[1000mp] Signalink USB & 1000MP

[Tod - ID]

I have used the SL-1 to run RTTY with the FT1000MP. You will want to run the
input, output and PTT using the 5 pin Din connector. That would give you FSK
RTTY which allows you to use the any of the filters in the MP on the
incoming signal.

I built a simple circuit in a small box that allowed me to use a DB9 cable
from a COM port [actually a USB to COM adapter] to the box and then wires
from the Box to the 5 pin DIN. The wires to the 5 pin DIN are the FSK
control line and the PTT line. [I believe I had to invert the PTT line to
get things to work].

I used the rear audio output jack [not the speaker jack] as the source of
audio from the radio to the SL-1 and from the SL-1 to the sound card. The
only job of the SL-1 was to provide isolation between the radio and computer
which avoided hum. There was no requirement to power the SL-1 since I was
not using it to control the PTT lines. I have the SL-1 cable that allows you
to do make your own selection of connections to the SL-1. I wired mine to
use the rear audio output from the FT1000MP as the speaker input to the SL-1
on the cable. If you want to run PSK31 or something like that you will need
to wire the cable output to the microphone. I have the small header board
which allows me to easily select which of the lines are interconnected
between the computer and the radio by the Sl-1.

You probably will use MMTTY to control the RTTY receiving and transmitting.
As I recall there are some notes from people about how to make the
connections between the computer and the FT1000MP. The SL-1 is simply a pair
of transformers that isolate the radio and computer grounds for the audio
circuits. If you are a builder you can fabricate this isolation much cheaper
by buying the transformers from Mouser and assembling your own 'SL-1' type
interface. 

Tod, K0TO




> -----Original Message-----
> From: 1000mp-bounces at mailman.qth.net 
> [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of 
> nittner at comcast.net
> Sent: Wednesday, November 10, 2010 9:24 PM
> To: 1000mp at mailman.qth.net
> Subject: [1000mp] Signalink USB & 1000MP
> 
> Hi, I have not operated RTTY for years with my old CAM and 
> like to get back into it so I better ask to see which way is 
> best. I am planning on buying a Signalink USB and hook it to 
> my logging computer which runs Windows 95 . 
> I have an older FT1000MP and wonder which cable to get to 
> connect it to the radio.. 
> does it go into the 8pin mic plug or do I use the 5 pin DIN 
> packet connector on the rear of the MP. I would prefer the 
> rear but If Mic plug, then how do I switch over to SSB , do I 
> unplug it and screw the MIC back in? 
> I have looked at Tigertronics web site and they show both 
> plugs. The new plug and play jumper modules may look nice but 
> I think that the jumpers are easy to install. 
> 
> Another question is that they also have the SL-1+ which needs 
> to be powered wit 12V , How does that one compare to the USB 
> other than being plugged into a USB port of the computer I 
> have a USB port or serial port that I am not using. 
> 
> I hope that someone can point me in the right direction on 
> what to buy before I make a costly mistake. 
> thanks, Juergen N9RD 
> 
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