Repair | P25.IO

# Quantar TTN4094 SCM NO Modulation Repair

Posted on January 5, 2017, updated on January 5, 2017 by admin

If your repeater keys up without modulation or very low modulation, either in P25 or analog, it might be because U306 on your SCM is dead. This seems to be a common fault on the TTN4094 board, I have heard about this issue from a lot of P25 enthusiasts and had this issue more then […]

# Quantar Onan Power Supply Repair

Posted on January 3, 2017, updated on January 4, 2017 by admin

A while back one of mine low power Onan power supplies failed, but I was able to figured it out and bring it back into operation. From what I read on the net, it seems that the Onan’s don’t have the best reputation, so I will share my experience to help you guys bring them […]

# Quantar Exciter Repair

Posted on September 7, 2016, updated on January 4, 2017 by admin

I repaired a few Quantar repeater with broken exciters. The fault condition is most of the time the same. If you power the Quantar up, all lights come up green and when you key up the repeater the red PA Fault LED turns on immediately. However I also heard reports of an more intermittent fault whit power changing from high […]