For RTTY (RTTY MODE, PKT MODE, PKT/LSB or ???), nothing I can do with my
new MK V FIELD (so far) results in having available the same NAR NAR1
NAR2 filter selections as when using the CW Mode (2.0 500 250). Yes, all
optional filters are installed and working. While in the RTTY mode, I
can change the NAR2 to/fm 500/250 via Menu 5-4 but thats much much too
slow for contest work. I can effectively use the "MPFilters" utility
(which is pretty slick) but that precludes use of RIG Control via
WRITELOG, LOGGER32 or any other software using the serial port to do
'rig control' (you can't do both at the same time).
Whether or not this problem is exactly the same on the regular MARK V, I
don't know. What I've described is applicable to the MARK V FIELD that
bought from HRO three weeks ago.
So far I am very disappointed in the way YAESU set up the MV FIELD
filter selections for RTTY. They CLEARLY do not understand - are not
knowledgeable of - RTTY contesting needs. All the digital modes need to
have the same access to filter selection that the CW mode does. How they
ever came to any differenct conclusion is almost mind boggling. Had I
fully realized and understood the limitations of this radio with regard
to filter selection alone, I would have bought the ICOM PRO II. But I've
always been a big Yaesu fan and thought, for sure, there'd be a way
around this problem. So far, I sure can't find it. What a bummer!
Tom WX4TM
----- Original Message -----
From: "Þorvaldur Stefánsson" <tf3mm@simnet.is>
To: "'Goran ANDRIC, S55OO'" <s55oo@lea.hamradio.si>;
<wx4tm@tm-moore.com>; "'Jim Smith'" <jimsmith@shaw.ca>;
<writelog@contesting.com>
Sent: Thursday, February 19, 2004 8:25 AM
Subject: RE: [WriteLog] AFSK on RTTY not LSB on 1000mp field
> I decided to try my own advice and switch to AFSK and it does´nt work
as I
> thought it should.
>
> I could have sworn I had afsk working under 'user mode' but it
doesn´t.
>
> My apologies to all for my wrong advice.
>
> I now use PKT (lsb) menu 6-4 (Packet Frequency Display Offset) is 2125
and I
> changed menu 6-5 to 2210 Hz (center of 2125/2295).
>
> That gives me access to the filters using the Packet rear panel jack
as
> S55OO and others have found.
>
> The reason I have gone to AFSK rather than FSK is that I am now using
a
> Frederick 1280A which has a "True FSK"
>
> ("as defined by FEC's patent, which allows the change from mark to
space to
> be made as a smooth progression of intermedita frequencies directly
related
> to the selected keying rate. This reduces side band enerby normally
> produced by the nearly instantaneous change from mark to space
associated
> with the more commonly used FEK technique")
>
> - I fed the AFSK output into my spectrum analyzer program and switched
to
> "True FSK" and the difference is dramatic - much cleaner. I wonder if
some
> rigs have "key clicks" on RTTY (FSK mode) as well as on CW?
>
> 73
>
> Thor, TF3MM
>
>
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