[1000mp] remove top or bottom cover for filters on Mark V?
Julio Roque/Bits
[email protected]
Sat, 5 Oct 2002 15:17:31 -0400
Thanks Hans.
Unfortunately, I guess, I found a deal to buy 6 of the Yaesu filters for
$400 and couldn't pass it up. One thing I noticed on another Yaesu radio
loaded with Inrad's is that engaging the CW filter will generate an amount
of noise by-product. I don't hear as much of the noise on the radio with
the Yaesu filters but this could be due to the sharper skirts on the
Inrads.
Taking a queue from my audio hobby, it appears as if the audio is not just
bandpassed but compressed into the narrow bandwidth of the filter and then
amplified to compensate for level loss. This produces some unwanted
overtones which, unluckily, seem to be right on the CW pitch you're trying
to zero-beat on. I don't know much about IF stages but that doesn't happen
as pronounced in the audio world. I can take a CW audio recording, load it
into Sound Forge and come up with a pristine sounding CW tone; very little
noise left and none added. It would be really great if somehow we can
digitize the IF stages and process it in our computers.
Mandatory 1000MP subject: I'm finding myself tuning the bands with the Mem
Ch button rather than the nice, large VFO wheel. Lacking the function
found on my FT-847 where the Mem Ch button will round the freq to the
nearest integer, would it be useful to write a program that does it as one
turns the VFO?
Regards,
Julio
K4JRG
>Not only the shapefactor of the Inrad filters is one of the best, but
they
>have very good audio too; more natural.