[Elecraft] PR6 Clarification
iain macdonnell - N6ML
ar at dseven.org
Tue Apr 16 11:50:18 EDT 2013
Hi Fred,
I'm not sure I completely understand your question, but my PR6 is on
all the time (it is not connected to the K3's ACC port), and I just
use RX ANT on 6m to bring it in-line. This is not a problem for me,
since I do not have any other RX ants that I need to feed through the
PR6 for other bands. AFAIK, this is a "supported configuration".
73,
~iain / N6ML
On Tue, Apr 16, 2013 at 7:44 AM, Cady, Fred <fcady at ece.montana.edu> wrote:
> Hey, Ian (and others),
> What do you think about having the PR6 powered-up and controlled-on with DIGOUT1 while on another band with RX ANT not enabled? It looks like the PR6 input and outputs are floating. Do you think that is a problem for the PR6?
>
> Fred
>
>
> Fred Cady
> fcady at ieee dot org
>
>> -----Original Message-----
>> From: dseven at dseven.org [mailto:dseven at dseven.org] On Behalf Of iain
>> macdonnell - N6ML
>> Sent: Tuesday, April 16, 2013 7:55 AM
>> To: Jim Miller
>> Cc: Cady, Fred; Elecraft Reflector
>> Subject: Re: [Elecraft] PR6 Clarification
>>
>> On Tue, Apr 16, 2013 at 5:31 AM, Jim Miller <jim at jtmiller.com> wrote:
>> > It seems like it would be an easy thing to implement in the KPA500.
>> Per
>> > Band Standby.
>>
>> Good idea - why didn't I think of it? Oh, wait, I did :)
>>
>> http://elecraft.365791.n2.nabble.com/KPA500-feature-suggestion-band-
>> bypass-td6247211.html
>>
>> Hasn't transpired so-far, though....
>>
>> 73,
>>
>> ~iain / N6ML
>>
>>
>> > On Mon, Apr 15, 2013 at 11:18 PM, Cady, Fred <fcady at ece.montana.edu>
>> wrote:
>> >
>> >> Hi Jim,****
>> >>
>> >> What I'd like to be able to do is to disable the amp on some bands
>> (e.g.
>> >> 30 m), by asserting (low) DIGOUT1 (and setting KPA500 INHIB IN to
>> ENABLE)
>> >> but to have the amp enabled for 6m when DIGOUT1 is low to turn on
>> the PR6.
>> >> I'm just lazy, that's all. Plus it's fun to think about!****
>> >>
>> >> Cheers,****
>> >>
>> >> Fred****
>> >>
>> >> ** **
>> >>
>> >> ** **
>> >>
>> >> Fred Cady
>> >> fcady at ieee dot org ****
>> >>
>> >> *From:* jtmiller47 at gmail.com [mailto:jtmiller47 at gmail.com] *On
>> Behalf Of *Jim
>> >> Miller
>> >> *Sent:* Monday, April 15, 2013 8:52 PM
>> >> *To:* Cady, Fred
>> >>
>> >> *Cc:* Elecraft Reflector
>> >> *Subject:* Re: [Elecraft] PR6 Clarification****
>> >>
>> >> ** **
>> >>
>> >> I'm not getting the importance of a Pin 11 solution. I just disable
>> the
>> >> KPA500 sensing of that pin by the menu selection. I don't see the
>> need for
>> >> it.****
>> >>
>> >> ****
>> >>
>> >> I'm definitely running the KPA500 on 6m.****
>> >>
>> >> ****
>> >>
>> >> If for some strange reason Pin 11 is asserted it just causes the
>> KPA500 to
>> >> be inhibited, not turned on, which is a failsafe direction.****
>> >>
>> >> ****
>> >>
>> >> 73****
>> >>
>> >> ****
>> >>
>> >> jim ab3cv****
>> >>
>> >> ** **
>> >>
>> >> On Mon, Apr 15, 2013 at 9:50 PM, Cady, Fred <fcady at ece.montana.edu>
>> wrote:
>> >> ****
>> >>
>> >> Ahh, looking back at my notes I see the other solution would be to
>> make
>> >> the KPA500 INHIBIT IN be per/band. But you would still have to take
>> care of
>> >> not turning on the PR6 when DIGOUT1 is low with some external logic
>> if you
>> >> cared about that.
>> >>
>> >> KE7X****
>> >>
>> >>
>> >> Fred Cady
>> >> fcady at ieee dot org****
>> >>
>> >> > -----Original Message-----
>> >> > From: elecraft-bounces at mailman.qth.net [mailto:elecraft-****
>> >>
>> >> > bounces at mailman.qth.net] On Behalf Of Cady, Fred
>> >> > Sent: Monday, April 15, 2013 7:42 PM
>> >> > To: 'Elecraft Reflector'
>> >> > Subject: Re: [Elecraft] PR6 Clarification
>> >> >
>> >> > K4RX's inhibit line inhibiter for pin 11 is the same idea as the
>> >> > keyline inhibiter for pin 10. However, it is not really needed
>> because
>> >> > one can set the KPA500 INHIB IN menu to DISABLE so a low on pin 11
>> will
>> >> > not inhibit the amp accomplishing the same thing as pulling pin 11
>> from
>> >> > the connector. Of course pulling the pin is a fail-safe solution.
