[Yaesu] FT-1000D questions

[sabrams at nycap.rr.com]

I tried using the Band Data pins to switch an Alpha 76CA.  It worked great
for a short time, then blew the transistor. Be cautious.  73  Saul  K2XA
----- Original Message ----- 
From: "Steve Lawrence" <smlx at earthlink.net>
To: "Yaesu List" <yaesu at contesting.com>
Sent: Friday, January 23, 2004 3:36 PM
Subject: Re: [Yaesu] FT-1000D questions


> All - FYI. I sent this to John directly.
>
> I use my D to drive an Alpha 87A. The D's Band Data pin 2 goes to the
> Alpha's "Relay" RCA" Jack. Band Data pins 3 AND 8 are tied together and
> to the ground/shield. The internal D's TX relay is turned off.
> Effortless and quiet QSK results!
>
> Depending on which Alpha is driven, you may need an interface to
> protect the D's switching transistor. None is required for the D / 87A
> combo.
>
> More info at:
>
> http://www.alpha-amps.com/html/yaesu.htm
>
> 73, Steve WB6RSE
>
> ___________________________________________________________
>
> On Jan 23, 2004, at 10:12 AM, k3ky at erols.com wrote:
>
> Hi, John-
>
> I don't remember S3001 but I assume I might have that
> in my 1000D as well. I think the unmarked side has to
> be variable transmit power from about 5 to 200 watts,
> with the 50w side being a fixed output power level?
> Perhaps it is intended as a RTTY setting?
>
> Please be very careful if you decide to utilize the
> tx-on control line on the band data connector. It will
> indeed control an amp, but the oputput is only a
> fragile transistor good for about 100mA, as I recall.
> I would strongly recommend you build up an
> interface circuit to protect this tiny transistor.
> Those who have blown the transistor report that it
> is very difficult to get at the component to replace
> it. I believe the transistor is part of a 2-transistor
> device. Naturally, it is a tiny surface-mount
> component. I recommned that this output never
> be used in an attempt to directly switch an amp.
> 73, David K3KY
>
> On 23 Jan 2004 at 14:47, John Nelson wrote:
>
> > Last night I helped a friend fit a couple of Inrad filters to his
> > FT-1000D.
> > Looking on the lower main board, I noticed a switch marked 'S3001'
> > that has
> > '50W' against one position and nothing against the other. The switch
> > was set
> > to the unmarked position. It doesn't seem to be mentioned in the
> > owners'
> > manual - anyone know what it does?
> >
> > I also noticed that the owner was switching his Alpha amp via the 'Tx
> > GND'
> > socket and associated relay. I'd have thought it should be possible to
> > use
> > pins 2 and 3 on the BAND DATA output to achieve the same end -- is this
> > correct?
> >
> > Finally, I've heard various things about the quality of the tuning
> > upgrader
> > sold by International Radio. Any opinions one way or the other?
> >
> > 73 John
> > GW4FRX
> >
> >
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>
>
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