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

[D. J.]

I like to listen to SW broadcast and would want the wider filter, but I 
also like the 4 khz, so maybe one of our innovative ham  brothers will 
come up with a remote switchable scheme.  Maybe a reed relay rtv to the 
board someplace  wired to the AF reverse button on the front panel, I 
don't use that function anyway.  I'm sure there are other 
possibilities.

Dale, K9VUJ

On May 19, 2004, at 13:14, Pete Smith wrote:

> 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
> The World HF Contest Station Database
> was updated on April 26, 2004
> 2706 contest stations at
> www.pvrc.org/WCSD/WCSDsearch.htm
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