[1000mp] Data fiters

Sun, 29 Feb 2004 12:15:14 -0500

Unfortunately, because of Yaesu's brain dead firmware, the MKV=20
series cannot properly use the 1.8/500/250 Hz filters for digital=20
modes.  The front panel filter selection limits one to the choice=20
of 2.4/1.8/500 or 2.4/1.8/250 filters. =20

Unless you have a burning need for the 250 Hz filters (RTTY DX or=20
RTTY contesting), set menu 5-4 - dAtAnAr2 to 500H and in digital=20
modes NOR -> 2.4 Khz,  NAR1 -> 1.8 KHz,  Nar2 -> 500 Hz. =20

To make use of a second set of narrow filters (e.g., 250 Hz), one=20
needs to use computer control:=20

 1) MPFilters is a stand alone utility that will select any filter=20
    combination (see the software page at: www.va3cr.net). =20

 2) DXLab's rig control aapplication Commander will allow arbitrary=20
    filter selection for day to day operation (www.qsl.net/dxlab)=20
    in association with one of the most complete and flexible log=20
    programs available. =20

 3) For contesting, the N1MM Free Windows Logger (www.n1mm.com)=20
    can be configured to allow selecting between any two of the=20
    1800/500/250 Hz filters. =20

I honestly don't know what Yaesu were thinking when they chose the=20
filter selections for digital modes on the MKV ... and continue=20
to stonewall a fix (it's nearly as bad as the CW key click issue
that has existed in every Yaesu radio for the last 15 years)!

73,=20

   ... Joe, K4IK=20
  =20

> -----Original Message-----
> From: [email protected]=20
> [mailto:[email protected]] On Behalf Of Tom Homewood
> Sent: Sunday, February 29, 2004 10:00 AM
> To: [email protected]
> Subject: Re: [1000mp] Data fiters
>=20
>=20
> If you do any RTTY contesting you will want 250 Hz filters, I have two
> Inrads.
>=20
> 73, Tom W1TO
>=20
>=20
> ----- Original Message -----
> Subject: [1000mp] Data fiters
>=20
>=20
> What width Inrad filters would be recommended for the Mark V Field for
> data, RTTY, PSK31? I have added a pair of 1.8 KHz and a 500Hz filters
to=20
> the receiver and would like fill the filter lineup for NAR2. I do not
> operate CW. John K3YS
>=20
>=20