"
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling
Message-ID: <1380125612061-7579228.p...@n2.nabble.com>
Content-Type: text/plain; charset=us-ascii
As your post indicates, the splattering of JT65 signals has most likely
nothing to do with your
My normal technique with sound card modes (mostly PSK31) is to
look at the audio AtoD overload indicator in my software and
reduce the RF gain so it indicates no overload. This procedure
uses the minimum necessary gain through most of the radio/AtoD
etc, limiting local distortion products. It w
Yep, that is 100% correct.
If the station that is offended would simply reduce their RF gain control,
in most cases they will see the signal clean right up. Then the real issue
is that they want to copy a weak signal that is in a chunk of spectrum that
is full of strong signals (most likely due t
Well nothing would put the issue to bed better than a nice printout of a P3
screen that was sampling the RF signal over a bandwidth of about 6KHz.
That's why I would LOVE for Elecraft to continue developing the P3 and
expanding its capability.
I don't mind the report, and I take it seriously, but
That clears up something that has bothered me on JT65. Many times
someone will complain about someone overdriving, but the signal appeared
to be OK to me. It happens frequently. Now I think the "complainer" is
probably receiving the station much more strongly than I am and it is
overdriving his
ginal Message -
From: "Ron D'Eau Claire"
To: "Bob"
Cc: "Elecraft"
Sent: Wednesday, September 25, 2013 11:31:25 AM
Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling
FWIW, overload from a strong local signal can cause much weaker signals to
beh
another Ham band, so it was not obvious to the operator.
73, Ron AC7AC
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of kc2vmp
Sent: Wednesday, September 25, 2013 8:34 AM
To: Bob
Cc: Elecraft
Subject: Re: [Elecraft] P3 Feature
If your neighbor tells you it's clean (and s/he knows how to look) then it's
likely the other station at fault. Noise blanking, noise reduction, poor RX
audio (over)driving are huge issues that can make any reception look bad.
Bottom line: don't sweat it if your local stations tell you you're
As your post indicates, the splattering of JT65 signals has most likely
nothing to do with your transmitter and setup. It is more likely to be due
to the specifics of the JT65 display/decoding algorithm than anything else.
I have done spectral estimation for some 30+ years and it reminds me very
mu
I am really hoping the "Sensor" port will be used for this! (Soon?)
kc2vmp
On Sep 24, 2013, at 10:09 AM, Bob wrote:
> So I've been loving my P3 for about 2 years now, and I keep looking at that
> lonely sensor window in the back, dreaming and wishing
>
> Yesterday I received an email from
Out of any real estate optimization and the money needed to buy it,
this link may show a needed parent to what we are asking for.
http://www.telepostinc.com/LP-500.html
When delivered, it would have the requested features and even more. Isn't it?
73 de iw1ayd Salvo
PS this rememb
oing its job.
Then one would suggest it could be toggled on and off What a wonderful
thought hint hint.
Mel, K6KBE
From: Gary Gregory
To: Sam Morgan
Cc: "elecraft@mailman.qth.net"
Sent: Tuesday, September 24, 2013 8:06 AM
Subject: Re:
Geoff
G3UCK
-Original Message- From: Mel Farrer
Sent: Tuesday, September 24, 2013 8:49 PM
To: Gary Gregory ; Sam Morgan
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling
I would like to state a glitch that happens once in a great while on my
P3. It
all
Geoff
G3UCK
-Original Message-
From: Mel Farrer
Sent: Tuesday, September 24, 2013 8:49 PM
To: Gary Gregory ; Sam Morgan
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling
I would like to state a glitch that happens once in a great while on my P3
What a wonderful
thought hint hint.
Mel, K6KBE
From: Gary Gregory
To: Sam Morgan
Cc: "elecraft@mailman.qth.net"
Sent: Tuesday, September 24, 2013 8:06 AM
Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling
Sam,
I still beli
Resolution would be the same as on received signals - frequency resolution of
span/450 and amplitude range 10 - 80 dB. One gotcha is that the P3 only
handles IF's up to 21.7 MHz so presumably there would need to be some
hardware to allow up to 54 MHz.
I'm also looking forward to a transmit monitor
> It's become very difficult to locate an SM-230 monitor in the used
> market and even when you do, they are asking an arm and a leg. I've
> got a pretty clean one, but I can't find anyone who seems to be able
> to service the unit.
A basic transmit monitor (amplitude domain) is extremely easy
What if one defined the IF of the P3 to be at some PSK frequency and
connect a loop of wire to it's RF input? Put the loop on the desk.
There might not be enough resolution to clearly see anything but gross
PSK signal infidelities.
73 de Brian/K3KO
On 9/24/2013 16:40, Edward R Cole wrot
Hi Tom,
It's become very difficult to locate an SM-230 monitor in the used market and
even when you do, they are asking an arm and a leg. I've got a pretty clean
one, but I can't find anyone who seems to be able to service the unit. As you
state It does do a pretty good job though for monitor
I don't have a P3, so my curiosity is only academic.
The "sampling function" being referred to, would bring a low power
sample of transmit power to the P3? This does not seem very
difficult to "roll your own" sampler. I gather the P3 has the needed
RF ckts to receive RF and demod it, or is
Even if they never add the feature, wouldn't it be better to use a
device like the Kenwood SM-230 monitor, rather than giving up an
excellent XCVR for the sake of monitoring youe signal?
Tom
N5GE
On Tue, 24 Sep 2013 10:03:50 -0500, you wrote:
>I know we aren't suppose to do the 'me to' kind of
Just to add that three others have replied to me (as opposed to the entire
group) saying they would like to see this too.
I suspect this would be a wildly popular item. I've sort of bought
everything Elecraft has to offer. I need a new accessory to continue
transferring my money to Eric and Wayn
I know we aren't suppose to do the 'me to' kind of posts here
and before hundreds of others add theirs and the topic gets canned
(again)...
as far as I am concerned this is the only remaining 'feature' that ruins
an otherwise perfect station combo.
perhaps the Flex is worth looking at again
Sam,
I still believe in the ol saying...the squeeky wheel get's the oil...so
it's good to keep our requests up.
73
On 25 September 2013 01:03, Sam Morgan wrote:
> I know we aren't suppose to do the 'me to' kind of posts here
> and before hundreds of others add theirs and the topic gets canned
On 24/09/2013 15:11, Gary Gregory wrote:
Your not alone...:-(
+1
This is one of the nicer features of my Flex1500
Stewart/G3YSX
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Your not alone...:-(
On 25 September 2013 00:09, Bob wrote:
> So I've been loving my P3 for about 2 years now, and I keep looking at that
> lonely sensor window in the back, dreaming and wishing
>
> Yesterday I received an email from a ham a few thousand miles away asking
> me to clean up m
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