FL2 is 2.7kHz and FL4 is 400Hz on both receivers. The CONFIG is set to transmit CW using the 2.7kHz filter, but the power output seems to vary on the main RX when I narrow the receive bandwidth down to 400Hz where FL4 kicks in. I first discovered this yesterday when trying to set up SSB. After following all the setting instructions I didn't get much RF out when I went to normal TX and full power. I didn't try this with the opposite sideband, but I now suspect that one sideband will be good and the other will be poor.
When I get back tonight I will check the filter responses using band noise and a program called Visual Analyser from Sillanum Software which allows me to plot both the main and sub-RX frequency responses at the same time. Danny, G3XVR -----Original Message----- From: Elecraft [mailto:[email protected]] On Behalf Of Joe Subich, W4TV Sent: 13 September 2015 23:37 To: [email protected] Subject: Re: [Elecraft] TX Power On 9/13/2015 4:16 PM, G3XVR wrote: > The problem is different on 80M and 6M. On 80M I can get full power on > Normal CW, but not much on CW Rev. The opposite is true on 6M. > However, if I reduce the bandwidth so that FL4 is selected instead on > FL2 I can get full power on both bands and on both CW modes. CW TX and SSB TX should use the 2.7 or 2.8 KHz filter. Only AM TX and FM TX should use other (wider) filters. What is the bandwidth of your FL2 and FL4? 73, ... Joe, W4TV On 9/13/2015 4:16 PM, G3XVR wrote: > The problem is different on 80M and 6M. On 80M I can get full power > on Normal CW, but not much on CW Rev. The opposite is true on 6M. > However, if I reduce the bandwidth so that FL4 is selected instead on > FL2 I can get full power on both bands and on both CW modes. If I > select Split and use the sub-RX, I can get full power on both bands, > using both filters on both CW modes. I sounds like a filter offset > problem. I've reset it to what the sticker inside the K3S says (-97 > for main RX and -79 for sub RX). I assume these figures are in Hz. > Is there any way of confirming that there is an offset problem? > > Danny, G3XVR > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/TX-Power-tp7607570p7607580.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
