[Elecraft] Combo pre-amp
Eric Swartz - WA6HHQ, Elecraft
eric at elecraft.com
Tue May 28 18:10:00 EDT 2013
We are close to releasing the PR6-10. (Same case as the PR-10.)
Assembled PCBs are in-house and we need to test them and release the
manual. I'll post here when its ready for taking orders.
Eric
elecraft.com
On 5/26/2013 3:46 AM, Greg Wilson wrote:
> I hope Eric and Wayne are reading this one, Joe!
> 73, Greg-N4CC
>
> ----- Original Message ----- From: "Joe Subich, W4TV" <lists at subich.com>
> To: "Gary Gregory" <vk1zzgary at gmail.com>
> Cc: "elecraft List" <elecraft at mailman.qth.net>
> Sent: Saturday, May 25, 2013 11:04 PM
> Subject: Re: [Elecraft] Combo pre-amp
>
>
>>
>> I don't know about that ... the incremental cost for the KXV3A
>> vs. KXV3 was minimal. The firmware changes to support two more
>> control lines should be minimal.
>>
>> As far as an internal preamp - it should not be significantly more
>> complex than the PR6. With switching on a "KVX3B", an internal
>> preamp would not need the bypass relays so they could be used for
>> band switching if needed. However, if the user did not want a
>> 10/12 preamp, it would not be a stretch to use the existing PR6
>> internally for six meters only.
>>
>> One would think it relatively straightforward to switch two input
>> tuning/matching networks in a PR6 style preamp or an alternate,
>> broadband design could be used to completely avoid the need for
>> band switching. With a little care in the design and programming,
>> a higher gain/lower nf preamp could be substituted (electronically)
>> for the standard preamp or the controls could be arranged to cycle
>> through "none"/"norm"/"opt".
>>
>> 73,
>>
>> ... Joe, W4TV
>>
>>
>> On 5/25/2013 10:48 PM, Gary Gregory wrote:
>>> Ah Joe,
>>>
>>> Thankyou for resurrecting my thought that it IS possible. The issue
>>> will
>>> most likely be a lack of quantity that would be sold versus the cost to
>>> manufacture,
>>>
>>> I will live in hope...:-)
>>>
>>> thanks for the info Joe, much appreciated.
>>>
>>> 73
>>>
>>> Gary
>>>
>>> On 26 May 2013 12:45, Joe Subich, W4TV <lists at subich.com> wrote:
>>>
>>>>
>>>>> let's not let that technical inconvenience reduce in any
>>>>> way my hope for a cure to my sometimes demented desires....:-)
>>>>
>>>> I'm not saying it isn't possible ... takes one additional relay
>>>> and two connectors. There are even couple unused control lines
>>>> on the KXV3A that could be used to control the added relay and
>>>> switch bands (10/12 and 6 M) if necessary.
>>>>
>>>> 73,
>>>>
>>>> ... Joe, W4TV
>>>>
>>>>
>>>> On 5/25/2013 10:13 PM, Gary Gregory wrote:
>>>>
>>>>> Hi Joe,
>>>>>
>>>>> Gee...Shhhhh....let's not let that technical inconvenience reduce
>>>>> in any
>>>>> way my hope for a cure to my sometimes demented desires....:-)
>>>>>
>>>>> Of course you are quite correct Joe. Point taken mate.
>>>>>
>>>>> 73
>>>>>
>>>>> Gary
>>>>>
>>>>> On 26 May 2013 12:06, Joe Subich, W4TV <lists at subich.com> wrote:
>>>>>
>>>>>
>>>>>> So, I will continue to want an internal pre-amp and it does
>>>>>> not need
>>>>>>
>>>>>>> to be for 6M as I don't operate there either. This is MY choice and
>>>>>>> does not hold sway with the masses but it is my choice after all.
>>>>>>>
>>>>>>>
>>>>>> I agree that an internal preamp (or premps) would be ideal.
>>>>>> However,
>>>>>> in addition to the preamp(s) Elecraft would need to provide
>>>>>> *another*
>>>>>> design for the KXV3A - one that switches the RX ANT IN/OUT
>>>>>> connections
>>>>>> to internal jacks - as neither the original KXV3 or current KXV3A
>>>>>> have
>>>>>> that capability.
>>>>>>
>>>>>> 73,
>>>>>>
>>>>>> ... Joe, W4TV
>>>>>>
>>>>>>
>>>>>> On 5/25/2013 9:24 PM, Gary Gregory wrote:
>>>>>>
>>>>>> I don't wish to flog a dead horse any further, however, choice is
>>>>>>> something
>>>>>>> it seems everyone on this list is after.
