Some follow-up questions:
OK, I have the KX3 and K3 configured with the KPA500 and KAT500. Everything
seems to work with one little exception.
The exception:
--- initial conditions, K3 is on and switched to use the KPA500 and KAT500.
KX3 is off.
--- using K3 and so on works fine with amp on or with amp in standby.
--- I turn off K3. Leave KPA500 on but in STBY mode.
--- Switch coax from K3 to KX3 (1x2 switch).
--- Turn on KX3. KPA500 still in STBY mode.
--- Attempt to switch KPA500 to OPER from STBY but switch does not work.
If I power off the
KPA500 (front panel switch) and power back on then switch works fine.
I have experimented with all kinds of starting initial conditions and order of
events but whenever
the KPA500 is left on after using the K3 and then switching to the KX3, the
switch on the KPA500
to go from STBY to OPER does not work. I always have to cycle the power from
the front panel on/off
switch.
What have I done or am I doing wrong?
Note: all functionality works fine with this one exception. With the current
power settings from the KX3
I am getting about 135 watts output from the KPA500 into my hex beam and also
my 80-meter dipole.
SWR is about 1:1 TUNED via the KAT500 on dipole and I usually operate the hex
beam in bypass and this
has a 1.2:1 SWR or there abouts.
73, phil, K7PEH
On Apr 22, 2014, at 2:05 PM, Phil Hystad <phys...@mac.com> wrote:
> Don,
>
> Thanks. Clears everything up. I did find the key line interrupter. I had
> it in my Elecraft parts bin not knowing what to do with it when I got it.
> Now I know.
>
> 73, phil, K7PEH
>
>
>
> On Apr 22, 2014, at 1:43 PM, Don Wilhelm <w3...@embarqmail.com> wrote:
>
>> Phil,
>>
>> You need to put the Keyline Interrupter on the K3 ACC connector, then use
>> the RCA cable from the K3 KEYOUT jack to the KPA500.
>>
>> If you ordered the KPAK3AUX cable set, you have (or had) the Key Line
>> Interrupter. See
>> http://www.elecraft.com/manual/KPAK3AUX%20Cable%20Set%20Instructions.pdf.
>>
>> The KX3 must use the KeyIn of the KPA500, so the K3 must also use that same
>> keying scheme - the KPA500 has a conflict if both the KeyOut-LP line in the
>> ACC cable is connected at the same time as the RCA Keying cable from the K3,
>> and that is where the Keying Interrupter comes in.
>>
>> 73,
>> Don W3FPR
>>
>> On 4/22/2014 4:15 PM, Phil Hystad wrote:
>>> Fred or others...
>>>
>>> I am still a little confused on the diagram in KE7X's KX3 book about
>>> hooking up the KX3, K3, KPA500, and KAT500. My question regard the hookup
>>> diagram, figure 9.17, on page 147 on the KE7X KX3 book.
>>>
>>> Confusion is about keyline hookup. The diagram shows that both the K3 and
>>> the KX3 must be wired together (via a Y-adapter) in controlling keyline.
>>> Also, that a keyline interrupter is used in the KPAK3AUX cable between the
>>> K3 and the KAT500.
>>>
>>> Question: what is a keyline interrupter? Is this something I have (KX3
>>> cable kit) or is this something I make? I presume that this is used to
>>> block the keyline signal on the AUX cable thus forcing use of the K3
>>> keyline connection directly. Confirmation on this please.
>>>
>>> Question: if the K3 must be off when I am switched to use the KX3 driving
>>> the KPA500/KAT500 then why is this extra keyline hookup needed on the K3?
>>> I mean, if the K3 is off, what function does it supply. If the K3 is on
>>> and the KX3 is off then why not allow the K3 to control keyline via the AUX
>>> cable as it is doing right now (in my K3-KPA500-KAT500) configuration.
>>>
>>>
>>
>
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