[1000mp] RTTY

[Bob Lafont]

A few of us here in Minneapolis wanted to be able to use our 500 (or 400hz
INRAD) filters for ARRL RTTY RU while using the AFSK tones from our sound
cards. It's very easy and straightforward to do. Here's how:

Wire the computer MIC Out to an isolation 1:1 transformer (Radio Shack
273-1374), cost $4. The other side of the transformer is wired to a 5-pin
DIN plug that connects to the Packet port on the radio. Cable length between
the computer MIC Out  -> 1:1 transformer  -> radio is not important. 

The radio receive is wired from the radio (MkV in my case) Audio Out, fixed
gain, to another 1:1 transformer. Same part number from Radio Shack to the
Line In of the sound card. Some of us didn't use the transformer and it
worked fine for them

Put the radio in Packet mode using LSB and now you can use the Narrow
filters for AFSK RTTY and packet modes including PSK31, MFSK, etc.


73-Bob
WA2MNO

-----Original Message-----
From: 1000mp-bounces at mailman.qth.net [mailto:1000mp-bounces at mailman.qth.net]
On Behalf Of Pete Smith
Sent: Thursday, January 19, 2006 9:01 AM
To: All about Yaesu 1000mp
Subject: RE: [1000mp] RTTY

As a very occasional RTTY contester, I typically use AFSK (N1MM/MMTTY) and
just feed the transmit audio to my radio through the same mike jack cable I
use with my DXD for SSB.  Till now, I have just used LSB, and it has seemed
to work fine, but I have cascaded INRAD 400 Hz filters in the radio and it
would sure be neat to be able to use those filters in AFSK.  I've been
through the manual and haven't seen an answer to this, but wonder if
something like you describe can be done with my setup.

73, Pete N4ZR

At 09:48 AM 1/19/2006, you wrote:

>Jim,
>
>> I've been contesting on RTTY for several years now without no stinkin 
>> Rig Blaster (I actually don't know anything about the RB - I just 
>> like using that "no stinkin" phrase).
>>
>> I use AFSK.  From what I understand, you can't use your narrow MkV 
>> filters in the Rx if you use FSK.
>
>You're misinformed ... the narrow filters work just fine in FSK (RTTY).
>
>The RTTY mode of the FT-1000MP, Mark V and Field (as well as the 
>FT-1000D and FT-990) is LSB.
>
>Set the FT-1000MP menus as follows:
>
>   6-0   rttY-SHF     170
>   6-1   rttY-POL     rEvErSE
>   6-2   rttY-ton     Hi tonE
>   6-4   rtY-FdSP     oFFSEt
>
>The filters (500 Hz and 250 Hz) will be automatically centered for 
>operation in LSB with 2215 Hz Mark and 2295 space (Lo tonE = 1275 Mark 
>and 1445 Space).
>
>If for some reason you *MUST* use USB, press the RTTY button TWICE 
>(both the RTTY and USB buttons will light) and set menu  6-1 to nor.
>Your TU or RTTY software will then need to use the HIGHER TONE for 
>MARK.
>
>73,
>
>    ... Joe, W4TV
>
>
>
>
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