• To anyone looking to acquire commercial radio programming software:

    Please do not make requests for copies of radio programming software which is sold (or was sold) by the manufacturer for any monetary value. All requests will be deleted and a forum infraction issued. Making a request such as this is attempting to engage in software piracy and this forum cannot be involved or associated with this activity. The same goes for any private transaction via Private Message. Even if you attempt to engage in this activity in PM's we will still enforce the forum rules. Your PM's are not private and the administration has the right to read them if there's a hint to criminal activity.

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XPR4550 UHF, poor RX

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Anderegg

Anderegg

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Having very poor RX on analog RX. Put in an RX only repeater frequency, and it is high signal strength, but it is cutting in and out, audio not wanting to stay consistent. A cheap scanner on an 800MHz antenna picks up the same signal loud and clear, 10x better.

The channel is programmed for 12.5KHz, but I think the old non part 90 transmitter might be 25KHz. Would that cause the radio to receive horribly, audio clipping and cutting out at full signal, or am I more likely looking at a rig that lost correct tuning values or drifted?

Paul
 
KG4INW

KG4INW

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Putting it on a calibrated service monitor will definitively answer your question. Do you have a wideband EID? Wouldn't hurt to reprogram to see if that's the issue but it could also be that the oscillator has drifted. Does it behave the same on other signals?
 
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Anderegg said:
The channel is programmed for 12.5KHz, but I think the old non part 90 transmitter might be 25KHz. Would that cause the radio to receive horribly, audio clipping and cutting out at full signalPaul
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Yes. Having the radio in the narrow band mode trying to receive a wide band signal would cause this. Set your radio to wide band & try to receive the same signal, & see what happens.
 
Anderegg

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Time for the fun of requesting the EID from Moto! The radio operates in the Part 90 exempt 450-451mhz media block, so hopefully they dont give me any grief.

Paul
 
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