[Elecraft] PR6-10 Poser, Cont'd

[W0MU]

Have you tried it in manual mode where power is applied at all times so 
you know the pre amp is working as expected?



On 6/16/2014 11:03 AM, Dauer, Edward wrote:
> Thanks Mike, Fred, and others . . .
>
> I will try the pin 11 mod though I fear that's not the problem, for three
> reasons.  Fred points out that pin 11 would keep the preamp on rather than
> off; second, having used a KAT (and a KPA) with the K3 since the KAT first
> came out, I've worked through the cabling business and had it all solved
> so far as the KAT is concerned.  And most convincing, one of my attempts
> was done with the K3 a cappella, so to speak -- I disconnected everything
> except the power supply and the antenna and the PR6-10, connecting only
> the unique 15-pin cable that was supplied with the PR6-10-- with the same
> result.
>
> Fred's book (2d Ed.) shows the block diagram of the PR6 (same as the 6-10,
> I assume) and the KVX3, but the examples use a separate antenna in ANT 2
> for the preamped band.  I have but one coax line coming into the shack for
> every band -- the antenna switch is remote, out where the antennas are.
> (Reduces the number of holes you have to drill in the house.)  That feed
> line is in the K3 at ANT 1, and ANT 1 is selected.  The plan was to keep
> just one feed line and select  the preamp in for ten meters and out for
> everything else.
>
> Am I trying to do something that's not possible?  Nothing I've seen in the
> Elecraft papers says anything about not using ANT 1 for everything
> including what the preamp is supposed to be preamping . . .
>
> Any further ideas?
>
> Tnx!
>
> Ted, KN1CBR
>
>
>> Hi Ted,
>>
>> If you are using a KPA500 and a PR6 you will have to remove pin 11 from
>> the
>> cable that goes to the KPA500. It has popped up on this reflector once or
>> twice but it is not mentioned in either the PR6 or the KPA500
>> instructions.
>> If you wonder if this will work just pull the 15 pin cable off of the
>> KPA500
>> and you'll see that the PR6 works as you would expect it to work.
>>
>> 73,
>> Mike K2MK
>>
>>
>> Dauer, Edward wrote
>>> I need to ask for help configuring a PR6-10 on the K3.  Installed OK,
>>> removed the internal jumper per instructions and am using the control
>>> line
>>> on a Y splitter to allow the KPA and KAT to connect to the K3 as well.
>>> Physically, all seems fine, and the K3, P3, KPA and KAT work just as
>>> they
>>> always did.
>>>
>>> Then to operate the pre-amp I configured digout1 to ?on? for 28 Mhz on
>>> the
>>> K3, per instructions.  OK so far.
>>>   
>>>
>>> The PR6-10 manual says ?Tap RX ANT to enable preamplifier.?  When I do
>>> so
>>> the noise level goes way down and the signals disappear, as if there
>>> were
>>> no antenna connected to the receiver.   Removing the power plug from the
>>> preamp made no difference in either mode ? RX ANT on or off.
>>>   
>>>
>>> I recall when building the K3 that there were elections to be made about
>>> antenna configurations when installing the sub receiver and/or
>>> the KXV3.  I also remember that there are a myriad of ways the antennas
>>> can be routed via the configuration menus.  I have a feeling that the
>>> elections and internal configurations I originally made in the K3 are
>>> not
>>> compatible with getting the PR6-10 to work simply by pressing RX ANT,
>>> but
>>> I can?t reason my way through it all.
>>>
>>>
>>> Ted, KN1CBR
>>
>>
>>
>>
>> --
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