Re: USB OK, LSB narrow/pinched TX audio
|
OK The SSB part and FM Path are completely different, There are two PLL’s for upper and low side band, I suspect you LSB PLL is off frequency or out of lock, they both go off to the Balanced modulator: ? The technical supplement will tell you how to check it ? 73 ? Andrew ? 
? 
?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of vstockma@...
Sent: 14 March 2022 10:51
To: [email protected]
Subject: Re: [YaesuFT847] USB OK, LSB narrow/pinched TX audio? I just checked UHF and it sounds good on USB and terrible on LSB just like on HF.? Vic?
On Monday, March 14, 2022, 6:21 AM, vstockma@... <vstockma@...> wrote: FB = fine business.? I have not verified, but since it uses the same IF track, I assumed it was the same.? Vic
On Monday, March 14, 2022, 5:48 AM, Andrew Lenton <a@...> wrote: Hi, ? What do you mean about FB? Do you have a technical supplement? Is USB and LSB ok on V/UHF? ? 73 ? Andrew ? ? ? From: [email protected] [mailto:[email protected]] On Behalf Of vstockma@...
Sent: 14 March 2022 03:55
To: [email protected]
Subject: [YaesuFT847] USB OK, LSB narrow/pinched TX audio ? Good evening!
I have an FT-847 that I have had a good while and only used it on VHF (6 and 2 meters mostly, some satellite). The transmit audio sounds FB on upper sideband, but on lower, (75 meters) it sounds terrible.?
I have tried to see how to validate the carrier frequency for LSB, but not finding a setting or trimmer that affects the frequency in any way on either sideband.
Any suggestions?
Thanks
Victor
|
Andrew Lenton
