CDM 1550LS+ UHF No PL/DPL on transmit

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K8COP
Posts: 108
Joined: Sat Dec 15, 2001 4:00 pm
What radios do you own?: Astro Spectra/Harris/XPR7550

CDM 1550LS+ UHF No PL/DPL on transmit

Post by K8COP »

This 1550 was working correctly until I upgraded the firmware to the latest firmware from Motorola. On a channel that uses PL the receiver decodes correctly. There is NO PL transmit. I have checked the code plug and there is the correct PL in both the Rx & Tx.

I saved the code plug before I upgraded it. Code plug was dumped into the radio with no issues.

I have searched the Internet without finding an answer as to what maybe causing it.

Jim, K8COP
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K8COP
Posts: 108
Joined: Sat Dec 15, 2001 4:00 pm
What radios do you own?: Astro Spectra/Harris/XPR7550

Re: CDM 1550LS+ UHF No PL/DPL on transmit

Post by K8COP »

After several more hours I finally found my issue.

Under the option board tab the “Flat Audio” drop down box was selected. Unselected it and reprogrammed the CDM. PL transmit works correctly now.


Jim, K8COP
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