Flex 6300 Transmit Audio Issues

  • 3
  • Problem
  • Updated 4 years ago
  • Solved
I'm not sure if this is a transmit problem with my Flex-6300?    I've only owned the radio for two months now so I'm a newbie when it comes to SDR.    On SSB I honestly can say I'm not happy with transmit audio so far.  I've gotten  poor audio reports saying I have a faint echo/raspy sounding audio and I've listened to the transmit audio myself  through other receivers and can confirm the poor audio quality.  It's not even close to my prior rig-FTDX-3000.  I don't run any amplifiers.   I've read through the "How to build a quiet station" info and have practiced and put to use all the things that can possibly cause RFI issues.  I have an excellent ground system and all my cables to and from the radio have mix31 ferrite on them.  It doesn't matter if I use the FRS provided hand mic or a high end Heil PR-781 or PR-22 the results are the same.   I've also tried putting a W2IHY I-box in line between the mic and the 6300.  Nothing changes.   I'm running the latest available version of SSDR. 

On the digital side using WSTJ-X  the radio performs great and I don't have any problems with stations not decoding me but I do notice some spikes which I'm not sure are normal during transmit.   I've provided a screen  shot of my station transmitting a JT-9-1 signal at aprrox 15 watts.  Do others running WSJT-X see these spikes during TX as well? 

I've noticed a few others comment on this issue with the 6300 audio and wonder if I should send the rig in to Flex for a look over?  Any advise would be greatly appreciated.

Cal Spreitzer/N3CAL
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Cal Spreitzer

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Posted 5 years ago

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Don Stefanik

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Well I spent a good amount of time listening to recordings like suggested. I almost got tired of hearing myself. hihi. Anyways I kept going back and forth with the settings and I think I pretty well have it as good as I can sound!!

Hear are my final settings.

63/-10  125/-10  250/+2  500/-5  1k/0  2k/+8  4k/+8  8k/0

low cut 100    high cut 3000   mic gain 55   and I now stay back from the mic about 2 to 3 inches.

 I used to have my lips right on the foam covering the mic. I could hear that it made it sound a little more bass.

So all in all thanks to all the help guys!!