[Elecraft] Barebone K2 Amplifier?

[Doug Person]

A few years ago, after completing my first K2, I had investigated  the 
Tokyo Highpower amplifiers.  I exchanged emails with a salesman at Tokyo 
Highpower and he was very cooperative.  The delivered price of the 100 
watt amp was about $450 shipped from Japan. Considering everything it 
was not a bad price. But then the KPA100 was announced and the choice 
was obvious. BTW my very early KPA100 went together without a hitch and 
worked perfectly on all bands.  I operated mostly SB with it not being 
quite the cw op I am now.

73, Doug -- KØDXV

Joseph Reed wrote:
> Doug, Fred, and all,
>
> I had forgotten about the 405!  But you are also correct Tokyo Highpower makes two models of amplifters, a 50 watt and a 100 watt.  There was also an article in QST in the last year or two that described the type of amp Fred was looking for.
>
> Fred(FL)  don't forget to check E-Bay as they frequently show up.  Also subscribe to the FT-817 list on groups.yahoo.com as they are often listed.  And a search of the archives will give you information on how (and whom) to contact at the factory.
>
> Yet I concur with the majority,  the KPA-100 is a nicer solution, and coupled with the KAT-100 it makes for a very sweet radio.  My configuration is a K-2 with all the trimmings in QRP mode, and a KPA-100/KAT-100 in an EC-2 enclosure.  It affords the best of both worlds, unplug it and it is the best QRP radio of all time, and bring it back in and you have a very good 100 watt radio.
>
> If only the firmware could determine when it was connected to the KPA-100/KAT-100 or not and return control to the KAT-2.  (Sorry Wayne <g>.)
>
> I dont think the KPA-100 is more expensive than a Tokyo amp either.  
>
> 73,
> Joe N9JR
>
> ----- Original Message ----
> From: Doug Person <Doug at Northroutt.net>
> To: Fred (FL) <ncsailors at yahoo.com>
> Cc: elecraft at mailman.qth.net
> Sent: Thursday, December 7, 2006 4:36:15 PM
> Subject: Re: [Elecraft] Barebone K2 Amplifier?
>
>
> Long ago Ten-Tec made a model 405 amplifier.  It could take 5 watts in 
> and produce 50 watts out.  There are also some Tokyo Highpower amps 
> around that people have bought directly from Japan.  You could also 
> arrange to buy one directly from the company.  They technically aren't 
> legal because the FCC has restrictions on input power, bands and gain to 
> (unsuccessfully) prevent CB operators from running more than 4 watts 
> output.  Otherwise, there are plans and boards to build a 140 watt amp 
> that would be quite suitable.  I also believe it is possible to make the 
> KPA100 an external amplifier.  I've used a number of these and in my 
> book if you want 100 watts - buy the KPA100.  I built one of the first 
> and it was a gem.
>
> 73, Doug -- KØDXV
>
>
>