According to the schematics, the Quadra does not have the internal
pullups like the FL-7000 does (the FL-7000 is known to work with the
K3) . I finally got out my Quadra tech supplement during a lull in
yesterday's RTTY contest and and traced out the band data lines. No
pullups, and the schematic even shows "test point" 0 volts is present
on all. This morning I verified 0 volts on all the band data lines
from the Quadra with my meter.
In contrast, the FL-7000 schematic
( http://www.n4ats.com/downloads/FL7000_Schematic.pdfclearly ) shows
10K pullups to a +5 volt regulator. At least one guy has his FL-7000
working, and this might explain it.
I just ordered one DB15HD breakout board (
http://www.winfordeng.com/products/brk15hd.php ) and will make up a
new cable with pullups. My first attempt was just connector to
connector through 2 ft of 8 conductor cat-5 cable, and there is
simply not enough space inside those connectors to build a pullup
circuit, I think. That breakout board should give enough space for
all I need, including the FSK line and ALC. It also has screw
terminals, which should make it somewhat easier to patch it all together.
Dimensions are in question - the board is wider than I have clear
space for at the back of the K3, and I may have to trim off a portion
of the board to clear the nearby DB9 socket.
It should be here Wednesday/Thursday, and I will report again when I
check the fit and get it wired up. If it fits, it looks like a good
solution to the problem of connecting up to all those dozen or so
pins in the DB15HD that I need. It is a little pricey at $16 + 5.50 shipping.
Jerry W4UK
At 02:39 AM 6/16/2008, Joe Subich, W4TV wrote:
Jerry,
How did you wire your interface?
Did you use "Band Data 1" (DIN8/262) or "Band Data 2" (DB15)
on the Quadra?
What are the symptoms ("No go")?
Remember, the pin numbering on "Band Data 1" (DIN8/262) is
different than the standard DIN8 - pin 6 on the standard
connector is pin 7 ("D") on the 262, pin 7 on the standard
is 8 (inhibit) on the 262, and pin 8 on the standard is 6
("C") on the 262
My Quadra is still in storage ... I have not hooked it up
yet but may cobble together a cable this week to try it.
73,
... Joe, W4TV
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Jerry Flanders
> Sent: Saturday, June 14, 2008 1:30 PM
> To: [email protected]
> Cc: [EMAIL PROTECTED]
> Subject: [Elecraft] K3 and Quadra amp
>
>
> Anybody have the band data cable working? I carefully wired mine up
> but no go. Sure would be nice to KNOW it can be made to work.
>
> Jerry W4UK
>
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