No analog S-meter emulation planned for the P3 at this time

[wayne burdick]

An analog S-meter emulation for the P3 is a nice idea that we will add to the wish-list. I'm not how a rumor started that we were adding this in the short term. My apologies if we were misinterpreted.

What *is* true is that we're going to have transmit power and SWR bar graph emulations available for the P3 when used in conjunction with an external RF sensor. There will also be a transmit envelope display (time domain, like an o'scope, in living color).

Meanwhile, note that the P3 is already something of an S-meter on steroids. It reads out directly in dB, with 1-dB resolution, and gives you a history of signal strength (waterfall display) as well as signal strength for potentially dozens of signals simultaneously.

73,
Wayne
N6KR

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[Vic Rosenthal]

Do you plan to display 'delivered' power, I.e., forward minus reflected power? This is something I miss in the W2.

Vic 4X6GP/K2VCO

> On Apr 21, 2015, at 7:11 PM, Wayne Burdick <[hidden email]> wrote:
>
> An analog S-meter emulation for the P3 is a nice idea that we will add to the wish-list. I'm not how a rumor started that we were adding this in the short term. My apologies if we were misinterpreted.
>
> What *is* true is that we're going to have transmit power and SWR bar graph emulations available for the P3 when used in conjunction with an external RF sensor. There will also be a transmit envelope display (time domain, like an o'scope, in living color).
>
> Meanwhile, note that the P3 is already something of an S-meter on steroids. It reads out directly in dB, with 1-dB resolution, and gives you a history of signal strength (waterfall display) as well as signal strength for potentially dozens of signals simultaneously.
>
> 73,
> Wayne
> N6KR
>
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[Elecraft mailing list]

Any chance of this also showing the spectrum on Transmit?


      From: Wayne Burdick <[hidden email]>
 To: Elecraft Reflector <[hidden email]>
 Sent: Tuesday, April 21, 2015 12:11 PM
 Subject: [Elecraft] No analog S-meter emulation planned for the P3 at this time
   
An analog S-meter emulation for the P3 is a nice idea that we will add to the wish-list. I'm not how a rumor started that we were adding this in the short term. My apologies if we were misinterpreted.

What *is* true is that we're going to have transmit power and SWR bar graph emulations available for the P3 when used in conjunction with an external RF sensor. There will also be a transmit envelope display (time domain, like an o'scope, in living color).

Meanwhile, note that the P3 is already something of an S-meter on steroids. It reads out directly in dB, with 1-dB resolution, and gives you a history of signal strength (waterfall display) as well as signal strength for potentially dozens of signals simultaneously.

73,
Wayne
N6KR

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[Edward R Cole]

Just an observation about professional engineering spectrum analyzers:

Most engineers will take the value from the curves, displayed.  They
do often have cursors which one can position which will display a
numerical value of the curve at that position.

Spectravue which accompanies the SDR-IQ has selectable resolution of
the vertical scale from 0.01 to 10 dB per division.  I use 0.2/DIV
for making sun noise measurements with my 16-foot dish.  The jitter
in the white noise allows me to estimate level to 0.1 dB using that
scale.  1-dB/DIV is perfectly reasonable for viewing radio
signals.  I usually set up 5-dB/DIV when observing eme signals (and
you know they are weak!).

For a typical S5 signal on 20m you will get very good resolution
(assuming your local noise is lower than S5).  I get S3 to 4 on HF
noise floor, on average, so S5 is 12-dB over noise.  S9+20 is 56-dB
over noise.  1-dB/DIV will have the display off the top of the screen.

If I didn't already have LP-Pan installed I would be interested in a
P3.  With addition of transmitter signal analysis that is a real
plus!  (I also cheat a little with my 1970's era surplus HP141T,
which cost me $550).

73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
     [hidden email]

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