The speaker does not mute. It is most likely a programming issue or a channel issue. Since you see the green light, it means the two radios are on the same frequency. In order to "hear" the talking radio, you could push the squelch button (ugh), but also get the squelch sound. You need to program the "tone" on the same frequency, also called a channel. The easiest way is to "read" one radio, then "write" to the other. This way, you know both radios will be exactly the same. I am assuming you have the software and cable. If not, it is impossible for them to "talk" to each other.
Answers & Comments
The speaker does not mute. It is most likely a programming issue or a channel issue. Since you see the green light, it means the two radios are on the same frequency. In order to "hear" the talking radio, you could push the squelch button (ugh), but also get the squelch sound. You need to program the "tone" on the same frequency, also called a channel. The easiest way is to "read" one radio, then "write" to the other. This way, you know both radios will be exactly the same. I am assuming you have the software and cable. If not, it is impossible for them to "talk" to each other.