W3 Shuts off on TX

mtr12222 · Post by **mtr12222** » Wed Apr 04, 2007 3:18 pm

I am having a problem with a high power W3 with siren installed. When the PTT is pressed the radio does not TX and goes through the Self Test.

I have changed the control head, swaped radio decks, and changed the ignition sense lead all with no success. The siren works fine and the PTT works for PA mode.

I checked the radio positive lead fuse and ground and all connections seem ok. By all indications this looks like a power problem... any ideas.

Thanks for the help.

Bruce1807 · Post by **Bruce1807** » Wed Apr 04, 2007 3:31 pm

swap the siren lead with the radio lead.
If the problem reverses check the power conection.
Also check the power connectors at the radio, sometimes the female opens up.
Stick a meter at the i/p to the radio and key up.
If the voltage drops, keep looking for a bad crimp or similar.

mtr12222 · Post by **mtr12222** » Wed Apr 04, 2007 3:38 pm

Swap the siren power with the radio power?

Measure power across the power lead at the radio with a meter?

I'll check the power connectors on the radio. Thanks for the advice.

Bruce1807 · Post by **Bruce1807** » Wed Apr 04, 2007 3:46 pm

Swap the siren power with the radio power?
Are they not the same power connector

Measure power across the power lead at the radio with a meter?
I should have said volts with a multimeter

mtr12222 · Post by **mtr12222** » Wed Apr 04, 2007 3:54 pm

The siren power is a 14 or 16 gauge lead. The radio power is an 8 gauge pos. and neg. lead with a large connector. I am going to try a new power lead directly from the battery to see if that fixes the problem, if it does I know to focus on the ground and crimp connections.

Trans Tech · Post by **Trans Tech** » Wed Apr 04, 2007 9:46 pm

Sounds like lack of power.

jmr061 · Post by **jmr061** » Sun Apr 08, 2007 7:54 pm

Did you get this corrected?

Jason