[1000mp] MP Roofing Filter from INRAD -- hiss reduction needed?

[Pete Smith]

At 12:40 PM 5/19/2004, Mike Schatzberg wrote:
>I spoke with George yesterday, and he does indeed confirm that the filter is
>not going to be switchable.  He wants to make it a straight forward
>modification, that will suit the particular application for the radio.
>
>This means that if you listen to SSB wide band, as I do sometimes, to obtain
>either the best signal to noise ratio, or the best fidelity, you will give
>up something because it is not switchable, besides giving the AM and FM.
>
>It appears that you must make your choice between lower noise, with the IF
>kit, or better IMD numbers with the new kit.  Some people will opt for one
>over the other, depending on needs.
>
>The kit right now is still on the prototype board, and has not yet been
>commercially produced for sale.  The first run will be around 150 units or
>so, if I remember correctly.


Let's face it, guys -- the IMD performance of the Mark 5/MP series will 
satisfy all the real needs of 99.5 percent of owners.  People who want to 
work HF FM or listen to wideband SSB with the radio probably don't need the 
improvement this will bring.  Only pretty hard-core contesters really need 
it, and there aren't many of us who care about those other things.  I think 
George is smart to keep it simple.


73, Pete N4ZR
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