[Elecraft] P3TX questions

[Mike K2MK]

Hi Alan,

Are there plans to display the transmitted envelope on an SVGA monitor in
the future. Would it require a different SVGA board? 

73,
Mike K2MK


Alan Bloom-2 wrote
> On 05/15/2015 12:34 PM, Jeff Stai wrote:
>> 1. What about digital modes like RTTY and PSK at least? How will they
>> display? For these modes determination of good TX quality will be huge.
> 
> The P3 screen shows the modulation envelope, so flat-topping of a PSK31 
> signal, for example, should be obvious.  RTTY is constant-envelope 
> modulation so you shouldn't see any amplitude changes.
> 
>> 2. Distance from the sensor. In the FAQ the distance supported is 5'6"
>> but
>> longer is hinted as being possible. What are the considerations for a
>> longer run (say 20 feet)? For example, bigger conductors, or shielding,
>> or...?
> 
> I'd say go ahead and try it.  I haven't tested longer cables but I can't 
> think of any reason they wouldn't work.  All the input pins on the RJ-45 
> have pi-type R-C filter networks.
> 
>> 3. Switching sensors. I see that mechanical RJ45 switches are available
>> for
>> low prices, what are the considerations for using a switch? Also, is it
>> strictly necessary to switch all 8 lines?
> 
> I suppose you could just leave the +5V (pin 1) and ground (pin 3) lines 
> connected to both sensors all the time, but a mechanical LAN switch 
> probably switches all 8 wires anyway so it's a moot point.
> 
>> 4. Meter display. This might be my favorite feature to have power/SWR
>> right
>> there at the P3, but the meter display to my eye is at least twice as
>> tall
>> as it needs to be. For digital contesting especially I live and die by
>> the
>> waterfall and hate to give up any real estate. Will the meter display
>> height be adjustable? (I'd be happy with just the numbers down in a
>> corner,
>> like:
> 
> We're still tweaking the design so a shorter meter face is a 
> possibility.  You can also gain some display space by turning off the 
> function key labels with the LABELS key or changing to a smaller type 
> font with the "Font" menu selection.
> 
> Alan N1AL





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