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EVX-539. Radio Check function doesn't work correctly

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Aug 15, 2014
I have ICOM IC-f60V, Motorola EX600 and Vertex Standard EVX-539.
I have recently got the EVX-539 and can't set up the MDC1200 signaling to work properly on this radio.
The issue is that when I activate the Radio Check function on the ICOM IC-f60V or Motorola EX600 to check the EVX-539, they don't get answer from EVX-539. However it works well backwards. I can perform the Radio Check function from EVX-539 to the both ICOM IC-f60V and Motorola EX600 radios. It seems like the EVX-539 receives the call signal from other radios but doesn't respond back. I tried plenty different settings in MDC1200 Common and MDC1200 Call sheet. Nothing helped.

Also when I activate the Call Alert function from ICOM IC-f60V or Motorola EX600, the EVX-539 radios "beeps" but I can't see on the ICOM or Motorola displays whether my request reached the EVX-539 or not.

Meanwhile the MDC1200 signaling between ICOM IC-f60V or Motorola EX600 works flawlessly. I can perform the Radio Check function between ICOM or Motorola radios as it should be. All three radios can communicate among themselves with no issues.

For all radios I made the same MDC1200 parameters except Call ID and Primary ID which are unique.
For EVX-539 the MDC1200 Common sheet the Radio Check Decode function is enable.

Any ideas what is wrong? Settings? Firmware? Other radios?

P.S. The EVX-539 has FW Ver. CPU/DSP 3.20/3.14
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