http://elecraft.85.s1.nabble.com/Need-help-operating-K3-with-Yaesu-Quadra-amplifier-tp3643590p3644155.html
> From:
[hidden email] <
[hidden email]>
> Subject: [Elecraft] Need help operating K3 with Yaesu Quadra amplifier
> To:
[hidden email]
> Date: Monday, September 14, 2009, 11:26 AM
> I'm trying to find the correct
> sequence of steps to make
> sure my new Quadra amplifier is correctly adjusted to my
> K3. I have it hooked through the Band-Data1 8-pin cable
> and the Quadra does change bands correctly as it tracks
> the K3. The Quadra also switches to the correctly
> programmed input and/or output spigots. All that is
> fine.
>
> Taken from the Quadra Operating Manual, "Drive power
> must be at least 50 watts for accurate SWR detection,
> and 70 to 80 watts for optimum tuner performance."
>
> The problem is primarily in keying the K3 properly to allow
>
> the Quadra's antenna tuner to adjust properly. The
> Quadra requires 70-80 watts to tune correctly so I need to
>
> key the K3 with the TUNE button which puts out 5 watts
> as it's set up. (I realize that I could reset the TUNE
> output
> to start at a higher rate but surely that's not the best
> way)
> Otherwise, I must press TUNE, crank the PWR knob from
> the 5 watts up to 70-80 watts, then press the TUNE button
> on the Quadra but the amplifier keys for about a second
> as the tuner starts to tune, then drops out, displaying
> the
> message "ERROR" on the display. Now I'm back to 5
> watts on the K3 again so after pressing the K3's TUNE
> button again I must crank on the PWR knob again (which
> is about 4 full revolutions). For as many times as I try
>
> this, the K3 will not stay keyed up long enough for the
> Quadra to tune the antenna. BTW - I don't see any error
> messages from the K3 during this time.
>
> Using the same amplifier but with my IC-756PRO as a
> driver [in RTTY mode at about 70 watts -- with no physical
>
> connections for band changing] it reads the
> frequency/band and automatically changes bands and I
> can press the Quadra's TUNE button and it tunes up
> perfectly. Quickly, painlessly and correctly -- one easy
> operation which takes, at most, about 5 seconds.
>
> Realizing that all is normal with the Quadra, tuner and
> antenna I switch the input of the Quadra back to the K3
> (which changes the PTT, ALC and RF input lines), then I
> try the K3 TUNE again. I crank up the PWR knob from 5
> watts to 70-80 watts, press the Quadra's TUNE button but
> I see the same thing: it trys to tune for about a second,
>
> then drops back with the "ERROR" message. The K3 just
> doesn't seem to want to stay in TUNE mode (which is
> displaying CW) until the amplifier tuner can complete its
> job. [It's not because it got tuned up properly with the
> PRO as the Quadra will always reinitiate a tune when so
> instructed with the TUNE button]
>
> I've read everything I can find on hooking up the Quadra,
> both to the K3 and to other transceivers. There's LOTS of
>
> excellent documentation out there and I appreciate all the
>
> work from those folks. I'm relatively sure that my
> hookup
> between the two is fine.
>
> I guess what I'm asking is -- What are the steps used by
> other K3/Quadra users to change a band and make sure
> the Quadra's tuner is properly tuned. What am I missing
>
> to keep the K3 transmitting until the Quadra can complete
> its tune operation? It's just so easy with the PRO and so
>
> hard with the K3, but perhaps it's something I'm
> overlooking or doing incorrectly (<-- major
> possibility)
>
> BTW - The Quadra will memorize the tuning positions for
> various frequencies for different antennas so I guess I
> could let the IC-756PRO to do all the set up but I'm trying
>
> to wean myself away from the 756PRO and do everything
> on my K3. The K3 shines in SO MANY places, it just
> should be able to be easy here too.
>
> Also, last week on the
>
[hidden email],
> a fellow presented
> a wonderful document listing, for someone else, on the
> steps to tune up the Quadra to a couple of different
> transceivers. It looked so neat and I thought it was
> exactly what I needed. Unfortunately, it did not work for
>
> my K3/Quadra combination............. rats!
>
> Sorry for the long note but is there any hope for me?
> .......
> let me re-phrase that ---- is there any HELP for me?
>
> Thanks and 73,
> Jim - K5LAD
>
>
>
> -------------------------------------------------------------
>
> Growing old is like being increasingly
> penalized for a crime you haven't committed.
> -- Anthony Powell
> -----------------------------------------------------------
> Visit my web page at:
> www.hayseed.net/~jpk5lad/
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