On Apr 15, 7:47 am, "Edward Feustel" wrote:
"billcalley" wrote in message

ups.com...



Hi All,

I have a Kenwood TS-530S, but I'm sure this question applies to
most other tube rigs: Why is there even a TUNE setting on the MODE
switch? I know that with this switch engaged the "input power to the
final section is reduced to prevent tube damage during tune-up", but
why not just adjust CAR (CAR LEVEL CONTROL) downward for this step,
since CAR also controls "carrier level during CW operation". Is it
simply a matter of convenience, or do these controls actually do
somewhat different things?

And while I'm on that subject of carrier level, I need to lower my
100 watts to about 10 watts. Is the best way to do this by simply
lowering the CAR control? Does this technique give all the
advantages, such as more protection to the finals (with a high VSWR)
and generally longer tube life?

Another quick question for anyone who is familiar with the Kenwood
TS-530S with the 500Hz CW filter installed, but I noticed that unless
I move IF-SHIFT counter-clockwise, the audio output is not centered on
800 Hz, but more like 1200 Hz or so. Is this normal for Kenwoods?

Thanks for any help!

-Bill

Bill,
Do you have the correct CW filter installed?
Kenwood offered the C filter and the C-1 filter.
The difference is the center frequency.

I remember on my 930, there was a pitch control.
Do you have one? If so, how is it set?
73,
Ed, N5EI- Hide quoted text -

- Show quoted text -

Hi Ed,

Thanks for the response! Yes, I have the proper YK-88C filter
installed. And it is not the actual CW pitch/tone that's off, but the
filtered passband output into the rig's speakers. The audio output,
unless the IF-SHIFT control is moved counter-clockwise to center it,
has the CW signal at 800Hz, as it should be, but the 500Hz passband
itself is not centered on it and extends too high from about 800 Hz to
1300 Hz...

Best Regards,

-Bill