There is a good chance that you have already watched at least one of the following Youtube videos.
Both show how to make a repeater by linking two radios (usually Baofengs). But I am having my reservations about the wiring they use.
This one has it DEFINETELY wrong.Set up a Baofeng UV-5R Repeater System
Similarly, Miklor’s site shows the same method in detail.
The reason is explained in the second video, but still I cannot get what he is doing with the wiring.
HAM repeater (field expedient) using UV-5R Radios
So let’s take it from the start.
Below is the Kenwood type interface, applicable to most Chinese radios our there (Baofeng and Wouxons for sure).
What we need to use are the MIC +&- and Speaker +&- connections. Watch how the Speaker+ does not reciprocate to the Mic+ pin in a male-male adapter cable.
Original pinout on the left, and the needed pinout for the repeater om the right. Image source: www.miklor.com
And here is a better diagram of the connections.
So we got to make a custom cable, which I did from scratch.
Which works.
Now if you are not up to soldering, there is an easy way to make your custom cable, using these connectors.
2.5mm Stereo Male To AV Screw Connector
3.5mm Stereo Male To AV Screw Connector
Let us know how you did, and if you can understand the wiring on the second video, drop us a line.
Thank you for reading. If you liked it, please help this blog grow by Following and Sharing.
this did not work for my baofeng bf888s radios however it did work with uv-5r radios. any help to get the bf888s working would be great
LikeLike
Sorry, wish I could, but I have no knowledge of the 888s. Season greetings !
LikeLike
I decided to buy a repeater controller to connect the 2 radios, they will work with close range but put a mile between you and repeater setup and the transmit radio over powers the receivers signal. UHF/UHF or VHF/VHF will not work unless you have a duplexer but you can cross band UHF/VHF or VHF/UHF just fine
LikeLike
Any recommendations on how to hook up a standard repeater controller, using COS and PTT instead of the transmitter VOX?
LikeLike
no… Sorry
LikeLike
Found on youtube Relatively easy using a 2N7000 FET connected to the speaker lead.
LikeLike