On Apr 15, 12:56 pm, jim wrote:
hi bill,

join other ts-5xx/8xx hybrid fans here

http://groups.yahoo.com/group/TS-520_820_530_830/

When in tune the power level is reduced to under 2 watts.

if you want to lower your power out the car control will do
this only for CW mode. If you want to use reduced power for SSB,
in the files section in the above yahoo group there is a small
external circuit that will use ALC to lower the power out.

73 jim



billcalley wrote:

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- Hide quoted text -

- Show quoted text -


Thanks Jim -- sounds like a great site. I'll take a look!

Best Regards,

-Bill

billcalley wrote:
jim wrote:
hi bill,

join other ts-5xx/8xx hybrid fans here

http://groups.yahoo.com/group/TS-520_820_530_830/

When in tune the power level is reduced to under 2 watts.

if you want to lower your power out the car control will do
this only for CW mode. If you want to use reduced power for SSB,
in the files section in the above yahoo group there is a small
external circuit that will use ALC to lower the power out.

73 jim

billcalley wrote:

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-

Thanks Jim -- sounds like a great site. I'll take a look!

Best Regards,

-Bill

Hi Bill,
The carrier oscillator frequency used for CW(Rx) is the same as for USB.
Because you want to have 800Hz difference between RX & TX, it would be best
to just ensure the carrier oscillator frequencies are correct (and adjust as
necessary). My TS120 & TS130 (same IF & filters) use:

USB = 8.8315 MHz
LSB = 8.8285 MHz
CW (Rx) = 8.8315 MHz
CW (Tx) = 8.8307 MHz

By the way, I have the narrow (270Hz) CW filters in my rigs. They're VERY
sharp!

Vy 73,
Bryan WA7PRC