Home |
Search |
Today's Posts |
#1
|
|||
|
|||
Distorted audio on IC730
My old IC730 is giving me some problems with the TX audio. It used to
be fine, but I started getting poor audio reports. I checked my signal with another reciever and my audio is quite distorted. I've posted a sample at http://www.zshare.net/audio/696470222a13632b/ . I've tried several mics and I'm pretty sure I'm not overdriving it. Someone suggested it might be RF feedback, but it still happens when using a dummy load and ferrites on the mic lead. I'm armed an oscilloscope and circuit diagrams, but if ayone could give any pointers on what I might look for I'd be very grateful. Cheers Tom 2E0WNT |
#2
|
|||
|
|||
Distorted audio on IC730
Have you looked at the audio... just prior to mixing with the RF?
Does a medium to high level audio signal show signs of envelope clipping? What about a low level audio signal... does that make it through the audio chain properly? If not, you could have a biasing issue. |
#3
|
|||
|
|||
Distorted audio on IC730
On Sun, 24 Jan 2010 13:29:25 -0800 (PST), Telstar Electronics wrote:
Have you looked at the audio... just prior to mixing with the RF? Me? No. I have no idea what you're refering to. Does a medium to high level audio signal show signs of envelope clipping? Gee, what "high level audio signal"? What about a low level audio signal... does that make it through the audio chain properly? If not, you could have a biasing issue. Huh? I could have a "biasing issue"? How? Where? *NO!* WAIT! Damn!!! I'm replying to a google grooper's posting. No wonder it makes little sense. http://www.netmeister.org/news/learn2quote.html And, lastly: http://improve-usenet.org/ |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
DX-390 distorted audio | Shortwave | |||
DX-390 distorted audio | Shortwave | |||
DX-390 distorted audio | Shortwave | |||
How to fix distorted sideband audio on a Palomar 300 Elite | CB | |||
Hideously distorted FM | Shortwave |