Hello, I tried to research this as much as I could with no finding...
Is there a way I can connect this pa to a mobile radio? Help will greatly be appreciated.. I have a I20r 2 radius m10's as my repeater and would like to turn the m10's down to about 1 watt and run the pa at about 40 watts.
msr2000 pa tle2283b
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Yes, you can connect this unit to the mobile. I don't have my manual handy for the 2283, but, you need to match the output power of the mobile to the input. I know on the 2280 it is about .3 watts (300 mW). Be sure to confirm it with the manual.
You do not want to set the mobile to that low of a power, though. It isn't designed to run at that power, and, may be unstable or generate a lot of heat. Consider running it somewhat higher and use a 50 ohm attenuator to achieve the desired power.
You need to match the input power, and, you can use the RF level control in the amp to set the output power you want.
You can provide DC to the amplifier all the time - switching isn't required.
Is there another piece of information you need? We'll try to help.
Rob
You do not want to set the mobile to that low of a power, though. It isn't designed to run at that power, and, may be unstable or generate a lot of heat. Consider running it somewhat higher and use a 50 ohm attenuator to achieve the desired power.
You need to match the input power, and, you can use the RF level control in the amp to set the output power you want.
You can provide DC to the amplifier all the time - switching isn't required.
Is there another piece of information you need? We'll try to help.
Rob
If the wires you see are the three I mentioned, here are the signals on them:
White/Red -> Apply 9.3 volts on this line during transmit.
Blue -> Supplies power to the exciter tripler stage. (Not needed for you, used for power setback when over temperature or high VSWR is detected)
Black -> Ground
As far as I know, these, plus DC & RF In/Out, are the only ones to/from that amp.
Rob
White/Red -> Apply 9.3 volts on this line during transmit.
Blue -> Supplies power to the exciter tripler stage. (Not needed for you, used for power setback when over temperature or high VSWR is detected)
Black -> Ground
As far as I know, these, plus DC & RF In/Out, are the only ones to/from that amp.
Rob
Ok we're doing good thanks to you. Now for the final question, Do I have to apply 9.3 volts to white and red while transmit? And the ground, would I just connect this to a regular ground or something special?
If so were and how would I get the 9.3 volts? Does it have to be only on transmit or could I apply 9.3 at all times?
I'm only a rookie so THANKS A MILLION for the help!
If so were and how would I get the 9.3 volts? Does it have to be only on transmit or could I apply 9.3 at all times?
I'm only a rookie so THANKS A MILLION for the help!
I don't know whether or not you could idle the amplifier "on". I probably wouldn't, looking quickly at the schematic.
You need a signal from the radio or the controller indicating when you are in transmit. You can then provide a relay, or electronic switch from that. As far as getting the 9.3, it isn't a precision value. You could use a 9v or 10v regulator off the 13.8v supply, for example, or, a transistor, zener and some bypass caps to provide it. It depends on what you have available. The current draw is minimal.
In the MSR-2000 base/repeater station, the 9.3 is provided by the exciter, only when the exciter has been keyed. If you send me your email, I'll send you a JPEG of the simple circuit from the exciter. It isn't much, though. I have no way to host it, so, I can't put it here.
Ground is just common ground for your system. Nothing special. It is intended to be the ground reference for the voltage in and out.
Rob
You need a signal from the radio or the controller indicating when you are in transmit. You can then provide a relay, or electronic switch from that. As far as getting the 9.3, it isn't a precision value. You could use a 9v or 10v regulator off the 13.8v supply, for example, or, a transistor, zener and some bypass caps to provide it. It depends on what you have available. The current draw is minimal.
In the MSR-2000 base/repeater station, the 9.3 is provided by the exciter, only when the exciter has been keyed. If you send me your email, I'll send you a JPEG of the simple circuit from the exciter. It isn't much, though. I have no way to host it, so, I can't put it here.
Ground is just common ground for your system. Nothing special. It is intended to be the ground reference for the voltage in and out.
Rob