[Elecraft] P3 Transmit Monitoring Feature

[Alan Bloom]

Time.  When transmitting, the spectrum display is (optionally) replaced 
by a display of the modulation envelope.  One cool feature that I 
haven't seen elsewhere is that when the K3 is in CW mode, the envelope 
display optionally uses a split screen where the left half shows the CW 
rise and the right half the fall so you can see both edges at the same time.

The simulated meter displays are at the bottom.  The one on the left 
reads PEP and average power and the one on the right SWR.  There is also 
a digital readout of PEP power and SWR.

Either or both the modulation envelope and meter displays can be enabled 
and disabled via menu entries.  You can also change the full-scale power 
for the meter and the ms/div for the modulation envelope display (the 
amplitude is auto-scaled).

Alan N1AL


On 04/20/2015 10:24 AM, Hank Garretson wrote:
> I missed the Visalia presentation.
>
> Will it be time- or frequency-domain display? Or even better, both?
>
> 73,
>
> Hank, W6SX
>
>
> On Monday, April 20, 2015, Alan Bloom <alan at elecraft.com 
> <mailto:alan at elecraft.com>> wrote:
>
>     The SVGA option is not required for the TX monitor feature.  It
>     does require a small option board which fills one of the unused
>     holes on the P3 back panel and an external power sensor similar to
>     a W2 wattmeter sensor.  The only difference from a standard W2
>     sensor is several capacitors have a smaller value to improve the
>     bandwidth for the modulation envelope display.
>
>     The new firmware to support the sensor is pretty far along. The
>     main thing we're working on right now is the aesthetics of the
>     "meter" displays that show the PEP/average power and SWR.
>
>     Alan N1AL
>
>
>     On 04/20/2015 08:23 AM, Joe Subich, W4TV wrote:
>
>
>         At one time Wayne said the SVGA would not be required but I
>         have not seen further confirmation or any word of a change.
>
>         I don't have the SVGA either and hope it will not be a
>         requirement as the cost of SVGA plus sensor really tips the
>         cost/benefit equation.
>
>         73,
>
>            ... Joe, W4TV
>
>
>         On 2015-04-20 10:14 AM, Jim Miller wrote:
>
>             Will the SVGA add on be required for this?
>
>             I do not have it yet.
>
>
>
>             Thanks, 73, Jim KG0KP
>
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