[Premium-Rx] MULTICOUPLER

[George Georgevits]

Thank you Clemens for finally putting some real meaning to this discussion!

Regards,
George Georgevits

VK2KGG




-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org]On Behalf Of Clemens Paul
Sent: Sunday, 2 April 2006 6:58 AM
To: Premium-rx at ml.skirrow.org
Subject: Re: [Premium-Rx] MULTICOUPLER



  Hi all,

  an IIP2 of +42dBm would mean that for 2 signals with S9+40dBm (-33dBm) you
would get a second
  order intermodulation product of -108dBm wich is approx. S3,
  for 2x S9+50dBm you'll get IM2 products of S 6,5,
  for 2x S9+60dBm you'll get IM2 products of ~ S 8 (-68dBm).
  To get back to premium RX's,the Telefunken E1800 has an IIP2 of +65dBm
(like the Orion) w/o
  preselector and +85dBm with preselector.
  The IC-7800's IIP2 was measured by ARRL with +98dBm w/o preselector on
20m.
  My results w/o preselector were +112dBm on 20m and +104dBm on 15m,
  with preselector +114dBm on 20m and +122dBm on 15m.

  73
  Clemens
  DL4RAJ
    ----- Original Message -----
    From: WJ
    To: Premium-rx at ml.skirrow.org
    Sent: Saturday, April 01, 2006 6:03 PM
    Subject: Re: [Premium-Rx] MULTICOUPLER


    At 10:01 AM 4/1/2006, you wrote:
    > > In Europe you would not get very happy with an IP2
    > > of +42dBm
    >
    >   Isn't +42dBMm 15 watts? Do you have more than 15
    >watts of off channel signal into your antenna?


    And 28 volts.  Yeow.  That's one tough RF environment.

    Terry O'



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