[Elecraft] P3 vs SDR-IQ

[John Kramer]

Dale

See, there are limitations to both tracking and fixed modes. 
1. Yes, in tracking mode you don’t lose your waterfall - BUT you lose your
averaging when you tune.
2. If you want averaging to stay on all the time - tuning or not, then you can
choose “fixed”, but then the limitation with that mode, is that your VFO
filter moves along the display, drops off the edge, and refreshes the 
waterfall history.

I would like to see a combination of both, which is the way it works with 
Flex and PSDR - VFO receive filter remains centred, and does not move off to 
one side….and at the same time, while tuning, averaging remains on all
the time.

Yes, I have tried the MKR option, but find it quite fiddly, lots of knob pushing to 
achieve something, so I generally don’t use it.

73
John, ZS5J  C91J  A25J






On 31 Jul 2015, at 4:15 PM, dmb at lightstream.net wrote:

John,

It's true that in Fixed tune mode when you cross the boundary at either
end of the current span, the screen refreshes to the new span and you lose
your waterfall history. But in Tracking mode, don't you lose waterfall
history each time you tune?

Regarding your PX3, have you tried positioning MKR A on the signal of
interest, and then tapping the 'SELECT' knob on the PX3 to instantly take
you there? By doing that, you won't lose track of that signal. If you
decide you want to go back, push and hold the 'SELECT' knob to return to
your previous frequency.

73, Dale
WA8SRA

> 
<snipped /> And also, in Fixed mode, when
> it reaches the
> end of the display, it jumps back to the middle, and refreshes the
> waterfall - so any waterfall
> history that you had, is lost :(
> I have never used a Flex 6000 series radio, but I have been using, and
> still have the 5000A,
> 3000 and 1500. The system they use works just the way I want it - the RX
> filter remains centred
> in the display, and when you tune, the averaging remains on at all times.
> 
> 73
> John, ZS5J
> 
>