[Elecraft] New K2 Options

[email protected] [email protected]
Sat May 3 09:47:03 2003


Hi, Ed,

Ed, K6SDW wrote:

"I'm more curious about ur AGC findings then I am about the new
products!!!"
==========
Eric agreed with me that the voltage on U2-5 is still too high, causing
the AGC voltage at the output of U2-1 to be too high, even with no
antenna connected.  The remedy is to decrease the value of R1 even more
than I already have (originally 51k, now ~33k) so that the voltage at
U2-1 is close to what it is when the AGC is turned off when the antenna
is disconnected.

My K2's 8-volt regulator outputs 8.35 volts thereby requiring the
decrease in value of R1 to be even more drastic to achieve the desired
result.  Therefore I have chosen to replace the 8-volt regulator with a
new one (hoping that the new one outputs closer to 8.0 volts) so that the
change in the value of R1 need not be so drastic.

When I replace the regulator and adjust R1 so that I get the desired
output from U2-1, I'll post the results on the Elecraft reflector.

73, de Earl, K6SE