SSB-TX-Signal is too bassy

[Michael van Hauten]

Hi,
my SSB signal is a little bit too bassy after i have modified my ssb-modul from 2.0 to 2.5khz. The filter setting for TRX  is OP1 in receive mode with lsb and seems with spectrogram full in range between 0.2 and 2.5khz.
What is to adjust?

tnx for your help
Michael, DC0ZO
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[Ron D'Eau Claire-2]

Shift the BFO frequencies so your spectrogram display shows that you are
cutting off a bit more of the low end (end nearest the carrier) and leave a
little more of the high frequencies (farthest from the carrier) inside the
bandpass.

Spectrogram is great, but I'd never count on a scope display to tell me what
my signal really sounds like! The final settings are just too precise and
vary with the mic you are using and your "ear". That's why the SSB module
instructions advise listening to your signal and making the final "tweaks"
of the BFO frequencies based on what you hear, not what you see.

Remember, only tweak the BFO frequency settings for OPT1. No other
filter/BFO setting combination is used for xmit, no matter what filter you
have selected for receive.

Ron AC7AC

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Michael van Hauten
Sent: Thursday, September 23, 2004 10:05 AM
To: [hidden email]
Subject: [Elecraft] SSB-TX-Signal is too bassy

Hi,
my SSB signal is a little bit too bassy after i have modified my ssb-modul
from 2.0 to 2.5khz. The filter setting for TRX  is OP1 in receive mode with
lsb and seems with spectrogram full in range between 0.2 and 2.5khz. What is
to adjust?

tnx for your help
Michael, DC0ZO


_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[Don Wilhelm-3]

Michael,

It seems that you may have placed the passband too low for a 2.5 kHz filter.

For any width filter, the low frequency corner of the passband should be
close to 300 Hz.  When you install the 2.5 kHz width, set frequency markers
in Spectrogram for 300 Hz and 2800 Hz, then set the BFO to center the
passband between those markers.

If you need more detailed information, look at my website www.qsl.net/w3fpr
article on K2 Dial Calibration - Step 3 gives a lot of information about
setting the filters.

73,
Don W3FPR

----- Original Message -----
From: "Michael van Hauten" <[hidden email]>
To: <[hidden email]>
Sent: Thursday, September 23, 2004 1:05 PM
Subject: [Elecraft] SSB-TX-Signal is too bassy


Hi,
my SSB signal is a little bit too bassy after i have modified my ssb-modul
from 2.0 to 2.5khz. The filter setting for TRX  is OP1 in receive mode with
lsb and seems with spectrogram full in range between 0.2 and 2.5khz.
What is to adjust?

tnx for your help
Michael, DC0ZO
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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: [hidden email]
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

[David A. Belsley]

The easiest solution to bassy SSB is CW.

best wishes,

dave belsley, w1euy


On Sep 23, 2004, at 2:52 PM, Ron D'Eau Claire wrote:

> Shift the BFO frequencies so your spectrogram display shows that you
> are
> cutting off a bit more of the low end (end nearest the carrier) and
> leave a
> little more of the high frequencies (farthest from the carrier) inside
> the
> bandpass.
>
> Spectrogram is great, but I'd never count on a scope display to tell
> me what
> my signal really sounds like! The final settings are just too precise
> and
> vary with the mic you are using and your "ear". That's why the SSB
> module
> instructions advise listening to your signal and making the final
> "tweaks"
> of the BFO frequencies based on what you hear, not what you see.
>
> Remember, only tweak the BFO frequency settings for OPT1. No other
> filter/BFO setting combination is used for xmit, no matter what filter
> you
> have selected for receive.
>
> Ron AC7AC
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Michael van
> Hauten
> Sent: Thursday, September 23, 2004 10:05 AM
> To: [hidden email]
> Subject: [Elecraft] SSB-TX-Signal is too bassy
>
> Hi,
> my SSB signal is a little bit too bassy after i have modified my
> ssb-modul
> from 2.0 to 2.5khz. The filter setting for TRX  is OP1 in receive mode
> with
> lsb and seems with spectrogram full in range between 0.2 and 2.5khz.
> What is
> to adjust?
>
> tnx for your help
> Michael, DC0ZO
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> 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: [hidden email]
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