[Elecraft] 40M Tx Alignment Hi Current Concerns

Dave [email protected]
Mon Jan 13 12:36:01 2003


Gil

Don't forget that "tune" on later firmware reduces the power to approx 3
Watts. Have you tried a Morse key?

Dave, G4AON
K2 #1892
----- Original Message -----
From: "Gil Stacy" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Sunday, January 12, 2003 10:44 PM
Subject: Re: [Elecraft] 40M Tx Alignment Hi Current Concerns


>
> Don,
>
> The power source may have been part of the problem..  I had been using a
2.9AH gel cell (12.4 volt charge) and a power cord that came with an SWL 40
kit.  I just hooked up a RS 13.8 3A power supply with some power cord from
RS for DC use.  Paired cord with postive marked with white stripe.   May not
have been quite 18 guage, but close.  With power up to the radio, rx on, the
power supply at the connectors read 13.78 volts with a DVM.  At the LCD on
the radio, the voltage was 13.1 with the RX on at 7100.  With a setting of 5
watts on receive, the LC D read 13.1 with a drain of .22.  The DVM read
13.78.   In TUNE mode, the first time I tested, the voltage dropped to 12.4
with a drain of 1.4 amps. Happy dance.  Ten minutes later, 1.8 drain.  DVM
read 13.69 or a drop of 0.09 at the connectors.    The set had been turned
off.  On 10 watts, LCD read 13.1 voltage, with a drain of .22.  DVM read
13.78 at the connectors.  In TUNE mode, voltage drop on LCD read 12.2 with a
drain of 2.4 amps.  DVM at the connectors showed 13.65 or a DVM drop of .13
volts.  Would it still be the power cord??  I can always cut some lamp cord
when no one is looking. Thanks
> 73/Gil