[Elecraft] LSB/USB Audio
Hello all. I have been setting up my transmit audio on K2 #4785 lsb/usb,ok here is what ive noticed my usb reports on the conventional usb bands 20/15/10 are great no problems also reports on lsb conventional bands 80/40 are also great. When I listen to usb on 80/40 it seems muffled and also the same is true for lsb on 20/15/10 ok this is not a issue as I keep to the lsb/usb band conventions but can someone tell me why the audio is muffled in this way is it desighned to do this. M1MGD G-QRP 11355 Elecraft K1 #1532 K2 #4785..72/73.. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] LSB/USB Audio
Remember that your filters are also used on transmit (OPT1). So go back and redo your filter aligment per the book and preferably using Spectrograph. This is most likely where your problem lies. Gregg R. Lengling, W9DHI, Un-Retired K2/100 SN 3075 http://www.milwaukeehdtv.org - Original Message - From: [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Wednesday, March 30, 2005 1:28 PM Subject: [Elecraft] LSB/USB Audio Hello all. I have been setting up my transmit audio on K2 #4785 lsb/usb,ok here is what ive noticed my usb reports on the conventional usb bands 20/15/10 are great no problems also reports on lsb conventional bands 80/40 are also great. When I listen to usb on 80/40 it seems muffled and also the same is true for lsb on 20/15/10 ok this is not a issue as I keep to the lsb/usb band conventions but can someone tell me why the audio is muffled in this way is it desighned to do this. M1MGD G-QRP 11355 Elecraft K1 #1532 K2 #4785..72/73.. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] LSB/USB Audio
If the transmit audio is fine, then maybe he doesn't want to mess with the BFO settings for position FL1. Only the BFO settings for FL1 position are used for transmit, regardless of what filter position (FL1, 2, 3 or 4) is being used in receive. Have you tried other FL positions? You can adjust the BFO frequencies for SSB FL2, FL3 and FL4 to adjust the sound of received signals without affecting your transmit audio at all. Select OPT1 for each filter, then adjust the BFO frequency for the audio quality you want. Since your transmit audio reports are FB, I'd suggest a starting point would be to set FL2 to use the SSB OPT1 filter and set the BFO frequencies identical to FL1. Now FL2 should sound just like FL1. With your frequency probe in your BFO test point, you can tune in an SSB signal, go into CAL FIL in your menu and, while listening to a signal on the air, adjust the BFO frequency for the best sounding signal. Repeat the process on a signal on a band using the opposite sideband. This will not affect your transmit audio at all. You can do the same with FL3 and FL4 if you like a variety of positions. It's sort of like passband tuning. Or you can switch FL3 and FL4 to the variable bandwidth (CW) filter and set it for narrower bandwidths to provide better QRM rejection in tough conditions, etc. Ron AC7AC -Original Message- Remember that your filters are also used on transmit (OPT1). So go back and redo your filter aligment per the book and preferably using Spectrograph. This is most likely where your problem lies. Gregg R. Lengling, W9DHI, Un-Retired - Original Message - Hello all. I have been setting up my transmit audio on K2 #4785 lsb/usb,ok here is what ive noticed my usb reports on the conventional usb bands 20/15/10 are great no problems also reports on lsb conventional bands 80/40 are also great. When I listen to usb on 80/40 it seems muffled and also the same is true for lsb on 20/15/10 ok this is not a issue as I keep to the lsb/usb band conventions but can someone tell me why the audio is muffled in this way is it desighned to do this. M1MGD G-QRP 11355 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
