[1000mp] FT-1000MP FSK cable

[John Passaneau]

Hi all:

I use FSK on RTTY with my Field. Works very nice, now that I have the serial 
port problem taken care of. I have one the more modern computers with only 
one serial port. I have a whole bunch of things in the shack that want 
serial ports . So I have 4 USB to serial adapters of various makes plugged 
in. I put in a battery backup device for the computer and the automatic shut 
program demanded to be on com 1, my only "real" serial port. So I moved my 
FSK to one of the USB serial ports. The PTT  "push to type" switch worked 
well, but I was having a hard time making a contact, finely someone told me 
that he couldn't copy me as my signal was garbled and my baud rate looked 
like it was over 100 baud. After a lot of digging it seems that most, if not 
all USB to serial port adapters have a problem. The UARTS in them have a 
hard time handling 45 baud, 5 bit code. As most software toggles the 
transmit data line to do FSK this means that most USB to serial adapters 
CAN"T be used to drive a FSK adapter, or for sure the 3 different brands I 
have can't. I dumped the battery backup software and moved the FSK adapter 
back to the "real" serial port and all works as it should.
By the way I like using 2N7000 MOSFET's for my switches, They are much more 
rugged, pulls the voltage on the lines in the Mark V field lower, needs very 
little current from the source to switch, and doesn't cost any more than a 
general purpose transistor

John Passaneau
State College Pa.
w3jxp at adelphia.net.
----- Original Message ----- 
From: "Bob LaFont" <bob.lafont at gmail.com>
To: "'All about Yaesu 1000mp'" <1000mp at mailman.qth.net>
Sent: Tuesday, October 03, 2006 9:11 PM
Subject: RE: [1000mp] FT-1000MP FSK cable


> Rod,
>
> This is a very easy interface to make if you save a few bucks:
>
> http://www.aa5au.com/rttyinterface.html
>
> 73-Bob
> WA2MNO
>
>
>> -----Original Message-----
>> From: 1000mp-bounces at mailman.qth.net
>> [mailto:1000mp-bounces at mailman.qth.net] On Behalf Of W70m at aol.com
>> Sent: Tuesday, October 03, 2006 7:12 PM
>> To: 1000mp at mailman.qth.net
>> Subject: [1000mp] FT-1000MP FSK cable
>>
>> Does someone make a FSK cable to interface with the rear
>> panel FSK DIN connector and a computer DB-9?
>>
>> Thanks and 73
>>
>> Rod W7OM
>> ______________________________________________________________
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>
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