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Sb520 low receive

David1dogg

New Member
Aug 1, 2026
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Is this a common problem? Transmits great but receive is very low. I have a 139xlr with 858 board also. Is this common for these? Is there a fix for it and if so, who can do it?
 

Is this a common problem? Transmits great but receive is very low. I have a 139xlr with 858 board also. Is this common for these? Is there a fix for it and if so, who can do it?
It sounds like an alignment would be needed, any reputable cb shop can do this. Avoid any additional mods offered unless it's a service bulletin, some places like to upsell useless or disastrous modifications .

Rebooting and properly configuring RX according to the instructions will help here.
You may be referencing another platform altogether. I believe the op is referring to the Robyn SB-520D radio.
 
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