[1000mp] 1000MP Filter recommendation request

[Kok Chen]

On Sep 30, 2004, at 9:14 AM, K C Selvadurai wrote:

> I am an SSB person and am new to RTTY. Having participated in the 
> contest
> last week end, I have developed an interest in RTTY contesting.

Selamat datang!

The following reflector might also be of interest to you, Selva.  Many 
RTTY fanatics on that reflector who can offer all sorts of advice, 
contesting or just operational:

>> RTTY mailing list
>> RTTY at contesting.com
>> http://lists.contesting.com/mailman/listinfo/rtty

> Plse may I therefore ask what combination of Inrad filters should I 
> acquire
> for my 1000MP for RTTY?

I have the original FT-1000MP (not Mark V).  On RTTY, have been using 
combinations of 250 Hz and 500 Hz filters.  When the bands are crowded, 
I use a cascade of two INRAD 250 Hz filters.  Under fluttery 
conditions, I usually opt for a wider bandwidth, using the Yaesu 500 Hz 
in cascade with an INRAD 400 Hz filter (I _think_ it is a 400 Hz, it 
has been a while ago that I installed it).

If you are using FSK, make sure that you go into the RTTY menu to 
select the tone pair that your modem/TU/TNC is using so that the narrow 
filters get correctly centered.  If you are using AFSK, use the Packet 
mode of the FT-1000MP instead of SSB, and select the correct tone pair 
in the Packet menu and the filters will also be centered correctly.

If you use SSB mode for RTTY, you would need to adjust the SHIFT knob 
to bring a narrow band filter to center on the RTTY tones.

> My rig does not have any additional filters at this moment.

If you have the 500 Hz CW filter, it will work FB with either RTTY or 
Packet modes.

73
Chen, W7AY