>> What
>> >> > is really needed is some logic that blocks pin 11 from the KPA for
>> 6m
>> >> > (assuming you want the amp on for 6) and passes it for the other
>> bands.
>> >> > That way you could inhibit the amp on, say, 30 m or other bands
>> where
>> >> > there might not be a good match. I worked up a circuit to do this
>> once
>> >> > upon a time and should dust it off again.
>> >> > 73,
>> >> > Fred
>> >> >
>> >> >
>> >> > Fred Cady
>> >> > fcady at ieee dot org
>> >> > "The Elecraft K3: Design, Configuration, and Operation Second
>> Edition"
>> >> >
>> >> > BTW, www.Lulu.com has a 20% discount (APRILBOOKS13) good this
>> month and
>> >> > 15% off (POURING) until April 19th.
>> >> >
>> >> > > -----Original Message-----
>> >> > > From: elecraft-bounces at mailman.qth.net [mailto:elecraft-
>> >> > > bounces at mailman.qth.net] On Behalf Of Jim Miller
>> >> > > Sent: Monday, April 15, 2013 7:25 PM
>> >> > > To: Terry Posey
>> >> > > Cc: Elecraft Reflector
>> >> > > Subject: Re: [Elecraft] PR6 Clarification
>> >> > >
>> >> > > I believe the Key line interrupter interrupts pin 10 rather than
>> pin
>> >> > 11
>> >> > > after reviewing the K3 and KPA manual. I don't use the Pin 11
>> option
>> >> > on
>> >> > > the
>> >> > > KPA (it's disabled) rather use the keyline interrupter and RCA
>> jack
>> >> > > cabling
>> >> > > to interface all the keying interruption which includes my
>> antenna
>> >> > > switch.
>> >> > >
>> >> > > Thanks for your concern and don't hesitate to correct me if I've
>> made
>> >> > > an
>> >> > > incorrect assessment.
>> >> > >
>> >> > > 73
>> >> > >
>> >> > > jim ab3cv
>> >> > >
>> >> > >
>> >> > > On Mon, Apr 15, 2013 at 9:06 PM, Terry Posey
>> <tposey at nettally.com>
>> >> > > wrote:
>> >> > >
>> >> > > > Hi Jim -
>> >> > > >
>> >> > > > You are well on your way to 6m success with the
>> >> > K3/KPA500/KAT500/PR6
>> >> > > line
>> >> > > > up. However, there is one more issue you will need to address
>> in
>> >> > > your
>> >> > > > cabling system. The K3's Digout1 signal is asserted on the
>> PIN 11
>> >> > of
>> >> > > the
>> >> > > > AUX cable. That presents a conflict with the KPA500 INHIBIT
>> on PIN
>> >> > > 11 on
>> >> > > > the cable bus between the K3, PR6, KPA500, and KAT500. PIN 11
>> >> > needs
>> >> > > to be
>> >> > > > "interrupted" before passing the Digout1 signal onto the
>> KPA500 and
>> >> > > KAT500,
>> >> > > > yet still sending the PIN 11 Digout1 signal to the PR6.
>> >> > > >
>> >> > > > I purchased a HD15 male/female "port saver" adapter from the
>> Web
>> >> > ($5)
>> >> > > and
>> >> > > > removed PIN 11 with pliers. Install the "Y" cable at the K3
>> ACC
>> >> > > port, then
>> >> > > > connect the PR6 to one side of the "Y" cable. Install the PIN
>> 11
>> >> > > > interrupter "port saver" adapter on the other side of the "Y"
>> cable
>> >> > > and
>> >> > > > attach the HD15 cable connections to the KPA500 and the
>> KAT500.
>> >> > > >
>> >> > > > I hope this helps.
>> >> > > >
>> >> > > > 73,
>> >> > > > Terry K4RX
>> >> > > >
>> >> > > >
>> >> > > > I'm just getting going on 6m with my K3/KPA500/KAT500. I'm
>> getting
>> >> > > ready to
>> >> > > > order a M2 6M5XHP. My feedline consists of 150ft of LDF5-50 to
>> the
>> >> > > tower
>> >> > > > then about 40ft of Buryflex in the tower run and various
>> pigtails.
>> >> > So
>> >> > > my
>> >> > > > feedline losses should be relatively low.
>> >> > > >
>> >> > > > Based on various threads I've decided to go ahead and get the
>> PR6
>> >> > but
>> >> > > want
>> >> > > > to make sure I understand how to use it. It appears that it is
>> >> > > bypassed
>> >> > > > completely by the K3 on the transmit path to the KPA100 which
>> then
>> >> > > goes to
>> >> > > > the KPA500 and KAT500 then to the antenna.
>> >> > > >
>> >> > > > On receive the path back from the KPA/KAT is passed thru the
>> PR6
>> >> > > > automatically as long as it is powered and the RXAnt is
>> selected
>> >> > for
>> >> > > 6m.
>> >> > > >
>> >> > > > So no fancy additional cabling required other than
>> Power/Digout1
>> >> > and
>> >> > > the
>> >> > > > RXin/RXout pair.
>> >> > > >
>> >> > > > My Beverages will just connect now through the PR6 supplied
>> input.
>> >> > > >
>> >> > > > All good?
>> >> > > >
>> >> > > > Jim ab3cv
>> >> > > >
>> >> > > >
>> >> > > >
>> >> > > ______________________________________________________________
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>> >> ** **
>> >>
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