>>>>>>>
>>>>>>> So what if a K3 needs to NOT have a 2M transverter to fit a combo
>>>>>>> pre-amp?....there are many K3's in the world not fitted with 2M.
>>>>>>> This
>>>>>>> is a
>>>>>>> choice made by the original owner I guess which is what it is, a
>>>>>>> choice. I
>>>>>>> fully appreciate everyone's point of view, but I would hazard a
>>>>>>> guess I
>>>>>>> am
>>>>>>> not alone in wanting an internal unit as a CHOICE, not at the
>>>>>>> expense of
>>>>>>> taking away other folks right to choose.
>>>>>>>
>>>>>>> Wayne has stated Elecraft's case and that is there is not enough
>>>>>>> room
>>>>>>> but
>>>>>>> his statement is qualified by the mention of the 2M option which
>>>>>>> is a
>>>>>>> customer choice right?
>>>>>>>
>>>>>>> So, I will continue to want an internal pre-amp and it does not
>>>>>>> need to
>>>>>>> be
>>>>>>> for 6M as I don't operate there either. This is MY choice and
>>>>>>> does not
>>>>>>> hold
>>>>>>> sway with the masses but it is my choice after all.
>>>>>>>
>>>>>>> You mention remote install, fine, but again it is still another
>>>>>>> cable
>>>>>>> and
>>>>>>> still yet another box to cart around. Setup on a table (standard
>>>>>>> picnic
>>>>>>> size) the depth of the table means you need to have the K-Line
>>>>>>> right on
>>>>>>> the
>>>>>>> rear edge and the 6M pre-amp protrudes far enough back that if
>>>>>>> you are
>>>>>>> up
>>>>>>> against a barrier of some sort, the cables push the K-Line
>>>>>>> forward and
>>>>>>> reduce the work space area such that little room is left to
>>>>>>> operate in a
>>>>>>> comfortable manner.
>>>>>>>
>>>>>>> I could pontificate forever on the drawbacks when operating
>>>>>>> portable
>>>>>>> but I
>>>>>>> am probably not a member of the right choir.
>>>>>>>
>>>>>>> Maybe an OEM will come up with a 'plug-in' internal 10M pre-amp
>>>>>>> designed
>>>>>>> for a K3.....now that would solve everything for me and I
>>>>>>> wouldn't have
>>>>>>> to
>>>>>>> plead my case....:-)
>>>>>>>
>>>>>>> It's all about choice folks!
>>>>>>>
>>>>>>> 73
>>>>>>>
>>>>>>> Gary
>>>>>>>
>>>>>>> On 26 May 2013 10:32, Walter Underwood <wunder at wunderwood.org>
>>>>>>> wrote:
>>>>>>>
>>>>>>> The original poster mentioned "those of us who operate
>>>>>>> portable".
>>>>>>> Running
>>>>>>>
>>>>>>>> cables to the next room does not make that any simpler.
>>>>>>>>
>>>>>>>> wunder
>>>>>>>> K6WRU
>>>>>>>>
>>>>>>>> On May 25, 2013, at 5:13 PM, Dr. William J. Schmidt, II wrote:
>>>>>>>>
>>>>>>>> This sounds like a lack of creative thinking. How about
>>>>>>>> using two 90
>>>>>>>>
>>>>>>>>>
>>>>>>>>> degree
>>>>>>>>
>>>>>>>> BNC elbows on the back of the radio and a couple of BNC
>>>>>>>> jumpers. You
>>>>>>>>> can
>>>>>>>>> put the preamp anywhere... even in the next room is that is your
>>>>>>>>> fancy.
