XTL 2500 Power Cycling with antenna connected

[zachzimmerman]

Trying to save a XTL 2500 800 mhz from the grave. Unit runs great without an antenna, however when you connect an antenna to the unit, it goes into a power cycle loop. I have tried different cables; I'm out of ideas?? Anyone have any suggestions or ran into this issue?

 

[mmckenna]

Is this on the bench or in a vehicle?

 

[zachzimmerman]

Is this on the bench or in a vehicle?

Bench

 

[mmckenna]

Is your power supply providing enough current?

Grounding issue?

 

[KevinC]

It sounds like once the antenna is connected it receives a control channel and tries to register to a trunked system and the P/S can't handle the current draw.

 

[zachzimmerman]

Is your power supply providing enough current?

Grounding issue?

I was thinking it could be a grounding issue, let fix that.

 

[zachzimmerman]

It sounds like once the antenna is connected it receives a control channel and tries to register to a trunked system and the P/S can't handle the current draw.

I checked the numbers on my P/S, 2.5 Amp 12V Converter w/ 13.8 Volt DC 115V AC 50 Watt Power Input. Never ran across this issue before.

 

[KevinC]

I checked the numbers on my P/S, 2.5 Amp 12V Converter w/ 13.8 Volt DC 115V AC 50 Watt Power Input. Never ran across this issue before.

If it's attempting to transmit 2.5 amps won't be enough. I still stand by my it's trying to register to a trunked system.

Where did this radio come from?

 

[KJ4DHF]

XTL 2500:

 

[zachzimmerman]

If it's attempting to transmit 2.5 amps won't be enough. I still stand by my it's trying to register to a trunked system.

Where did this radio come from?

Its a radio from a local fire department, that doesn't have much funding, so I am trying to get it back up and running for them. Let me throw it on another bench and see if that will fix the issue.

 

[NVAGVUP]

Better have it in a dummy load. If you are hooking it up to an antenna, this is classic radio registration/affiliation to a trunked system. System admins take great joy in bricking radios such as this. (And yes, your power supply is not capable of supplying enough current while radio is transmitting/aka registering to trunked system)

 

[mmckenna]

Yeah, grounding probably not the issue.

Current/voltage starvation, yes. If it's on a trunked system, it's going to try to connect, so it's going to transmit. A 2.5 amp power supply isn't going to cut it.

And I agree, connect it to a dummy load, you don't need to be annoying the trunked system like that for most of your testing.

 

[ultrajv]

You cant test those radios on a 2.5 amp psu. Your workshop or test facility dosnt seem set up for transceivers or RF. They are going in to transmit and rebooting due to lack of current.

 

[zachzimmerman]

Yeah, grounding probably not the issue.

Current/voltage starvation, yes. If it's on a trunked system, it's going to try to connect, so it's going to transmit. A 2.5 amp power supply isn't going to cut it.

And I agree, connect it to a dummy load, you don't need to be annoying the trunked system like that for most of your testing.

Up and running, pick up a 30 amp test bench, no problems now. Thank you.