back of the unit to the buss bar. (Although, there are 3 wires, and one doesnt go to the buss bar)

Anyway, if anyone has run into this, please let me know what i need to do.... id rather not leave a huge obsolete box cluttering my view.

 

[alldodge]

Don't know but similar issue with Buddies old Raytheon system. His system has lost GPS signal and has yet to figure out where, but now radar doesn't work.

 

[SeanF45]

Solved, if anyone cares, lol... figured out that the helm buss bar was not actually directly reaching the negative battery terminal.... it was routing through the ground terminal on the loran-c, so if i disconnected the ground or the power(specifically the negative wire) the whole helm was losing power (well, the accessories on the buss bar at least).. i was only noticing the radar, lol

 

[alldodge]

Great find thanks

 

[tphoyt]

It’s always fun trying to figure out what other people have done in the past. Glad you found it.