It finally dawned on me that the 6kHz filter could be put to work for
soundcard modes in both transmit and receive by enabling ESSB and
using USB or LSB instead of DATA A. Indeed, it works just fine with BW
set to 4kHz and shift adjusted to put center at 1800 or so. With DM
780 set to max width (3.
al Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich,
> W4TV
> Sent: Friday, September 19, 2008 11:55 AM
> To: 'zibs'; elecraft@mailman.qth.net
> Subject: RE: [Elecraft] K3 PSK31 with Digipan
>
>
>
>> But in
On Sep 19, 2008, at 2:32 PM, Bob Cunnings wrote:
Yes transmit is restricted - to the 2.7 (or 2.8) kHz filter. Hence the
request to allow transmit using the 6 KHz filter, at least to same
extent as receive (up to 4KHz currently).
We all agree that you can receive in a wide passband (even as wid
Yes transmit is restricted - to the 2.7 (or 2.8) kHz filter. Hence the
request to allow transmit using the 6 KHz filter, at least to same
extent as receive (up to 4KHz currently).
Bob NW8L
On Fri, Sep 19, 2008 at 3:22 PM, Don Wilhelm <[EMAIL PROTECTED]> wrote:
> Bob,
>
> Receive should work, but
Bob,
Receive should work, but transmit will not - I believe it is restricted
in the firmware.
73,
Don W3FPR
Bob Cunnings wrote:
Yes, many of us know all this, but it's still nice, under benign
conditions, to operate using a wider waterfall for both transmit and
receive. I often operated PSK
er.
>> Being able to see ~6 Khz of spectrum in the waterfall window would be
>> great.
>>
>> -Dave Quick KØEKL
>>
>>
>>
>>
>> -Original Message-
>> From: [EMAIL PROTECTED]
>> [mailto:[EMAIL PROTECTED] On Behalf Of Joe Subich, W4TV
>> Sent
L PROTECTED] On Behalf Of Joe Subich, W4TV
Sent: Friday, September 19, 2008 11:55 AM
To: 'zibs'; elecraft@mailman.qth.net
Subject: RE: [Elecraft] K3 PSK31 with Digipan
But in Data A mode, one can expand the receive width out to
4 kHz using the 2.7 kHz filter. If you attempt to transmit
riday, September 19, 2008 11:55 AM
To: 'zibs'; elecraft@mailman.qth.net
Subject: RE: [Elecraft] K3 PSK31 with Digipan
> But in Data A mode, one can expand the receive width out to
> 4 kHz using the 2.7 kHz filter. If you attempt to transmit below 200
> or above 2800 Hz, power
Users of narrow-band digital modes such as PSK31 need to remember the
difference between transmit and receive in the way we perceive dynamic
range.
On transmit, a 10 dB difference is a factor of 10 in power. If your power
meter only goes up to 5W when you were expecting 50W, you will likely
percei
aft@mailman.qth.net
> Subject: Re: [Elecraft] K3 PSK31 with Digipan
>
>
>
> But in Data A mode, one can expand the receive width out to 4
> kHz using the 2.7 kHz filter. If you attempt to transmit
> below 200 or above 2800 Hz, power output will drop to zero.
>
> The
Steve,
I would think that most users are aware that they are transmitting
through the 2.7 kHz (or 2.8) filter - after all, they set it up that way
in the menu (and if they did not, they would get a TX FL error message).
So I should think that they would not expect to transmit an audio tone
out
zibs wrote:
But in Data A mode, one can expand the receive width out to 4 kHz using the
2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power
output will drop to zero.
The user needs to be aware when clicking on the waterfall as one can receive
signals on frequencies in wh
I have not noticed this with my K3, using both a cheap SoundBlaster audio
card and an expensive E-MU card. My first suspicion would be something
impeding the audio getting to the transmitter - K3 equalization, sound card
equalization. Are you using the line in audio source? Check settings for
But in Data A mode, one can expand the receive width out to 4 kHz using the
2.7 kHz filter. If you attempt to transmit below 200 or above 2800 Hz, power
output will drop to zero.
The user needs to be aware when clicking on the waterfall as one can receive
signals on frequencies in which they cann
> Just getting my new K3 working on PSK31 and noticed that it seems to be
> > important to limit the range of the transmit frequency...
I just swept my K3 in DATA A mode.using the LINE IN jack for sourcing
the Tx audio. It is flat from below 200 Hz to higher than 2800 Hz
using a 2.,8 kHz IF filt
o:
Sent: Friday, September 19, 2008 2:12 PM
Subject: [Elecraft] K3 PSK31 with Digipan
Just getting my new K3 working on PSK31 and noticed that it seems to be
important to limit the range of the transmit frequency. Using Digipan and
K3
Data A mode, if I select a transmit frequency on the water
Just getting my new K3 working on PSK31 and noticed that it seems to be
important to limit the range of the transmit frequency. Using Digipan and K3
Data A mode, if I select a transmit frequency on the waterfall that is too
high or low, I will get very low (or zero) power output. It seems like one
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