FT-450D not transmitting with microphone

Question

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?

How is the FT8 audio fed into your trx? What happens when you press the PTT switch on your hand microphone? — henryflower, Oct 12 '20 at 08:29

score 1 · Answer 1 · answered Oct 13 '20 at 10:33

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Try changing mode from DATA-USB to USB/LSB.

answered Oct 13 '20 at 10:33

tekk

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I change the mode to USB/LSB with no effect. – Lyndon Oct 13 '20 at 14:09
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Hello and welcome to ham.stackexchange.com! – rclocher3 Oct 13 '20 at 15:24

score 1 · Answer 2 · answered Oct 17 '20 at 20:40

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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.

answered Oct 17 '20 at 20:40

Lewis Duffing

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Hello Lewis, and welcome to ham.stackexchange.com! – rclocher3 Oct 19 '20 at 13:37

score 1 · Answer 3 · answered Jul 15 '22 at 00:54

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:

Yaesu FT-450D settings

Yaesu FT-450D solution 2

I'm thinking that your trouble is merely an unintended setting in the menu system.

FT-450D not transmitting with microphone

3 Answers3