[Elecraft] KPA500 Multiple Antenna Option

[Johnny Siu]

Hello Gary,
 
Yes, all I needed are just 2 RF inputs + 3-4 RF outputs in a linear amplifier.  I trust it is just a common design in most of the reputable amplfiers.  Since the design of KPA500 + KAT500 is not in one box, I suppose the forthcoming KAT500 will cover this issue. 
 
The design of KAT500 should not only couple with KPA500 but also other radios / amplifiers in a smooth manner.  It is just a business sense to do so.  Elecraft will just be more happy if other non K3 radio owners also buy the KPA500 and KAT500.

TNX & 73,


Johnny VR2XMC

 
從︰ Gary Gregory <garyvk4fd at gmail.com>
收件人︰ Johnny Siu <vr2xmc at yahoo.com.hk>
副本(CC)︰ "RLVZ at aol.com" <RLVZ at aol.com>; "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
傳送日期︰ 2011年07月11日 (週一) 3:16 PM
主題︰ Re: [Elecraft] ] KPA500 Multiple Antenna Option


Sorry to say this but when is enough, enough?....the KPA-500 will come in both desktop and remote versions, it will have balanced AND unbalanced antenna connections...I now wonder when someone will ask for 10 of each?

To simply keep adding numerical options drive the price up for all customers. I certainly don't require more than 4 antennas but I appreciate some folks have 10 or more to play with and several radio to boot. 

But they are NOT the vast majority of Elecraft customers I would guess.

I think a search of the archives may reveal that the KAT-500 will have 3 antenna connections and one is for single wire or open wire feedline. I am going from memory and we all know how dangerous that can be...:-) 

One other comment I would make is that IF I had a Quadra I cannot think why I would buy a KPA-500....unles it does not do 6M maybe?...not sure what Yucksu provide...:-)

73's 
Gary


On 11 July 2011 15:58, Johnny Siu <vr2xmc at yahoo.com.hk> wrote:

Hello Dick,
> 
>I think it is very common that many of us have more than one radio and one antenna.  Multiple antenna output and input sockets are just a logical customer's wish.
> 
>I hope the forthcoming KAT500 will address this issue.  Otherwise, I am afraid I have to go for the others such as SPE
>
>TNX & 73,
>
>
>Johnny VR2XMC
>
>從︰ "RLVZ at aol.com" <RLVZ at aol.com>
>收件人︰ elecraft at mailman.qth.net
>傳送日期︰ 2011年07月11日 (週一) 12:55 PM
>主題︰ [Elecraft] KPA500 Multiple Antenna Option
>
>I'd love to see the KPA500 companion Antenna Tuner have a minimum  of 5
>antenna outputs which can be controlled automatically via  the K3.  This is the
>only way I'd purchase a KPA500 as otherwise I'll  keep my Quadra which does
>automatic bandswitching nicely with the  K3.
>
>73,
>Dick- K9OM
>
>
>
>
>In a message dated 7/10/2011 10:53:16 P.M. Central Daylight Time, 
>elecraft-request at mailman.qth.net writes:
>
>I am not  familiar with the various outboard devices to which you refer (as
>have  never needed them).  I am not suggesting that the KPA500 needs 
>additional antenna outputs though that is one way to do it.  That  would
>constritute an internal antenna switch.  The KPA500 represents  many
>upgrades
>from my 1980's amplifier so I am surprised that my 80's amp  has a
>capability
>that the KPA500 doesn't.
>
>The band data information  from the K3 goes to the KPA500 to tell it what
>band it is to be on.   Are you saying this can be paralleled safely and
>also
>instruct another  device?  I would think such might not be compatible and a
>risky thing  to do.
>
>In my set up (with an old Yaesu FL-7000) the band data  information from
>the
>K3 goes to the FL7000 to tell it which band to be  on.   The FL7000 then
>associates one of four antenna positions  with a band, this is changeable
>at
>any time and then remembered, and  outputs relay control to a remote
>antenna
>switch.  If the remote  switch is not in use, the "antenna" which is
>associated by band is  irrelevant.  I am surprised that the KPA500 does not
>have this  capability standard and built in with the outboard remote
>antenna
>relay  being an option.  Without this, band changing is not, in fact, 
>automatic.
>
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