[Elecraft] K2 and HW-101?

Wed Jan 16 07:34:00 2002

The schematic shows that the RF voltage at the grids should be about 45
volts.  The plate voltage is 800 V.

Another possibility is to drive the 6CL6 driver, rather than the final.
However, I discovered that it is physically much more difficult to get in
there with a mod.

Vic's idea about the 200 ohm resistor would probably work without a matching
transformer if the K2 has the ATU, no?

If the K160M is installed, the HW-101's built-in antenna relay could be
utilitized, controlled by the keying output from the KIO2.  I think it would
be very similar to hooking up a "category II" transverter to the K2.  (But
not exactly QSK!)

----- Original Message -----
From: "Vic Rosenthal" <[email protected]>
To: <[email protected]>
Sent: Wednesday, January 16, 2002 1:30 AM
Subject: Re: [Elecraft] K2 and HW-101?

[email protected] wrote:
>
> In a message dated 1/15/02 8:37:39 PM Eastern Standard Time,
> [email protected] writes:
>
> > The K2 should provide more than enough
> >  voltage swing across it to drive a pair of 6146's to full output.
>
> 12.5 watts across 50 ohms is only about 25 volts. 6146s need more than
that.

Looking at my ancient Bill Orr handbook, I suppose about 50-75v, depending
on
the plate voltage.  Well, you could just use a 1-4 toroidal transformer
between
the input and a 200 ohm swamping resistor.

73,
Vic, K2VCO
Fresno CA

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