CDM 1550 LS+

[jonvenusti]

Good evening,

I have a CDM 1550 LS+ . I just got it today from eBay. It is "NIB" from a fellow who was unloading his late Grandfathers Motorola Store. My buddy has the programming software and he programmed L.E freqs for my job and local ham repeater freqs. one of my problems is when the radio is scanning, frequencies coming in have this thumping sound its quick in sequence. it sounds like thup thup thup thup thup thup thup as long as the transmission is coming through. next problem is the radio is acting like there are no pl tones programmed. for example i have a local pd in with the correct tpl freqs and im getting all kinds of mixed transmissions from god knows where being here next to nyc. i use my motorola ht1250 as a monitor with the same settings plugged in. the HT hears what it is supposed to and the CDM is hearing all kinda of riff raff with the thudding sound if scan is enabled.


Thanks ahead of time,

Jon

 

[svfd17]

The thumping is the priority channel feature, if you disable it it will stop.

 

[jonvenusti]

i just figured that out, thank you so much. i am still getting these annoying other frequencies coming through on my l.e freqs... example i have 460.200 programmed with a pl of 88.5 and it is not filtering out the other freqs

 

[jonvenusti]

another thing i might add is that when the radio is recieving the little speaker icon comes up on the screen i know this usually means sticky monitor but when it is on you are unable to shut it off

 

[Thunderknight]

Perhaps you have a mike hang-up clip problem.

 

[KG4INW]

Or, if it only happens when you're scanning, you need to go into the scan list general settings window and make sure PL Scan Type is set to "Priority and Non-Priority Channel".

 

[jonvenusti]

it happens when you take the radio out of scan mode. also i am using the radio on a bench test and i touch the mic to the battery ground and it does nothing when it is receiving the wrong freq

 

[jonvenusti]

Video of problem. Frequency set is not whats being heard. As you can see, little speaker logo will not go away.

www.youtube.com/watch?v=UyW0YWR_R6M

 

[jonvenusti]

it was the mic hangup..... you cant just touch the exterior metal its the space between the hangar and the radio that has to be grounded.... thanks for your time everyone ! i hope this helps anyone else that runs into the same issue. i must say though, if i am ever bored im going to leave the mic off the hangar. last night they had some guy burning down a house and then this morning people getting shot at in some god forsaken ghetto