Surecom Mcbazel SR-628 Cross Band Duplex Repeater Controller with 2 x K Plug 46-K Cable for Kenwood PUXING WOUXUN QUANSHENG

It works well, but to get it to work correctly, you will need to configure it. Here's what I did:1. Someone on youtube posted a video where his SR-xxx repeater would only work if he was talking into his radio. I had the same issue. I noticed the SQL setting (code ##55) in the documentation and set the squelch level on the repeater as low as it will go (1). Out of the box, it's set at 5. This fixed the problem and the repeater now works perfectly.2. Obviously, change the password.3. I changed the repeater mode (code ##612). For my purpose (ammo can repeater), I could have gotten by with the SR-328, but for the couple of extra $$, it's not bad to have the cross-band capability should the zombie apocalypse ever come to pass.It seems like a pretty decent unit. Simple and straight forward. It does what it's supposed to do. It doesn't have too many lights that burn power needlessly, yet it has enough to communicate the necessary codes back to the user.Time in the ammo can will tell.

I tried to make a repeater with 2 radios. I tried to use 3 different connectors but could never get them to function properly all the time. I bought this, plugged the radios in and BOOM! Worked exactly as expected and continues to work properly.

For those who say you can't build a repeater with two UV50X2 Btech radios and a Surcome repeater controller, you are wrong. This device worked perfectly out of the box, so clear and easy to operate.

Does not activate transmitter radio (b). Does not work. Instructions do not make sense.

I incurred some spurious operation and resolved it by programming the baofeng radios with CTCSS encode and decode on the radios transmit and receive. That seems to have cleared up the problem.

Can’t be any easier for mobile emergency comms! Just plug in and go! The built in battery is great when you need it but can also be charged/powered via USB with a battery bank etc! HIGHLY recommend as an addition to your emergency comms equipment!

Using to extend base antenna coverage throughout my property.

The SR-628 may have several unacceptable product defects and design limitations. It's hard to tell given much of the SR-628's "documentation" is incomprehensible and overall inadequate. The documention, alone, is sufficient to disqualify the SR-628 from consideration.After gleening what information I could from the documentation along with much trial and error, I was able to verify, using the DTMF command ##0, the SR-628 was receiving audio at a level of 3-4 LEDs and correctly decoding characters # 0 1 2 3 4 5 6 7 8 9.After that, I was able to verify on my bench the SR-628's primary function worked using two HTs connected it tuned to different channels.Attempting to use the ##612 to switch to SR-328 mode did NOT result in LD3 blinking 4 times but does work.Attempting to use the ##613 to switch to SR-628 mode did NOT result in LD4 blinking 4 times. but does workAttempting to restore SR-628 to standby using ##1-8888 had no effect. A full reset of the SR-628 was required.There is no documented way to determine the SR-628's current SQL setting to verify its value was successfully changed using the DTMF ##5 command.The documentation's "Trouble Shooting" section describes audio too high or too low as a cause of DTMF command radio keying problems, but provides no method to determine which is the case or how to set the volume to the correct level.Lastly, I did field testing and found as distance decreases the receiving radio's audio, while still audble, SR-628 will not key the transmitting radio. Maybe this can be fixed by modifying the SR-628's SQL from default 5 to 1 or 2?