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Please just make a video and post it as private on YouTube. Folks can then see exactly what’s going on and broach a comment. De Spence G5STO Sent while portable! please excuse typos.

Great, if power output is ok on FM and CW then your PA is working. Do you have the same low SSB on VHF? Where were you feeding audio in to the rear? Which port on the back? Finally, what test

Very low audio, so SSB on HF is at much 3W. Powers on other modes all fine, AM, FM, CW, but theres no audio noticeable on FM or AM. Just happens on HF.

Further up the discussion he stated 100 watts FM on HF, so PA is fine. Perhaps the OP could clarify if any power on AM, CW and FM on HF, just so we are not getting

So no power in HF in FM mode? Then the fault is in the HF PA section, Q3002, or the preceding BPF. -- Greetings from Erik Rothuis (PA2ER), Terborg Netherlands.

Correct. The modulation in HF is very very low, talking very loud may give 3 or 4 w

Correct me please if i am wrong. The TS says that there is no modulation in phone and in digital mode, on HF? There is modulation on 2 meter, and 70 centimeter, in all modulation modes, digital and

Receivers ok. Problem is on HF, all bands. Audio input management? is indepent for HF, VHF, UHF, so I guess the module that handles the HF audio is bad somewhere. Sadly I dont have a signal tracer.

Does the receive signal strength also increase?? Is it the same on every band or only one band.? It could be dirty/arced relay contacts or a relay with bad solder joints (common on most HF rigs of

First of all check your powerkabel, connectors, fusses, and fuse holders, for bad contacts. -- Greetings from Erik Rothuis (PA2ER), Terborg Netherlands.

Late to the party.? So from the sounds of it you have no modulation or very little in any mode.? SSB, AM, FM or data.? That should be rather easy to troubleshoot.? Just inject a audio signal (10mV

How do you have things wired? A pencil scribble diagram will help a lot. Greg KO6TH HI8RMQ via groups.io wrote: Thank you very much.

Thank you very much. But now I cant use the radio on Ssb HF. Something can be done?

Correct. The audio is "basically" gone, down probably 50+ db. I was able to force a marginal FT-8 signal through from the back by moving it from a "Line Out" jack on the PC to the Speaker

Yes, but talking very loud you may get maybe 5w in SSB. In Fm (Hf only) or am, is barely audible. Carrier is good, 100W in Fm, but modulation almost gone. It works fine in vhf and uhf. Have 2 radios,

I have noticed that I can have the 847 on for a while and then when key the CW key, the speaker volume suddenly increases.? Anybody else experience this?? It don't know if the receive sensitivity

On more question if you key the transmitter with te mic in ssb, is it working? -- Greetings from Erik Rothuis (PA2ER), Terborg Netherlands.

Right. If you key with CAT, but feed the FT-8 / Packet audio in from the back, the audio will not reach the transmitter. SSB will have no output, and AM / FM will be carrier only. The only

Keying with CAT, but those radios are not in use anymore, the have no output in HF SSB. They have carrier in Fm, Am, but no modulation.

How are you keying the rig? If you key the rig with CAT, the audio needs to come in from the mike plug in the front. Key the rig via the TRS jack, feeding audio in to the same, and it should