[Elecraft] Re: K2 amplifier keying circuit PCB?

[Tom Hammond]

Hi Mike:

>I happened to find the K2 amplifier keying circuit
>partial mod kit on Elecraft's site.  The write up
>mentions, at the  bottom, that you might be putting
>together a small PCB for this circuit.  Do you have
>any of the PCB's available for sale?  If so, can you
>email me the details?

I'm replying to you directly AND via the because I've received several 
recent similar queries from Elecraft reflector members as well.

That article on the Elecraft web site really needs to be REMOVED because 
it's no longer accurate. I wrote it WAY BACK before Wayne came up with the 
8R line T-R keying feature for the K2. It used a different keying line 
which did NOT pre-key the T-R line and which would not be nearly as 
satisfactory as using the 8R line keying.

I never got into making the PC boards available... the 8r Line keying 
became available soon after I posted my original article and one of the 
reflector members had a small run of keying boards made up to use the 8R 
line, so I put my article on hold at that time.

I believe that Elecraft MIGHT be offering a set of parts (only, no PC 
board) to allow you to connect to the 8R line in a 'basic' K2, to provide 
amplifier T-R keying, but it's neither an 'official' Elecraft mod, nor an 
'official' Elecraft kit. And... I may be way off base here... they may 
offer nothing along this line. I've sent a couple other folks to Elecraft 
with this request and no one has ever replied to me that they did or did 
not obtain what they needed from Elecraft.

Someone really needs to come up with a stand-alone T-R line keying 
circuit,using the basic K2. I should have done it long ago, but figgered 
someone else would do it. I KNOW there are a number of folks using such a 
device.

73,

Tom   N0SS