Suddenly no reception on antenna one and no transmit on either, infinite SWR on TX

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  • Problem
  • Updated 7 months ago
Suddenly I had no reception on antenna 1.  I switched my antenna (I only have one) to antenna 2 and now I had RX.  BUT when I hit the Tune function, the SWR's went off the chart and I had to shut down the radio.  I rebooted it and then tried to Xmit on antenna 2.  SWR's off the chart again.  No signal at all when I attach my antenna to Antenna 1.  I had not disconnected the antenna at the pass through, this just came out of the blue.  Any ideas? 

The radio is a 6300 and the software is latest, 2.4.9.
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Russ Locke

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Posted 7 months ago

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Michael Walker, Employee

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Hi Russ

A few things.  

First, can you check the antenna with another device like an analyzer or another radio?  

Can you do an SWR test to a dummy load?

If you don't have any of the above, then I would export your profiles to save your settings and then do a radio reset.  And then, test again.

If that doesn't work and you have confirmed the antenna and all jumper cables are ok, then it would be time to open a support ticket.


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Mark WS7M

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For the receive part it could be a blown ESD diode but I don't think that affects TX.
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Zack Schindler - N8FNR

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I had some RX weirdness like this earlier in the week, Saved my profiles, did a reset and everything was good.

Zack N8FNR
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Russ Locke

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I found the problem, mostly operator error (the first place to look.....)  Thanks for the suggestions.
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Rory - N6OIL

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Details, please.
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Frank Smith

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I have a similar problem. Could you  share your solution?

Frank Smith, WS1MH