I may be wrong: but any receiver, even the poorest, can have a fantastic
intercept point if you put enough attenuation at the input? So, I guess, and
I only guess now, that the intercept point is only interesting if you at the
same time tell what sensitivity you have? In other words: the lower end of
your dynamic range?
Regarding the ARRL test report on the FT 1000, it is interesting to note
that this rig stands out from similar rigs at close spacing of the two test
signals used in the dynamic range test. Does the FT 1000 have a separate and
narrow input roofing filter for all modes except FM?
Hej daa and..............sooner
de Hans SM5kI
----------
>Från: lomax1@prodigy.net
>Till: amps@contesting.com
>Kopia: lomax1@prodigy.net
>Ämne: RE: RE: [AMPS] Receiver performance
>Datum: tor 16 mar 2000 16.43
>
>
>
>Hi all
>I've been reading this thread for a while and want to ask a question.
>When one sees tests done on receivers they typically will give
>figures for such things as blocking dynamic range or 3rd order
>intercept. Picking an ARRL review of a typical receiver, the
>Kenwood TS-950SDX we have (at 14 MHz, no preamps, etc)
>
>Blocking dynamic - 131.8 dB
>two tone IMD - 94 dB
>3rd ord intercept 3 dBm
>
>Yippee - does anyone have any idea of what the theoretical maximum
>and/or the current practical maximums would be on these? Since
>I've seen the FT1000D has a 3rd order of 21 I can tell that it's
>better than the 950 - but - how much better could one yet go?
>
>
>Frank
>W2FCA
>
>
>-----
>Sent using MailStart.com ( http://MailStart.Com/welcome.html )
>The FREE way to access your mailbox via any web browser, anywhere!
>
>
>--
>FAQ on WWW: http://www.contesting.com/ampsfaq.html
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>Search: http://www.contesting.com/km9p/search.htm
>
>
--
FAQ on WWW: http://www.contesting.com/ampsfaq.html
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|