Re: [K2] Question about tuning K2 for SSB..

Posted by w2bvh on Nov 05, 2010; 3:43am
URL: http://elecraft.85.s1.nabble.com/K2-Question-about-tuning-K2-for-SSB-tp5703977p5707778.html

  You can adjust the ssb filter by listening to your own voice on the
rig and adjusting the ssb filter to what sounds best to you. To monitor
your own voice set the SSBA option to "BAL". Then got to CAL FIL for the
filter you want to adjust and adjust it (a little at a time) while
talking into the mic.  The only caveat is that your mic has to be hot
(making a signal) when the PTT line is *not* active. If your mic opens
the mic signal line when PTT is not pressed you will have to temporarily
jump out the switch contact that opens that signal.  I found it was
better if someone else was listening to my voice on the headphones
instead of myself. They'll let you know when you have adjusted the ssb
filter for the best audio.

Don't forget to reset the SSBA "BAL" option back to its previous value
after you're done.

Sounds harder than it is. You can probably do the whole thing in 1/2 hour.

GL & 73,
Lenny W2BVH



On 11/3/2010 10:20 PM, VK7JB wrote:

> Hi All,
>
> I'm learning to drive my new K2/100 and have reached a conceptual block that
> will betray a fundamental lack of understanding, but here goes anyway...
>
> My K2 dial frequency reads about 20hz under the actual frequency - receiving
> WWV on 10000.00, the LCD frequency readout reads 9999.98.  That's all good.
> But,  when I'm working SSB and want to make contact with a station already
> transmitting on a particular frequency, how do I handle the tuning to ensure
> I'm transmitting on his frequency exactly.  Do I tune my K2 to achieve best
> resolved  audio receiving his signal, regardless of the actual frequency
> displayed on my LCD,  then assume when I hit TX I'll be transmitting exactly
> on his frequency?  Or is there any other way to account for this small 20hz
> shift, to make sure I'm transmitting exactly where he is tuned?
>
> I'm running my K2 with the MH-2 mic and last night got reports of "muffled"
> audio.  I suspect I'll need to tweak the SSB filter passband position- the
> position looks good on Spectrogram with the low frequency roll off for the
> SSB Tx filter sitting around 300hz, but I understand it may need some
> "optimising" with  live audio monitoring.  I did wonder  if my tuning
> technique was contributing to the problem - perhaps I'm not transmitting
> exactly where they're listening.
>
> I hope that makes sense.  Any advice always gratefully received,
>
> 73,
> John
> VK7JB

______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html