Full power transmission will crash and restart itself

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  • Updated 5 days ago
6600M at 40 meter band,
when ATU bypass, if tune, SWR is 2.8.(My antenna tuner MFJ-998B is not working very well)

Full power transmission ,6600M will crash and auto restart.

when 6600M ATU open,everything is OK.

Is this normal?
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BG6SNJ

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Posted 1 week ago

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Michael Walker, Employee

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Official Response
No, it is not normal.  

Items to test:

  • Run the same test, but transmit into a dummy load - this will help eliminate RFI as the problem
  • Measure the power supply voltage at the radio to make sure you are not having a voltage brown out.
Those are the 2 majout items that can cause the radio to crash and reboot.

Mike
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Michael Walker, Employee

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Official Response
Tim and I discussed this this morning. 

The RS-20A power supplies just don't have enough and I went and dug up the specs.  The RS20A is a 16A continuous supply and 20A ICS.  We need closer to 25.  

This is why the SS-25 is a 20Amp continuous and 25A ICS (Intermittent Communication Service - aka - peak).

If you have to run an RS20A or similar, go into the the radio and set your maximum TX  power to about 80 watts until you have a chance to upgrade your power supple.  This is in the TX menu.

Mike