XPR5550/5350 Hum on Transmit
Posted: Thu Apr 05, 2012 6:50 am
Anyone else noticed the radios transmit a hum on analog channels???
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Re: XPR5550/5350 Hum on Transmit
Posted: Thu Apr 05, 2012 9:12 am
Can't duplicate that here, either in wide or narrow band operation.
Re: XPR5550/5350 Hum on Transmit
Posted: Thu Apr 05, 2012 12:08 pm
Looks like you need to open another case with Motorola, Jeff. Radios must have forgot the words since they were shipped out of Elgin......escomm wrote:Anyone else noticed the radios transmit a hum on analog channels???
One of those days
Dave
Re: XPR5550/5350 Hum on Transmit
Posted: Fri Apr 06, 2012 7:53 pm
Oh the case has been opened, engineers found it was related to the refresh rate of the display from some modulator in the control head that was putting the hum on the TX line. I understand that it will be fixed with a firmware update next month.
Re: XPR5550/5350 Hum on Transmit
Posted: Fri Apr 06, 2012 7:58 pm
What version does yours have in it, and under what conditions were you able to make it happen?
I'm still playing with our demos here and haven't noticed anything too glaring.
I'm still playing with our demos here and haven't noticed anything too glaring.
Re: XPR5550/5350 Hum on Transmit
Posted: Mon Apr 09, 2012 8:44 am
I have that same problem on my 4550 mobile on a UHF ham frequency. The hum will begin when I press the PTT and will stay for around 1-1.5 seconds. Maybe they'll release that update for the older model radios. I'd love to upgrade to a 5550 I just can't due to there not being a remote mount option for it yet.
Re: XPR5550/5350 Hum on Transmit
Posted: Mon May 14, 2012 12:21 pm
Looks like a future F/W release 2.04.00 covers the hum problem. Release notes showed 11MAY2012 on MOL..
EDITED for space...Resolved issues in R02.04.00 product release
Resolved issues are the known product problems that were reported in products releases, but have now been fixed or closed.
Issue Number
Product / Version Found
Impact Description CCMPD01635369 2.00.00 Humming sound on analog channels of MOTOTRBO 2.0 mobiles
CCMPD01576056
2.00.00
When the Channel Dial Feature is enabled and the Channel is changed from the Home screen, the radio will power up on the previously used channel rather than the Channel set from Home screen after the next Radio Power cycle. CCMPD01582326 2.00.00 The Mobile Numeric Display Radio LED used to indicate Channel Change mode may blink at a faster than usual rate when a Call is received concurrently with a Channel Mode change. When radio user presses the dual Volume/Channel knob on the Numeric Mobile to change the channel, the 7 Segment LED will blink to indicate that the radio is in Channel Change mode. If then at the same time the radio receives a call, the blinking rate of the 7 Segment LED will become faster. After the 10 second channel change mode timer times out or the call ends, the 7 Segment LED will return to the normal blinking rate.
CCMPD01559839
2.00.00
If the selective call hang timer is selected to zero (invalid configuration), then the radio's menu response will freeze. CCMPD01580885 2.00.00 Radio is able to key up >60 seconds even when codeplug Time-out-timer equals 60 seconds
CCMPD01583282
2.00.00
Incoming call makes screen freeze when VOX is ON
CCMPD01584780
2.00.00
Unable to decrease volume level when SJ board is attached to the radio
CCMPD01593262
2.00.00
Radio does not unmute on silent emergency with voice mode