[ARC5] SCR-274N Update

[Bill Cromwell]

On 09/26/2013 01:29 PM, Mark K3MSB wrote:
> Both the 40 and 80M transmitters have a slight chirp which doesn’t bother
> me in the least.
>
> The stability and tone on the 80M transmitter are fine, but the 40M
> transmitter drifts and the tone is about T8, maybe T7.  The drift is
> noticeable as I sometimes have to slightly retune during a transmission.
>
> The power supply for both transmitters is the same.  It’s a hefty 28V power
> transformer with a full wave bridge rectifier and a 38000 uF cap (with
> bleeder) as the filter.  The HV/OSC/Screen supply is completely separate.
>
> 73 Mark K3MSB
>
Hi Mark,

A slight amount of chirp gives a signal some "character". On a busy 
contest weekend when the bands are filled wall to wall with sterile, 
computer generated code a fist and some "character" stands out better 
than any sliver-slicing filter. Large amounts of 'drift' that take a 
transmitter out of the distant receiver's passband (and onto a different 
QSO in progress) is a problem. Good to get rid of *that*.

73,

Bill  KU8H