[1000mp] Matching Filters Mark V

[Bob Martin]

1) Inrad #715-C - 2800 kHz filter (455 kHz) for 3rd IF.  This is a =
plug-in

and replaces the OEM Yaesu SSB filter (2.55 kHz) for improved fidelity =
on

BOTH receive and transmit.  This filter is used when the bandwidth =
switch is

in "Nor" position.  This filter is one of the best investments you can =
make

for high quality sound reproduction and it plugs right in with no fuss.

=20

2) Inrad #716-B - 2800 kHz filter (8.215 mHz) for 2nd IF.  This is not a

plug-in and must be soldered in, not a difficult job to do.  This =
replaces

the OEM Yaesu SSB filter (2.6 kHz) and, when used in conjunction with =
the

#715-C filter (listed above), results in dynamite sound quality. =20

=20

I have the above filters.  My question is how important is it to have
matching filters on the 455 kHZ and the 8.215mHz side.  Right now I have =
the
2800 (455khz) plug-in installed, but I have not installed the 2800 =
(8.215
mhz).  Is this a big problem or just that simply that the 2nd IF filter =
is
just different from the 3rd IF.  with no real effect.

=20

Next question I know that the receive passes through the 2nd and 3rd IF =
of
the radio.  I also know that replacing the so called 2.4 filters with =
the
2.8 filters also affects the transmit.  If this is true do both affect =
the
transmit side of just one or the other.  I guess the reason I am asking =
this
question is that I don=92t understand why Yaesu thought it best to =
solder-in
the 455 filter and not the 8.215 side?????

=20

Just Curious,

Bob


--=20
No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.0.385 / Virus Database: 268.3.1/292 - Release Date: 3/24/2006
=20