[1000mp] cw audio loud

[Scott Manthe]

So, do you think George, who owns Inrad, has a vested interest in seeing 
people continue to buy rigs that need crystal filters? Also, no mention 
is made as to whether or not any of these rigs have the optional roofing 
filters installed. Given these BW, I would expect that none do. These 
bandwidth firgures aren't as meaningful as they might be, because you 
can narrow DSP filters down to 50 or 100Hz usably, without the ringing 
present in rigs with crystal filters.

I own a Mark V Field and it has a bunch of extra Inrad filters in it, 
but I'm no slave to that technology. As I said, IF the FT-2000 has good 
enough RX specs, I would not hesitate to buy one.

73,
Scott, N9AA

n3drk wrote:

> Here are some figures provided by George,w2vjn, the owner of Inrad 
> Filters.
>
> Selectivity: Quartz vs. Silicone
>
> Filter          FT1000MP          Orion          756Pro3          IC7800
> 2400Hz          3000              2784           3360             3864
> 500             775               950            985              1850
> 250             415               750            734              1550
>
> The FT1000MP is the only transceiver which has Inrad Crystal Filters. 
> All the others are DSP.
>
> The table shows the measured receiver bandwidth at -60dB for the 
> nominal bandwidths under Filter.
>
> The only DSP radio with a bandwidth advantage is the Orion, and only 
> on SSB. Now, I know that
> selectivity is not the only important parameter for judging a radio, 
> but there are some really
> big differences in this table, particularly for the CW bandwidths. 
> This would surely have an
> impact on copying in a crowded band.
>
> There is a lot of hype out there about how great DSP is. Well you can 
> see how it compares to
> a pair of good crystal filters.The data shown here was obtained from 
> reviews in the Radio
> Society of Great Britain magazine, Radcom.
>