I've been using FT8 on my Yaesu FT-450D for quite some time. I decided to try to talk on phone frequencies and discovered neither one of my mics will transmit. My mics are the original hand mic and a Heil headset. I've tried all bands and cannot transmit on any of them. I had successfully talked on the radio but not now. The only change I have made was to change from a switching power supply to a linear power supply. The radio will not transmit on either supply. It only transmits in digital modes. Does anyone have any ideas?
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2$\begingroup$ How is the FT8 audio fed into your trx? What happens when you press the PTT switch on your hand microphone? $\endgroup$– henryflowerOct 12, 2020 at 8:29
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1$\begingroup$ Hello Lyndon, and welcome to ham.stackexchange.com! $\endgroup$– rclocher3Oct 12, 2020 at 17:19
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2$\begingroup$ Microphone gain accidentially set to 0? $\endgroup$– BurnOct 16, 2020 at 17:20
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3 Answers
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Try changing mode from DATA-USB to USB/LSB.
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1$\begingroup$ I change the mode to USB/LSB with no effect. $\endgroup$– LyndonOct 13, 2020 at 14:09
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1$\begingroup$ Hello and welcome to ham.stackexchange.com! $\endgroup$ Oct 13, 2020 at 15:24
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My Xiegu G90 radio has to have the output from the 8-pin connector in the back set to line instead of mic for it to transmit a digital signal into my SignalLink sound card. Could it be that the FT-450D has the same type of settings. which may need to be changed back again from line to mic to send SSB or voice.
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$\begingroup$ Hello Lewis, and welcome to ham.stackexchange.com! $\endgroup$ Oct 19, 2020 at 13:37
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It appears that the 450 has a number of complex settings that may well be the source of your problem. Here's some feedback from other owners who've learned some interesting features on their radios:
I'm thinking that your trouble is merely an unintended setting in the menu system.