>>>>>>>>> Also, you might try one of the 50+ preamps that are already
>>>>>>>>> available
>>>>>>>>> by
>>>>>>>>>
>>>>>>>>> a
>>>>>>>>
>>>>>>>> variety of companies with ultra-low noise figures. I'm not
>>>>>>>> sure I
>>>>>>>>> need
>>>>>>>>> a
>>>>>>>>> preamp to take up the space of my existing 2 meter module.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
>>>>>>>>>
>>>>>>>>> Owner - Operator
>>>>>>>>> Big Signal Ranch
>>>>>>>>> Staunton, Illinois
>>>>>>>>>
>>>>>>>>> email: bill at wjschmidt.com
>>>>>>>>>
>>>>>>>>> -----Original Message-----
>>>>>>>>> From:
>>>>>>>>> elecraft-bounces at mailman.qth.****net<elecraft-bounces at mailman.*
>>>>>>>>> *qth.net <elecraft-bounces at mailman.qth.net>>
>>>>>>>>> [mailto:elecraft-bounces@**mai**lman.qth.net
>>>>>>>>> <http://mailman.qth.net>
>>>>>>>>> <elecraft-bounces@**mailman.qth.net<elecraft-bounces at mailman.qth.net>
>>>>>>>>>
>>>>>>>>>> ]
>>>>>>>>> On Behalf Of Jeff Cochrane
>>>>>>>>> Sent: Saturday, May 25, 2013 7:03 PM
>>>>>>>>> To: elecraft at mailman.qth.net
>>>>>>>>> Subject: Re: [Elecraft] Combo pre-amp
>>>>>>>>>
>>>>>>>>> Agreed Gary,
>>>>>>>>> I too would be interested in an internal 10M pre-amp (or an
>>>>>>>>> internal
>>>>>>>>>
>>>>>>>>> combo
>>>>>>>>
>>>>>>>> 6-10M pre-amp).
>>>>>>>>> I already have the PR6 but like you say it (in stock form)
>>>>>>>>> protrudes
>>>>>>>>> so
>>>>>>>>>
>>>>>>>>> far
>>>>>>>>
>>>>>>>> out behind the rig that it almost impossible to use for
>>>>>>>> portable work.
>>>>>>>>> Mounting it internally is the way to go and I reckon a combo
>>>>>>>>> pre-amp
>>>>>>>>>
>>>>>>>>> would
>>>>>>>>
>>>>>>>> sit nicely where the internal 2M transverter normally goes.
>>>>>>>>>
>>>>>>>>> Jeff Cochrane - VK4XA
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Gary Gregory-2 wrote
>>>>>>>>>
>>>>>>>>> Well I do hope there will be a version for 10M perhaps that
>>>>>>>>> will
>>>>>>>>>> install
>>>>>>>>>> within the K3. Much as it would be nice to have I am not
>>>>>>>>>> going to buy
>>>>>>>>>>
>>>>>>>>>> more
>>>>>>>>>
>>>>>>>>
>>>>>>>> boxes needing to be plugged in, cabled or whatever.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Whilst I understand some folks have space available and can
>>>>>>>>>> wire in
>>>>>>>>>> as
>>>>>>>>>> many
>>>>>>>>>> boxes as are available, those of us who operate portable tire
>>>>>>>>>> very
>>>>>>>>>>
>>>>>>>>>> quickly
>>>>>>>>>
>>>>>>>>
>>>>>>>> of sorting cables, boxes and the resultant tangled leads.
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> I guess I will have to wait and see what is produced but another
>>>>>>>>>>
>>>>>>>>>> external
>>>>>>>>>
>>>>>>>>
>>>>>>>> box such as the 6M pre-amp which protrudes too far and can
>>>>>>>> easily be
>>>>>>>>>
>>>>>>>>>> knocked around is a non starter for me no matter that I could
>>>>>>>>>> use it,
>>>>>>>>>> it
>>>>>>>>>> is
>>>>>>>>>> what it is, a box too far.
>>>>>>>>>>
>>>>>>>>>> Gary
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> *Gary - VK1ZZ
>>>>>>>>>> Skype: Gary.VK1ZZ
>>>>>>>>>> Motorhome Portable
>>>>>>>>>> The Shack*
>>>>>>>>>> *Elecraft K3
>>>>>>>>>> P3 Panadapter
>>>>>>>>>> KPA500FT
>>>>>>>>>> KAT500FT**
>>>>>>>>>> KX3-K
>>>>>>>>>> *
>>>>>>>>>> ______________________________****____________________________**
>>>>>>>>>> __**__
>>>>>>>>>> Elecraft mailing list
>>>>>>>>>> Home:
>>>>>>>>>> http://mailman.qth.net/****mailman/listinfo/elecraft<http://mailman.qth.net/**mailman/listinfo/elecraft>
>>>>>>>>>> <http**://mailman.qth.net/mailman/**listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>> Help:
>>>>>>>>>> http://mailman.qth.net/mmfaq.****htm<http://mailman.qth.net/mmfaq.**htm>
>>>>>>>>>> <http://mailman.qth.net/**mmfaq.htm<http://mailman.qth.net/mmfaq.htm>
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>> Post: mailto:
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Elecraft at .qth
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> This list hosted by: http://www.qsl.net
>>>>>>>>>> Please help support this email list:
>>>>>>>>>> http://www.qsl.net/donate.html
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -----
>>>>>>>>> Jeff Cochrane - VK4XA
>>>>>>>>> East Innisfail
>>>>>>>>> Queensland
>>>>>>>>> Australia
>>>>>>>>> K3 #4767
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> View this message in context:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> http://elecraft.365791.n2.**na**bble.com/Combo-pre-amp-**<http://nabble.com/Combo-pre-amp-**>
>>>>>>>>>
>>>>>>>>>
>>>>>>>> tp7573740p7574221.html<http://**elecraft.365791.n2.nabble.com/**
>>>>>>>> Combo-pre-amp-**tp7573740p7574221.html<http://elecraft.365791.n2.nabble.com/Combo-pre-amp-tp7573740p7574221.html>
>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>>> Sent from the Elecraft mailing list archive at Nabble.com.
