[GreenKeys] ST-6 stuff

Thu, 5 Jun 2003 06:57:32 -0500

Larry,
I'll bet the RS-232 was added by someone for using one of the many RTTY
software programs of the 80's or later.  I've seen several attempts at that.
Your "serial numberless" one sounds like one of the kits that were sold, and
the owner likely hooked up only what he wanted.  I have one like that
myself!!  See you on 20m, sounds like you have the ST-6 under control!
73,
Don, WB5HAK
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Thursday, June 05, 2003 12:24 AM
Subject: [GreenKeys] ST-6 stuff


> Thanks to all who responded to my comments about the levels to and from
> the radio out of the ST-6.
>
> I know that there are supposed to be a pair of RCA jacks on the back of
> the unit marked 20 mV and 150 MV for AFSK output.  I t does have an FSK
> jack tho.  My first ST-6 had that and i used the 20 MV output to drive
> the Drake t-4X.  Fine transmitter for Rtty i might add as was the R4B
> for reception.  Should never have sold that pair.  Anyway......
>
> Strangely on the back of this unit there are no RCA jacks or anything
> else for AFSK output.  How about them apples!  Yep, i agree that there
> have been numerous versions of the unit, some with and some without.
> This one doesn't even have a SN stamped or marked on the back
> dataplate.  Makes me wonder.  However it does have an RS-232 connector
> mounted just under the lip of the lid on the back panel.  Thats probably
> where the AFSK comes out although i haven't chased any wiring to/from it
> yet.  Actually never gave it a thought.  I'm sure there is an AFSK board
> inside the unit.  It was the board farthest to the left when looking at
> it from the front.
>
> I do have the manual for i think at least 2 different versions of it abd
> an extra XTK-100 board if it turns out that i need it.  In the meantime
> i'll have to pull it out of operation (receive only at this time) to
> chase the wiring from the AFSK board to see where its going.  At the
> very least if necessary i'll drill a hole in the back panel and mount an
> RCA jack then run a piece of coax to it like its supposed to be.  Be
> interesting to see what the RS-232 jack is wired to and how.
>
> Like i said before, if worse comes to worse i'll run FSK instead of
> AFSK.  You'll never know the difference.
>
> Thanks all for the responses and suggestions.
>
> On another note, i did find a store locally in Phoenix that has the
> fuses necessary to repair the IRL-FSK-1000.  They are a 3AGX 1/4 amp X
> 250V 8AG.  DIgikey also has them.  Next will be to get an adapter of
> some sort to convert the Dovetron loop keying circuit from + - 12V to
> the HV 60 ma loop current.  Then i'll be TU poor!!!!!!
>
> Larry
> W0OGH
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