RE: [TenTec] Sherwood Presentation

["Ten-Tec Inc. Amateur Radio Sales" <sales@tentec.com>]

At 12:01 PM 5/19/04 -0400, you wrote:
> As to whether or not TT fixes the degradation of dynamic range performance
> at the 2 kHz bandwidth with the 500Hz/250Hz filters is something they could
> overcome in a short period of time if they wanted too. If they don't George
> at INRAD will surely make quite a few dollars off an improved design
> 500/250Hz roofing filters for the Orion.

> The numbers as Rob Sherwood was
> pointing out on Saturday are quite impressive on the Orion's Dynamic Range
> from 20 kHz to 2 kHz with only a 4db difference in such a huge change in
> bandwidth that is fantastic, congrads TT engineers, now if the 500Hz roofing
> filter could be somewhere close, say the upper 80's that would be the icing
> on the cake.
>
> Dave, N4IN

Let's not lose perspective on this, the Orion is -by far- the best receiver
performance available today.  Plenty of objective reports with testing
numbers are on hand to back this up.  We've had lots of positive reviews
on the radio, including Rob Sherwood's presentation, ON4UN's report,
the ARRL, DARC, RSGB...and on from there.

There are a number of complicated factors that go into the very small
roofing filter bandwidths receiver performance of the Orion.  We've been
talking about this for quite some time, even before Rob's presentation
and there isn't any other answer at the moment except we're looking
into it further.  Substituting an Inrad filter in the 500 Hz and 250 Hz will
not gain anything over the #217 and #219 optional filters we're using.

Thanks
Scott Robbins W4PA


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