[1000mp] ARRL data - 1 kHz IMD and BDR performance

Ian White, G3SEK [email protected]
Fri, 30 Jan 2004 08:43:46 +0000


Thanks for that very useful table, Bill, and for all the research behind 
it.

Scott Manthe wrote:
>If you consult the Peter Hart reviews from the RSGB,  you'll find the 
>original MP isn't really all that much better than the Mark V, except 
>for blocking dynamic range

It's unfortunate that ARRL have used the results from the original MP 
review as the "gold standard" (their words) in reviews of subsequent 
models.

ARRL's results and Peter Hart's results generally agree [*] quite 
closely ... but not in this case.

ARRL and Peter Hart co-ordinate from time to time about test methods, 
and any major sources of difference (e.g. IF bandwidth) are understood. 
However, they don't co-ordinate about the results of individual reviews, 
mostly because new models tend to be released several months earlier in 
the USA than over here.


-- 
73 from Ian G3SEK         'In Practice' columnist for RadCom (RSGB)
                            Editor, 'The VHF/UHF DX Book'
http://www.ifwtech.co.uk/g3sek