P3 phantom carrier

classic Classic list List threaded Threaded
2 messages Options
Reply | Threaded
Open this post in threaded view
|

P3 phantom carrier

Roger Crofts
Just recently my P3 is showing a carrier with-in the SSB pass band. It is quite strong and it is always there, even with no antenna connected. It is particularly annoying on CW, where it falls exactly on the expected receive frequency. It moves with the VFO, so it is always in the same place in the pass band, but it does not produce a tone in the headphones. I seem to remember reading that there is an adjustment to get rid of this, but I can’t find it in the P3 or K3 manual.
Roger, VK4YB
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]
Reply | Threaded
Open this post in threaded view
|

Re: P3 phantom carrier

Henrik Stenstrom
Roger, Interesting!

I have seen this on my relatively new P3 on initial turn on. The "phantom
carrier" (great description),  sweeps from left to right just after turn
on, and usually disappears off the right hand side of the screen.

In very hot weather last weekend, the phantom executed its usual move but
remained in view with the display width set at +/-100.

 - yes it follows the VFO
 - looks like a (very overdriven) carrier, but produces no tone.

Interested in understanding this.

Thanks,

Henrik - VK2HHS

On Fri, Dec 22, 2017 at 12:23 PM, Roger Crofts <[hidden email]>
wrote:

> Just recently my P3 is showing a carrier with-in the SSB pass band. It is
> quite strong and it is always there, even with no antenna connected. It is
> particularly annoying on CW, where it falls exactly on the expected receive
> frequency. It moves with the VFO, so it is always in the same place in the
> pass band, but it does not produce a tone in the headphones. I seem to
> remember reading that there is an adjustment to get rid of this, but I
> can’t find it in the P3 or K3 manual.
> Roger, VK4YB
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [hidden email]