>>>>>>>>> ______________________________****____________________________**
>>>>>>>>> __**__
>>>>>>>>> Elecraft mailing list
>>>>>>>>> Home:
>>>>>>>>> http://mailman.qth.net/****mailman/listinfo/elecraft<http://mailman.qth.net/**mailman/listinfo/elecraft>
>>>>>>>>> <http**://mailman.qth.net/mailman/**listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Help:
>>>>>>>>> http://mailman.qth.net/mmfaq.****htm<http://mailman.qth.net/mmfaq.**htm>
>>>>>>>>> <http://mailman.qth.net/**mmfaq.htm<http://mailman.qth.net/mmfaq.htm>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Post: mailto:Elecraft at mailman.qth.****net
>>>>>>>>> <Elecraft at mailman.qth.net>
>>>>>>>>>
>>>>>>>>> This list hosted by: http://www.qsl.net
>>>>>>>>> Please help support this email list:
>>>>>>>>> http://www.qsl.net/donate.html
>>>>>>>>>
>>>>>>>>> ______________________________****____________________________**
>>>>>>>>> __**__
>>>>>>>>> Elecraft mailing list
>>>>>>>>> Home:
>>>>>>>>> http://mailman.qth.net/****mailman/listinfo/elecraft<http://mailman.qth.net/**mailman/listinfo/elecraft>
>>>>>>>>> <http**://mailman.qth.net/mailman/**listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Help:
>>>>>>>>> http://mailman.qth.net/mmfaq.****htm<http://mailman.qth.net/mmfaq.**htm>
>>>>>>>>> <http://mailman.qth.net/**mmfaq.htm<http://mailman.qth.net/mmfaq.htm>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>> Post: mailto:Elecraft at mailman.qth.****net
>>>>>>>>> <Elecraft at mailman.qth.net>
>>>>>>>>>
>>>>>>>>> This list hosted by: http://www.qsl.net
>>>>>>>>> Please help support this email list:
>>>>>>>>> http://www.qsl.net/donate.html
>>>>>>>>>
>>>>>>>>>
>>>>>>>> --
>>>>>>>> Walter Underwood
>>>>>>>> wunder at wunderwood.org
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> ______________________________****____________________________**__**__
>>>>>>>>
>>>>>>>> Elecraft mailing list
>>>>>>>> Home:
>>>>>>>> http://mailman.qth.net/****mailman/listinfo/elecraft<http://mailman.qth.net/**mailman/listinfo/elecraft>
>>>>>>>> <http**://mailman.qth.net/mailman/**listinfo/elecraft<http://mailman.qth.net/mailman/listinfo/elecraft>
>>>>>>>>
>>>>>>>>>
>>>>>>>> Help:
>>>>>>>> http://mailman.qth.net/mmfaq.****htm<http://mailman.qth.net/mmfaq.**htm>
>>>>>>>> <http://mailman.qth.net/**mmfaq.htm
>>>>>>>> <http://mailman.qth.net/mmfaq.htm>
>>>>>>>>>
>>>>>>>> Post: mailto:Elecraft at mailman.qth.****net
>>>>>>>> <Elecraft at mailman.qth.net>
>>>>>>>>
>>>>>>>> This list hosted by: http://www.qsl.net
>>>>>>>> Please help support this email list:
>>>>>>>> http://www.qsl.net/donate.html
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>
>>>>>
>>>
>>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft at mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
More information about the Elecraft
mailing list