[Elecraft] K3 to KAT500

[tom armour]

ThanksGreat input so far!It is really helping me finalize my decision. 

A few more notes/questions:I have an old tube amp (fl-2100) that does about 600w max I intend to use until I get the money together for a KPA500.
I currently use a manual tuner that I could potentially put in line if I want to run QRP.I do not intend to move the K3 a lot.  I have another radio I can use portable.

With the old amp should I have an AUX cable?  or is the RCA cables Rig->KAT500->Amp enough?
73 - Tom - wa4ta
> Date: Sat, 25 Jan 2014 09:27:07 +0800
> From: vr2xmc at yahoo.com.hk
> To: elecraft at mailman.qth.net
> Subject: [Elecraft]  K3 to KAT500
> 
> Apart from Jim's advice below, I would supplement as follows:
> 
> 1.  If you have no intention to take K3 as portable use or your K3 is a station rig, I would go for KAT500.  This will give you the future liberty of buying a KPA500 or other linear amplifier.
> 2.  Once you have a linear, the internal KAT3 tuner will become redundant.  In fact, I sold the KAT3 to subsidize the purchase of KAT500.  I am using KX3 for portable use.
> 
> 73
> 
> Johnny VR2XMC
>  
> 
> ________________________________
>  寄件人︰ Jim Brown <jim at audiosystemsgroup.com>
> 收件人︰ elecraft at mailman.qth.net 
> 傳送日期︰ 2014年01月25日 (週六) 8:04 AM
> 主題︰ Re: [Elecraft] K3 to KAT500
>   
> 
> On 1/24/2014 3:52 PM, tom armour wrote:
> > If I buy a K3/100 without auto tuner and a KAT500 is there any additional cable I need (other than coax) to connect the two together?
> 
> Some folks feel the need for an AUX cable to tell the KAT500 what band 
> it is on. I don't, because the KAT500 has a very fast frequency counter 
> that can figure that out with a short burst of RF.
> 
> > or does KAT500 come with all cable beeded to connect it to the K3?
> 
> Yes.
> >   I see a cable for KAT500 to KPA500 but not to the K3.
> 
> Yes. To prevent damage to its relays, the KAT500 must be able to 
> interrupt the keying line to any power amp that is used.  It has an RCA 
> input, and an RCA output. So ONLY if you're running an amp, you need an 
> RCA-RCA between rig and KAT500, and another between KAT500 and power amp 
> PTT.
> 
> > Is there anything I'll be missing with the KAT500 vs the internal tuner other than portability?
> 
> QRP autotune  -- the KAT500 is optimized for high power, and doesn't 
> autotune very well below about 10W.
> 
> 73, Jim K9YC
> 
> 
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