Re: [Elecraft] [KX3] PX3 display not sensitive

2015-07-31 Thread David Anderson
Beware the noise blanker can introduce a lot of false products with strong signals. For example on 144 MHz I have the PX3 NB on and it does cut out display of powerline noise, but as soon as a strong signal appears on the band the noise level bounces up and down way beyond the actual signal. So

Re: [Elecraft] [KX3] PX3 display not sensitive

2015-07-31 Thread Matt Maguire
Another thing to try is the noise blanker in the PX3. At the moment I have an arcing power pole down the road from my place spewing out lots of garbage on the air, which can be seen on the PX3. If I enable the PX3's noise blanker, it really cleans up the display and lets me see the underlying si

Re: [Elecraft] [KX3] PX3 display not sensitive

2015-07-31 Thread John Kramer
Matt Thanks for your response, really appreciate it. 1. Yes, the RX IQ is enabled - I think if it wasn’t enabled I wouldn’t see anything on the PX3. It is working normally, it’s just that the trace left on the waterfall is extremely faint for a signal that is 20 - 30 db above the noise floor.

Re: [Elecraft] [KX3] PX3 display not sensitive

2015-07-31 Thread Matt Maguire
That doesn't sound normal. Three things to check:- in the KX3, do you have the RX I/Q set to Enabled- on page 16 of the PX3 manual, check the REF and SCALE settings- have you done the side and nulling procedure on page 26? Maybe the gain settings there are not sane. 73, Matt VK2RQ On Fri, Ju

Re: [Elecraft] [KX3] PX3 display not sensitive

2015-07-31 Thread John Kramer
I bought a new KX3 and PX3 factory built, 3 weeks ago. It is a great pair, but there are several annoying things. The one thing that I have issue with is the very poor “sensitivity” of the PX3. I have 59 plus 10 signals on my KX3, however, on the PX3 waterfall the trace is very faint and indist