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I just ordered a Retevis RA87, anyone run one?


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On 6/22/2024 at 11:54 AM, SvenMarbles said:

It’s purely speculative on my end, but this issue REALLY sounds like whatever power source you’re using cannot supply adequate amperage to the radio while keyed on high..

Yes you are correct. My power supplies were both underpowered at around 5 amps 7 amp peak. Now I just need to find a cheap power supply.. I have been looking for 20 to 30 amps... what would be the ideal amperage?

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8 hours ago, WSDI867 said:

Yes you are correct. My power supplies were both underpowered at around 5 amps 7 amp peak. Now I just need to find a cheap power supply.. I have been looking for 20 to 30 amps... what would be the ideal amperage?

A 100 watt radio needs about 23 amps.  A 50 watt radio needs about half that, maybe 12-15 amps.  
 

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  • 2 weeks later...
On 6/24/2024 at 8:49 AM, Borage257 said:

You can buy either a 12v or 15v. Both have adjustment screws to dial in your voltage.

 

image.png.d11ce52255b6cf6bd72bd65a194c77dc.png
 

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Thanks this power supply works great for my Retevis RA87 40watt GMRS radio. No more power failures. The power supply is quiet and hasn't needed to run the fan yet. 

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1 hour ago, WSDI867 said:

Thanks this power supply works great for my Retevis RA87 40watt GMRS radio. No more power failures. The power supply is quiet and hasn't needed to run the fan yet. 

You’re welcome! Pair it with a good LiFePo4 battery (20ah or more) and charger for emergency comms too!

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