Wes,
You make a very good point. The unwanted sideband will not be 0;
there will be some "residue" that can be heard if the signal is strong
enough. And, a lot has to do with the measurement method at the
receiver.
Years ago, I was running DSBSC using a Globe DSB-100. I was told
that my carrier was way down but my unwanted sideband was only 20 db
down. That was interesting as I made no effort to suppress my unwanted
sideband. The problem was the method that was used to make the
measurements and the strength of my signal. So, determining the ratio of
the two sidebands might be difficult, but it may be the correct
approach, However, it will require being able to "see" both sidebands on
an equal basis.
73,
Barry
K3NDM
------ Original Message ------
From: "Wes" <wes_n...@triconet.org>
To: elecraft@mailman.qth.net
Sent: 8/28/2019 1:45:11 PM
Subject: Re: [Elecraft] K3--Too much ALC creates energy on opposite
sideband?
Although the manual doesn't say so, according to an ARRL review, the K3S is specified
to have undesired sideband suppression of >50 dB. ARRL claims an optimistic
>70 dB.
So if you are extremely strong at the other guy's place, he might easily hear
an opposite sideband, even though your radio is operating correctly. Ask him
what the ratio is.
Wes N7WS
On 8/28/2019 9:40 AM, Nate Bargmann wrote:
I received a note this morning advising that I should check my ALC as he
is seeing some energy on USB when I check into a 75m voice net on LSB.
I am using an MC-50 microphone and am running the mic gain at 35 and the
compression at 11. My thinking was that generating opposite sideband
energy would be quite difficult with the K3's DSP. Am I wrong?
I'll try working with him some morning and back down the mic gain a bit
and see what that does for him.
73, Nate, N0NB
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to barrylaz...@gmail.com
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com
